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5-19

VIBXPER

T II 05.2012

Measurement tasks

Cepstrum analysis

A cepstrum is the 'spectrum of a spectrum' and is particularly suitable

for detecting regular structures in a frequency spectrum. Above all,

in the case of complex patterns with many harmonics and sidebands

- that frequently occur if roller bearings or gearings are damaged- a

cepstrum simplifies the evaluation of the measurement data.

User-defined measurement quantities

As well as measurement tasks with fixed specified measurement quan-

tities, VIB XPERT provides measurement tasks where the measure-

ment quantities can be freely defined. The voltage (±30V, AC/DC) or

current (±30mA, AC/DC) can be connected as an input signal and

recorded as an overall value, as a time waveform* or as a spectrum*.

The assignment of the input signal to the measurement quantity is

specified by the 'Measurement quantity' and 'Unit' parameters in the

transducer setup (see P. 2-20).
Examples of user-defined measurement quantities:

- Measurement of the pressure as a current level (4-20mA, DC).

Connection to pressure transmitter.

- Measurement of the flow rate as a current or voltage signal (4-

20mA / 0-10V, DC). Connection to flow rate measuring device.

- Measurement of the sound pressure as a time signal or spectrum.

Connection to a microphone.

- Displacement measurement (inductive sensor VIB 6.640).

Only the following cables can be used as sensor cables:

VIB 5.433 - Connection cable for low voltage signals

VIB 5.434 - Connection cable for low current signals

AC overall

DC overall

Sensor parameters for
sound pressure measurement

VIB 5.433 /
VIB 5.434

Pressure

Flow rate

Attention!

AC time

AC Spectrum

waveform

* DC measurement for time waveform,
spectrum, see page 5-30.

Cepstrum

Содержание VIBXPERT II

Страница 1: ...e that you are happy with our product If you have any suggestions for improving this product or this instruction manual please let us know PRÜFTECHNIK Condition Monitoring Fax 49 89 99616 300 eMail info pruftechnik com Edition May 2012 Order no LIT 53 201 EN Translation of the original manual german Series VIB 5 310 Firmware version 3 2x ...

Страница 2: ...nt measurement tasks within the scope of acceptance or service measurements Almost every type of sensor can be connected One or two measurement channels analog Upgrade to 2 channel device at any time via password Hardware Two synchronous measurement channels for diagnosis of complex measurements e g shaft vibration Unlimited storage capacity Standard 2 GB CompactFlash Dustproof and splashproof IP6...

Страница 3: ...harging in VIBXPERT or in external charging sta tion Automatic power management display device Communication Fully networkable PC connection via USB Ethernet RS232 Documentation Printing out of reports directly on paper or as a PDF file VIBXPERT from PRÜFTECHNIK once again demonstrates the com pany s skills and innovative strength in the field of maintenance and is a consistent advancement in the ...

Страница 4: ...accessible to a third party in any form neither in its entirety nor as an excerpt No liability may be claimed against the publisher regarding the product described in this manual The publisher assumes no liability for accuracy of the manual contents Furthermore under no circumstances may the publisher be held liable for direct or indirect damage of any kind resulting from use of the product or the...

Страница 5: ... 13 Route 2 14 Transducers 2 19 Language 2 23 Registration 2 24 Units 2 24 Key controls 2 25 Printer 2 26 Analog out headphones 2 28 Service menu 2 29 Memory card CF 2 31 Standardization factor for dB scaling 2 31 Deleting files 2 31 Data transfer 2 32 Direct connection to PC 2 32 Network connection 2 33 USB pen drive 2 33 Setting up the network communication 2 34 IP address of the local PC in the...

Страница 6: ...8 Ending the measurement recording 3 39 Special cases 3 39 Time waveform recorder 3 40 Data acquisition at the VIBRONET multiplexer 3 41 Connecting the VIBXPERT to the multiplexer 3 42 Automatic data acquisition 3 43 Manual data acquisition 3 43 Diagnostic measurement at VIBRONET multiplexer 3 44 Diagnostic measurement 3 44 Chapter 4 Results 4 1 Evaluating results 4 2 Result details 4 2 Characteri...

Страница 7: ...ditor 6 1 Text Editor 6 2 File Manager 6 3 Functions of the MENU key 6 3 Printing out the PDF file 6 4 Transferring a PDF file on a USB pendrive 6 4 VIBXPERT utility 6 5 Installing and starting the program 6 5 Registering optional functions 6 6 Setting up a connection with VIBXPERT 6 7 Configuring VIBXPERT 6 7 Transferring files 6 8 Transferring system files 6 8 VIBCODE 6 10 Mechanical coding 6 10...

Страница 8: ...ration LIT 01 800 CD ROM Condition Monitoring catalogs brochures magazines VIB 8 970 Condition Monitoring software firmware CD includes OMNITREND demo version VIB 5 310 1 Advanced package 1 channel device includes all parts of the Data collector package plus Not shown VIB 5 311 Firmware certificate 1 channel instead of VIB 5 318 E VIB 5 310 2 Advanced package 2 channel device includes all parts of...

Страница 9: ... 436 The packages for the 2 channel device additionally include Advanced package 2 channel device additional content VIB 5 310 2 The packages with OMNITREND PC software additionally include VIB9 631 G VIB8 981 Data collector package OMNITREND 1 channel device additional content VIB 5 314 1E VIB5 320 INT VIB3 420 VIB6 142R VIB5 330SUSB VIB5 436 VIB5 310 VIB5 356 VIB5 325 VIB5 328 VIB8 970 LIT 01 80...

Страница 10: ... may only be used for the measurement of machine signals in industrial environments while taking into con sideration the technical specifications see Appendix Technical data Transducers and cables may be used only for their respective in tended uses as defined in the corresponding sales leaflets Any other use shall not be considered an intended use and is imper missible Incorrect or impermissible ...

Страница 11: ...ginal spare parts and accessories may be used Only properly functioning regularly maintained electrical equipment may be used Any defects such as broken plugs or loose sockets must be corrected immediately Damaged cables must be replaced by an authorized service technician Any alterations that affect device design or operating safety are not permitted Environmental influences Portable radio based ...

Страница 12: ...ns and the contents of the device nameplate and the battery nameplate standard version Nameplate for the VIBXPERT device with serial number S No Nameplate for the rechargeable battery with with serial number and safety notes Safety and operating notes 00100 VIB 5 310 00100 ...

Страница 13: ...or Trigger RPM sensor Data transfer via RS 232 Headphone Oscilloscope Strobe control 1 Full color display large backlit high contrast 2 Ambient light sensor con trols keyboard illumination 3 4 1 2 5 6 7 7 Additional key with ENTER function Rear panel 6 Rechargeable battery built in replaceable 5 Memory card built in 2 MB replaceable 4 Keyboard ergonomic backlit 3 Four LEDs indicate Alarm condition...

Страница 14: ...sensitive help page in the active language 7 ESC key is used to cancle an operation to page back and to switch off VIBXPERT only in the start screen BLUE GREEN YELLOW RED 2 3 4 6 7 5 1 LED RED YELLOW GREEN BLUE constant Alarm Warning Prewarning Meas OK flashing slow Signal Signal Display off Battery overload unstable Meas incomplete almost empty flashing fast Battery Trigger signal empty constant ...

Страница 15: ... key for approx 5 seconds until the device switches off and restarts Navigation and editing Select the screen elements with the cursor which can be moved by the navigation keys The selected element is highlighted To confirm the selection press the Enter key Some examples of navigation and editing are shown below Fields Black frame Measurement channel field is selected Grey frame Selection confirme...

Страница 16: ...with the MENU key and hidden again with the ESC key An arrow next to a menu entry indicates a further submenu To open it press the right navigation key Help Tips and operating instructions are available for every screen in the program Call up these help pages at any time by pressing the HELP key and close them by pressing the HELP key again ...

Страница 17: ...th A and B are used as the Input for analog signals Charging socket for the battery A or B The sensor cable is connected to the channel A or B set in the mea surement task The analog measurement channels are not electrically insulated For 2 channel measurement on two machines check the potential equalization VDE 0100 or use electrically insulated sensors Top view Attention Getting started Interfac...

Страница 18: ... 2 5V rising min 0 6V falling Switching threshold negative min 8V rising max 10V falling The input signal must not exceed the switching threshold of the positive and negative range as otherwise incorrect measurements can occur Temperature This interface is used for the connection of a thermo couple type K Communication The green channel is used as the Communication interface to the PC The connecti...

Страница 19: ...uring but elec trical interference can lead to faulty measurements under certain circumstances Battery icon Residual charge 100 Residual charge 25 Battery is being charged Battery almost empty If the battery is almost empty a message appears on the display and the blue LED flashes The battery can be charged either in the device or in the external charging station option VIB 5 324 using the VIBX PE...

Страница 20: ...row it in the fire Do not short circuit connection contacts Maximum charge temperature 40 C Dispose of used batteries properly in accordance with regula tions P 6 17 Getting started Power supply Charging in the external charging station To remove the battery loosen both screws on the back The metal contacts on the battery in the charging station and in the device should be protected against contam...

Страница 21: ...rement device A belt and a hand strap can be attached to the pouch Belt Fasten the belt to the two diagonally opposite eyelets Adjust the belt length so that the measurement device hangs comfortably from the shoulder to allow convenient operation Hand strap The hand strap can be attached on the right or left side To ensure a stable grip put one hand in the strap VIBCODE ...

Страница 22: ... adhesive NOVASIL S 11 to ensure the dust seal IP 65 Replacing the memory card Switch off VIBXPERT Carefully remove the cover in the grip Make sure that the clip of the cover is not damaged Pull out the memory card by the adhesive strip Getting started Memory card Installation Insert the new card in the guide rails of the card slot Carefully press in the card up to the endstop Make sure the card i...

Страница 23: ...XPERT you are prompted to format the card The card has already been used in another VIBXPERT Card version firmware version in the device the files on the card are automatically updated Card version firmware version in the device you are prompted to reset all settings to the factory settings Reset P 2 29 Card version latest firmware version no action Card faulty The file system on the card is damag...

Страница 24: ...Click on Date Time Click in the Time window and select the numerals for the hours minutes or seconds To change the numeric value press the navigation key up or down When finished click on the Enter key to leave the Time window Select the Time format HH mm ss 24 h hh mm ssAP 12 h The date is set in the same way Select the appropriate Date for mat Other parameters Time zone Time shift to GMT Greenwi...

Страница 25: ...y The automatic switch off is disabled in the measurement screen results screen Show battery charge Display the residual battery charge in percent Spectrum Show lines below lower frequency fmin In spectra with a lower limit frequency of fmin 0 Hz the lines between 0 Hz and fmin are displayed in the diagram if this option is enabled Hide calibration hint The message for overdue calibration is not s...

Страница 26: ...te display type The route machine template can be displayed in the hierarchical tree view or as a list Tree In this view the measurement locations and the higher level hierarchies are displayed as a tree structure as they are in OMNI TREND The measurement locations are processed in the defined order List The list view shows the measurement locations in the order in which they are processed If the ...

Страница 27: ...hierarchy levels are hidden in the tree Disabled Measured skipped hierarchy levels are displayed in the tree Jump to next unmeasured measurement location Here you can define to which measurement location the cursor should jump after you view a stored result and close the measurement task selection window Activated the cursor jumps to the next unmeasured measurement location Disabled the cursor rem...

Страница 28: ... automatically as soon as a mul tiplexer measurement location is opened in the selection screen Deactivated The measurements have to be started with Enter Route optimizer This function optimizes the processing of the route and shortens the time involved in collecting the measurement data Enabled Measurement tasks for a measurement location with the same sensor are processed one after the other Dis...

Страница 29: ...Prior to every measurement VIB XPERT checks whether the correct sensor is connected and if the cable is OK A sensor icon appears at the upper edge of the screen next to the battery icon When measurements are taken with the VIBCODE sensor sensor detection is always active Disable hardware settling This shortens the duration of the entire measurement Enabled Amplifiers do not settle before measureme...

Страница 30: ...n lights up orange Use the standard sensor for measuring or deactivate this option Otherwise incorrect measurements may be the result Save settings Click on Saving to set up the following options AutoSave This shortens the duration of the entire measurement Enabled The selected time 0 10s corresponds to the waiting time until the result is automatically saved Disabled The result must be manually s...

Страница 31: ...nces this list can be very extensive Preselecting available transducers As it is probable that not all the transducers stored in VIBXPERT will be used the choice can be restricted to those transducers that are available to the user When setting up the measurement tasks VIBXPERT only offers the choice of the preselected transducers as standard Click on each of the relevant transducers in the list s...

Страница 32: ...cement current RPM jump user defined quantity Signal type Signal type of the sensor e g LineDrive ICP voltage Input voltage range 3V 8V1 30V only applies for transducers of Voltage Cur rent ext 5V converter and VIBREX VIBRONET signal types Quantity user def Identification for a user defined measurement variable Unit user def Unit for the user defined variable Precision Accuracy in decimal places C...

Страница 33: ... transducers only User Display user configured transducers only Available Display preselected transducers as available only Meas quantity Display the transducers for a specific measurement quantity only the measurement quantity is selected in the associated submenu see below Setting up new transducers To set up a new transducer proceed as follows In the transducer list press the MENU key Click on ...

Страница 34: ...Sensor test Here you can manually check the measurement path to the sensor For ICP sensors use the ICP Sensor Test menu for all other sensors use the Sensor Test menu Select the channel to which the sensor is connected A B Click on START VIBXPERT then checks the measurement path and displays the re sult LineDrive Open line Short circuit etc Default vibration sensor Multimode A default sensor can b...

Страница 35: ... limit set for rpm measurements and phase measurement to enable measurements on very low speed ma chines range 10 30 s default 10 s In coast down measurements the time limit is automatically set in relation to the stop speed The Active edge option is used to define whether the edge of the incoming trigger mark or outgoing trigger mark on the shaft is to be used as the reference signal Language VIB...

Страница 36: ... PC license Before VIBXPERT can exchange data with OMNITREND the device must be registered in OMNITREND This is generally performed by entering the PC license password in OMNITREND Here you can enter the password in VIBXPERT The password is then automatically read into OMNITREND when VIBXPERT first makes contact with OMNITREND Units The units where appropriate are set to SI units in the factory To...

Страница 37: ... for starting a measure ment This key is particularly useful if it is not possible to press the Enter key e g if a hand held probe must be held on the machine with the right hand Save prompt after ESC The Save prompt appears if you press the ESC key without having saved the changes measurement results in the current screen before hand This query always appears for run up and coast down measure men...

Страница 38: ...ter a name in the text editor Then set the print parameters Resolution paper format and depending on the printer type the color model and paper source Check the print function by printing a test page Connect VIBXPERT to the printer see the next page Press the MENU key and click on Test page The test page is printed as soon as the print job has been processed by VIBXPERT If you select PDF as the pr...

Страница 39: ...ss the MENU key and click on Delete job If a print job is being processed a print icon appears at the top edge of the screen Connecting the printer Only printers with a USB interface can be connected to VIBXPERT Use the USB cable available as an accessory for I O devices to connect the printer VIB 5 3330 MUSB Print job is being processed VIB 5 330MUSB USB master ...

Страница 40: ...ut at the analog output until the measure ment screen is closed If needed adjust the standard normalization for the accelerometer You can choose from 10mV g 100mV g 500mV g 1mV ms A maximum output voltage of 4V provides the maximum pos sible measurement range for example of 80 m s2 at 500mV g 400 m s at 100mV g If the vibration signal is measured with a different sensor type set a suitable gain fa...

Страница 41: ...ause an offset in the analog electronics This option makes it possible to maintain the measurement accuracy of the instrument by regularly approximately every 2 months compensating the offset Click on Offset Compensation Click on Start in the next screen The process takes about 3 min utes Factory Defaults This menu can be used to reset various settings in the instrument to the values set up in the...

Страница 42: ...top Demo mode LogLevel To simplify troubleshooting the operating steps can be logged in the device and written to a log file This menu is used to set how much data is to be written to the log file LogLevel Click on the LogLevel icon Select one of the following options None No logging Default Only the most important operating steps are logged Runtime Special use The amount of logged information is ...

Страница 43: ...on the Start button Repairing If the file system on the memory card is faulty an error mes sage appears If possible save the measurement data on the PC before starting the repair function Standardization factor for dB scaling The amplitude of a spectrum is converted to decibels dB with the following formula Alog 20 log Alin N where Alog amplitude in dB Alin amplitude in linear unit N standardizati...

Страница 44: ...lso PDF files can be saved to a USB pen drive so they can be opened and printed from a PC Exchanging data between the measuring device and a PC requires either a direct connection or a network connection Direct connection to PC Serial connection Connect the PC cable VIB 5 430 2 to the digital port yellow and serial port of the computer USB connection Connect the USB cable VIB 5 330SUSB to the com ...

Страница 45: ...rk connection LAN Connect the Ethernet cable VIB 5 331 to the communication port green and network socket LAN VIB 5 331 Ethernet Network LAN USB pen drive To save PDF files to a USB pen drive you need the following acces sories Connecting adapter for USB pen drives VIB 5 330 MEM USB pen drive for VIBXPERT II VIB 5 330 USB In the file manager the USB flash drive is shown as an additional di rectory...

Страница 46: ...for VIBXPERT Take the first three numbers of your PC s IP address and change the last number only see also the following instructions Make sure that the IP address for VIBXPERT is not already allocated in the network Contact your system administrator if you work in a company network In the Subnetmask field enter the address of the subnetwork where the PC is located If necessary enter the address o...

Страница 47: ... of the PC are not known ask your network administrator or find it yourself on the PC Open the DOS box on your PC Click on Start and then on Execute Enter cmd under Windows 2000 XP Enter ipconfig all in the DOS box DOS box Example The screen displays the IP ad dress and the subnet mask of a PC in a network IP address 172 17 5 59 Subnet mask 255 255 0 0 ...

Страница 48: ... computer if you connect the computer directly to the measurement device with a patch cable From the Start menu select Settings choose Network and Dial Up Connections Right click on Local Area Connection and select Proper ties Select TCP IP and click Properties Select Use the following IP address Enter the IP address data for the local PC ...

Страница 49: ...easurement data in VIBXPERT to the OMNITREND database connect the VIBXPERT to the mains supply Otherwise the up date procedure will not start Install the VIBXPERT update tool on the PC The program is avail able on the PRÜFTECHNIK Condition Monitoring CD Connect VIBXPERT to the network the PC Switch on VIBXPERT Start the VIBXPERT update tool on the PC and click on Next to call up Step 2 Set the Com...

Страница 50: ...n number e g VXP2_300_ build638 ptz and the extension ptz Click on Next In the next step 4 click on Download to start the data trans fer to VIBXPERT After the data transfer has finished click on Close to close the program The device switches itself on and off repeatedly until the update is completed This process generally takes a few minutes Wait for the VIBXPERT start screen to appear The version...

Страница 51: ...ons or acceptance measurements on site at the machine manufacturer s Routes and machine templates are created in the OMNITREND PC software the results are read into the OMNITREND PC software for evalua tion and archiving purposes Balancing VIBXPERT can be used for dynamic balancing in one or two planes Preparation Before beginning a measurement ensure that the battery is fully charged the device s...

Страница 52: ...g modes VIB XPERT receives the measurement tasks directly from the OMNITREND PC software Only a few of the measurement parameters here can be changed transducer measurement channel RPM entry The following overview shows the structure of a measurement task in VIBXPERT Measurement quantity Vibration acceleration Vibration velocity Vibration displacement as overall value time signal or spectrum respe...

Страница 53: ...lready been made A schematic of the workflow of a measurement is shown below The setting options that are available before during and after a mea surement are described in the following section The evaluation of the results on the instrument is described in Chapter 4 Starting a measurement Highlight the measurement icon in the selection screen Connect the sensor Sensor and measurement channel are ...

Страница 54: ...The live mode is activated in the Display Setup see p 4 17 The actual data collection begins when you press Enter again Alternatively you can activate the live mode by keeping the Enter key pressed when the measurement starts The actual data collection begins when you release the Enter key Measurement progress is indicated by a bar at the top edge of the screen In the live mode the Live symbol app...

Страница 55: ...point in time It is possible to skip individual elements in the route if an aggregate is not in operation for example The skipped mea surement tasks are counted as processed When the route has been processed it can be transferred into the OMNITREND database for evaluation and in order to archive the results on the PC The following diagram shows the typical workflow of a route Sequence of a route m...

Страница 56: ...er If no adaptive trigger is defined the diagnosis measurement is triggered when the lowest threshold value is exceeded Visual inspection A visual inspection task includes all types of data gathering that are based on defined conditions of a machine and that cannot be mea sured with electrical signals For example the degree of contamina tion of an aggregate the belt tension on a drive or the fill ...

Страница 57: ...ilable in the data collector are displayed in the route list see below The right column Completed specifies the num ber of measured locations total measurement locations for each route The lower info field shows for the selected route the date and time when it was loaded into the data collector and when it was mea sured last Click on the route you wish to measure The route is displayed either as a...

Страница 58: ...e measure ment location database Standard sensor is active when the sensor icon at the top left is or ange and the sensor type in the info field is marked red The sensor setup is overwritten with the standard sensor p 3 3 Reference measurements must be carried out first e g RPM mea surement for the normalization of a bearing measurement Various route options shorten the measurement times Depending...

Страница 59: ...Partly not processed Completely processed partly processed and skipped Skipped contains Multimode result contains Event Comment Near location channel A Meas location for triax sensor X axis Result exceeds alarm warning prewarning threshold line speed the production line speed of the aggregate must be entered before starting the measurements Icons Measurement task Status in Tree view Task with stat...

Страница 60: ...All existing results are retained Reset reference rpm The reference rpm of the machine train or the production line speed is reset and can be measured again Break down multitask All the multi measurement tasks that are assigned to the high lighted element are broken down into the individual measurement tasks This procedure is irreversible Break near location The optimized coordination of the measu...

Страница 61: ... perform measurements which are not programmed in the route After the measurement press the ESC key to return to route mode The Multimode results are au tomatically allocated to the element in the route from which the operating mode was changed To display the results select Multimode Results and click on the saved measurement result Device Setup Route Change the basic settings for route mode The c...

Страница 62: ...ment tasks which are automatically carried out for diagnosis if a thresh old value is exceeded This function shows these additional diag nostic measurement tasks Task Manager To check the measurement settings before the measurement call up the Task Manager here The settings cannot be changed Display result The results of a task that has already been carried out can be dis played Either the last re...

Страница 63: ...ications are service measurements or acceptance measurements production tests on site at a machine manufacturer s Machine templates are created with the aid of the OMNITREND PC software Select measurement location navigation via tree view see left list view or machine graphic Enter machine code name serial number The following diagram shows the typical workflow of a measurement Select operating mo...

Страница 64: ...k under different operating conditions within the scope of a production test The remaining measurement tasks are called up manually To create a template for a production test the Production test option must be activated in the OMNITREND template editor see below In the case of templates for production tests the measurement loca tion hierarchy on the machine is only shown in the tree view A list vi...

Страница 65: ...ied out To continue the measurement on a machine click on the corre sponding subordinate machine Click on the template that you want to use for the measurement The Machine description dialog appears where a name for the new machine is specified If you do not want to enter any further information press the MENU key and click on OK to accept the name Otherwise press the MENU key click on Details see...

Страница 66: ...in the Route section Click on the measurement location Select the measurement task and connect the sensor specified in the info field Click on the measurement task to start the measurement Select the next measurement task and start the measurement Once all measurement tasks have been completed the following mes sage appears All measurements on the machine carried out not in the case of templates f...

Страница 67: ...t result can be appended to the result file or can overwrite the latest data in the result file Multimode Press the MENU key after a measurement and click on Save see P 3 4 In the case of a trending file the result is appended to the existing data set select Append see P 3 29 Changing the measurement channel Multimode Highlight the measurement type in the selection screen Press the MENU key and cl...

Страница 68: ...d sensor P 3 17 To save the change press the MENU key and click on OK Route machine template In the tree list view press the MENU key and click on Runtime Setup Route see below Activate the Use default sensor option Select the sensor that is to be used for all vibration measurements on the route in the machine template Do not activate when the route uses the Near location or Triax sensor function ...

Страница 69: ...on screen Press the F key A list appears with all the measurement tasks set up for this measurement type Click on the required measurement task see below Setting up a new measurement task M VIBXPERT has a large selection of frequently used measurement tasks that can be extended by user defined measurement tasks if necessary To configure a new measurement task proceed as follows Highlight the measu...

Страница 70: ...see below Enter a name in the text editor Then set up the Setup parameters Press the MENU key Click on Edit Change the parameters as required see sections A to D on the following pages To save press the MENU key and click on OK How to review the setup parameters Open the Task Manager Select the setup in the respective pulldown menu Press the MENU key and click on Show or Edit In which measurement ...

Страница 71: ... is 0 the total measurement time is number of aver ages x measurement time the higher the overlap the shorter the total measurement time For the runup coastdown curve the number of usable measurements can be increased by selecting a higher overlap Time syhnchronous averaging Phase Orbit In this type of averaging the time signals of each individual rotation are averaged to reduce non synchronous co...

Страница 72: ...ceeded Low pass filter Phase Amplitude Coast down Phase To suppress high frequency noise signals a low pass filter 1 kHz can be activated Yes In a coastdown measurement the low pass filters 1 kHz 10 kHz are set automatically as a function of the start and stop speeds With No the signal is processed without a low pass filter Window Number of lines Impact test The standard window function for the im...

Страница 73: ...ains constant A2 Measurement tasks in the Signals tab Measurement quantity see section A1 Overall values prev page Filter Type Envelope Software Hardware envelope calculation us ing a software algorithm or via a hardware module HP LP Filter Envelope 36 36 kHz 1 40 20 10 5 2 5 kHz hardware filter 0 5 2 5 5 10 20 40 kHz lowpass LP software filter Highpass HP software filter from 100Hz to TP freely a...

Страница 74: ...plitude more precise For precision amplitude analysis of continuous processes Hamming Frequency errors as in Rectangular amplitude errors 18 less than in Rectangular but higher than in Hanning Bartlett Next to Rectangular this is the simplest window trian gle lower amplitude and frequency accuracy Blackman As for Hanning but with higher frequency accuracy amplitude errors as in Kaiser 12 next to K...

Страница 75: ...on A text field ini tially empty appears Press the MENU button and click on Edit Enter the descriptive text in the text editor After terminating the text input and closing the text editor press the MENU button and click on Save D Parameters for RPM measurement The RPM should always only be recorded if RPM synchronous signals appear in the spectrum characteristic frequency needs to be updated or th...

Страница 76: ...he selection is listed in the lower event window Entering a comment In the event editor press the MENU key again and click on Enter comment see below Enter the comment and close the text editor The comment is dis played below the event window Saving To save press the MENU button and click on OK A comment icon appears in the result screen next to the channel name An event comment icon appears in th...

Страница 77: ...nalog output is activated and configured in the device setup see p 2 28 To adjust the sensitivity of the analog output proceed as follows Press the MENU key in the measurement screen Select Analog Out Sensitivity and set the desired sensitivity For 2 channel measurements you can also select the channel whose signal is to be output on the analog output see below Analog signal output Controlling sig...

Страница 78: ... Open the relevant route Select the measurement task for which at least one measurement has already been saved Start the measurement After the measurement confirm the prompt to save which appears Then the following message appears see below Measurement tasks already measured Append The current result is added to the saved data set and ex tends the trend curve see below Overwrite The current result...

Страница 79: ...ave In the following prompt click on Append to add the current result to the saved data record see below To create a new measurement file select New This is a simple meth od of adopting the settings of an existing file for a new measurement To overwrite the data of the saved file select Overwrite Measurement data that cannot be displayed as a trend For measurements such as orbit impact test and 1 ...

Страница 80: ...data are displayed in a waterfall dia gram In a TrendingSpectrum the display depends on which panel of the results screen is activated the upper panel containing the spec trum waterfall or the lower panel containing the band alarm overall values trend see p 4 10 To compare the current measurement with the historical data pro ceed as follows After the measurement is completed press the MENU key in ...

Страница 81: ...ng to appear the following requirements must be met The maximum permissible deviation of the measurement values is set in the OMNITREND software here 20 The deviation and Historical data functions are activated in the OMNITREND Route Editor The settings and data sets have been loaded into VIBXPERT with the route The display mode for route results is set to Standard see also Device setup for route ...

Страница 82: ...ee list view near measurement locations are labeled with an icon that also indicates the measurement channel for the measurement locations When a near measurement location is selected the associated measurement location is automatically highlighted see below VIBXPERT always groups two fitting measurement tasks to one 1 1 measurement according to certain rules Measurement tasks that do not fit this...

Страница 83: ...n Options during the route Skipping a measurement location measurement task see p 3 10 If you skip over a measurement task only the grouped measure ment task within the 1 1 measurement is skipped If you skip a measurement location the near location is skipped as well including all associated measurement tasks Disabling the spatial sequence Near location can be disabled in the route This procedure ...

Страница 84: ...tware In OMNITREND a sensor of type ICP must be assigned to the measurement tasks Because VIBXPERT only has two measurement channels a special cable adapter VIB 5 336 is required that groups the second and third signal line Y Z on channel B The measurement tasks for the X and Y directions are grouped by VIBXPERT into a 1 1 measurement and simultaneously recorded in channels A and B VIBXPERT then r...

Страница 85: ...surement location In the tree list view triax locations are identified by an icon that indicates the sensor axes The other two associated measurement locations are automatically highlighted s below Click on the measurement location to display the tasks The measurement tasks for the X and Y directions are where pos sible grouped to a 1 1 measurement and are measured simul taneously on channels A an...

Страница 86: ... Channel Restrictions also apply to the following measurements Spectrum Averaging is not possible for rpm controlled recordings Time waveform The time synchronous averaging type is not per missible Multi measurement tasks rpm controlled recording is not possible Shock pulse measurement roller bearing condition rpm controlled recording is only possible without normalization Configuration Click on M...

Страница 87: ...cified time or when the set rpm is reached 0 1000 Hz the rising or falling edge can be selected Manual The measurement stops when the memory card is full or when the ESC key is pressed Further settings Switch off backlight To save power when operating the device during recording the display illumination can be switched off permanent ly This option is independent of the settings in the device setup...

Страница 88: ...yed and select if necessary an additional parameter maximum minimum max min Up to nine values can be displayed at the same time To hide the dialog window and display the concealed areas of the measurement screen press the F key Starting the measurement recording Press the MENU key in the configuration screen and click on Start The measurement screen appears A dialog is displayed in the fore ground...

Страница 89: ...zation parameters This normalization then applies to the entire measurement duration Note rpm controlled recording is only possible without normalization Trending spectrum To be able to record the measurement values in a trending spectrum the recording function is also available in the Machine template mode Recording is configured and started as described in the previ ous section Special character...

Страница 90: ... measurement will be ended The recording can be stopped at any time using the ESC button You can save the mea surement data that have already been recorded If the battery runs out during recording the device automatically saves the data The data can be read into OMNITREND via Multimode import and then analyzed Alternatively they can be read out of the device using the VIBXPERT utility service prog...

Страница 91: ...d by the VIBRONET field multiplexer VIB 8 306 on one string line and are measured consecu tively Only vibration measurements with Current Linedrive accelerom eters are possible Up to 6 multiplexers with a maximum of 54 measurement locations are possible on one string line To connect VIBXPERT to a multiplexer you need the following Connecting cable VIB 5 346 BNC connecting adapter VIB 5 346 MUX For...

Страница 92: ...erably you should use an ESD wrist strap Loosen the screwed cable gland at the input Stringline and in sert the BNC connecting adapter into the multiplexer as far as it will go Connect the open end of the BNC connecting adapter to the MAS TERline terminal Tighten the screwed cable gland on the multiplexer and close the cover Connect the VIBXPERT to the multiplexer using the connecting cable VIB 5 ...

Страница 93: ... there You can conduct the respective measurement again or skip it in order to continue the data acquisition Manual data acquisition In the route setup measurement deactivate the option Autostart MUX The measurement locations can be processed in any order Start the measurements at each measurement location by pressing the button The remainder of the procedure is the same as for automatic data acqu...

Страница 94: ...or phase use a suitable sensor e g VIB 6 631 which you connect to the VIBX PERT RPM channel To connect VIBXPERT to a multiplexer you need the following Connecting cable VIB 5 346 BNC connecting adapter VIB 5 346 MUX Diagnostic measurement Connect the VIBXPERT to the multiplexer see p 3 42 Connect an RPM sensor to the VIBXPERT if necessary In the startup screen click Multimode and mark the correspo...

Страница 95: ...he File Manager P 6 3 Route template Results of a route or a machine template are usually stored automati cally p 2 18 to speed up the data recording The results only then remain in the display if the menu is opened within the selected waiting time the AutoSave option is deactivated a stored result is opened the measurement has exceeded a threshold value To open a result of a route template measur...

Страница 96: ...he threshold values are exceeded during the measurement these appear in the field below the respective measurement value see below Also the respective LED lights up next to the display see pages 2 2 Thresholds can be displayed as an absolute value or as a difference to the measurement value For vibration parameters with more than two overall values press the navigation key up down to display the o...

Страница 97: ... determine if thresholds have been exceeded If more than one overall value appears in the diagram only the threshold for the high lighted value is displayed in the below screen upper alarm for RMS value Press the navigation key up down to mark the other overall values and display the respective threshold values Zoom Press the button repeatedly to magnify the area around the cursor This process can...

Страница 98: ...ed The key is used to zoom out Scaling the amplitude Y axis Press the navigation key up to magnify the scaling of the Y axis and to make low amplitudes visible To reduce the scaling again press the navigation key down Rotational speed marker The yellow rotational speed markers indicate the trigger pulses dur ing signal measurement In the circular plot the speed markers also indicate the direction ...

Страница 99: ...e waveform is displayed in a Cartesian plot XY diagram However you can change the display to a circular plot This is useful when the gear mesh in a gear stage is to be emphasized for example In this type of display the measured time interval is pro jected on a circle so that the start and end times are directly adjacent to one another If the shaft rotates by 360 within the measured time interval t...

Страница 100: ...in only the signal from the main cursor is being used Averaging mode Single shot Averaging Window type Select the appropriate window type P 3 24 Press the MENU key and click on OK The calculated spectrum can be saved and measured again A trans formation is only possible in the Cartesian display Displaying the rpm run If the rpm is recorded alongside the time waveform you can display the rpm run as...

Страница 101: ...ltaneously with a trigger sensor activate the Use trigger mark option and enter the number of Revolutions per trigger pulse Using the Start at trigger option you can synchronize the time signal using the trigger pulse If there is no trigger signal you can simulate it by using a manually entered RPM value Custom revolution In this case the trigger options described above are deactivated The RPM val...

Страница 102: ... the desired piece of information The data to be displayed by default after the measurement is set in the display setup see p 4 18 The active window pane is highlighted by a frame Press the F key to switch to the other window pane Info Max 10 Lists the 10 highest amplitudes in the spectrum Click on an entry to set the cursor to the corresponding line of the spectrum You can sort the list for ampli...

Страница 103: ...uencies in a spectrum Frequency markers are defined for each machine hierarchy level in the OMNI TREND software and loaded into VIBXPERT with a route template Press the F key to activate the lower window pane To display the frequency markers of each single hierarchy level press the MENU key and select from the list see below Frequen cy markers from lower hierarchies are added to higher hierarchies...

Страница 104: ... contains the trending values the current mea surement values and if set up the reference values Comparing trending values with historical values In the lower window pane press the MENU key and click on His tory A diagram appears in which the historical and current mea surement values are visible as a trend Info Trending bars in the Trending Spectrum only The bar display in the Trending Spectrum v...

Страница 105: ...cessory VIB 5 333 Set RPM After a measurement you can either enter the machine RPM directly or read it in via the marked frequency in the spectrum Press the MENU button click Set RPM and select the desired option Display RMS Calculate the RMS value of the spectrum see below Post processing Each spectrum is initially calculated from the measured quantity Post processing alters the measurement quant...

Страница 106: ...hest displayed order can be moved Adjust the required number of the cursor Subharmonics Show hide subharmonic cursor The subharmonic cursor can be used to detect subharmonics in the spectrum The spacing of the individual cursors to one another cor responds to a integer fraction 1 n of the main cursor Adjust the required number of the cursor If the subharmonic cursor is activated the delta cursor i...

Страница 107: ...ld Use the navigation keys to do the following tilt the diagram around the frequency axis rotate the diagram around the amplitude axis This display mode is indicated by the icon shown right Cursor Only the main and delta cursors are available for evaluation in the 3 D view To activate the delta cursor press the MENU key and click on Cursor Delta see P 4 5 Zoom The Zoom function can be used in the ...

Страница 108: ...the MENU key and click on Zoom X axis or Zoom Z axis Evaluating individual spectra 2D view For the evaluation of an individual spectrum proceed as follows Highlight the relevant spectrum with the cursor Press the F key to display the individual spectrum Alternative Press the MENU key and click on Details Call up the respective diagnosis functions with the MENU key To return to the 3D view again pr...

Страница 109: ... selected for amplitude spectra with the vibration acceleration vibration velocity and vibration displacement quantities as well as for user defined quantities Envelope spectra order spectra and order based spectra cannot be converted into sound spectra Displaying the sound spectrum To display an amplitude spectrum as a sound spectrum proceed as follows Open the Display Setup for the underlying am...

Страница 110: ...to evaluate the sound pressure level with a filter set decibel Then press the MENU button and click on Save The individual frequency bands third octaves octaves appear in the sound spectrum as does the overall sound level in a logarithmic scale The lower Info field specifies the sound pressure levels of the individual bands The cursor and zoom functions are not available in this display Sound spec...

Страница 111: ...by default with the RMS value After the mea surement press the navigation key up repeatedly to display the overall values of the series that were not displayed If the thresh old value is exceeded the RMS values and the overall value that exceeded the threshold value by the largest amount are displayed A2 Display Setup for Trend Overall values Meas value Selection of overall values The line type ca...

Страница 112: ...ffix for 1 1000 or 1000 Instead of 1 1000 or 1000 the X axis can be labeled with the abbreviation m milli or k kilo Amplitude spectrum Amplitudes in RMS or peak values 0 peak peak peak RMS value of entire spectrum see p 4 11 Order display spectrum Scaling of the X axis in Hz No or orders Yes The shaft RPM must be known measured or entered Amplitude scaling spectrum linear or logarithmic in decibel...

Страница 113: ... representation and single signals Cartesian representation can be selected for the shaft movement The AC only option shows the AC component of the signal Show amplitude as Coastdown curve Phase vector Amplitudes can be displayed as an RMS value or a peak value 0 p Continuous phase Coastdown Phase with Bode plot The scale of the phase axis begins at 0 and ends at 360 If the curve runs beyond the 3...

Страница 114: ...the spectrum or also the set additional info max 10 time waveform see section B1 should be displayed Display setup channel A B Click on Show to display the display set tings of the individual measurement tasks To edit the display settings of the individual measurement tasks enable the required window pane in the result screen and call up the display setup via the MENU key see diagram on page 5 24 ...

Страница 115: ...export measurement data in MS Excel format for processing on a PC S 4 26 Preparations for direct printing Connect VIBXPERT to the printer see p 2 27 Set up the printer in the VIBXPERT device setup see p 2 26 Print out the results see the following sections Printing the content of a result screen In the result screen press the MENU key Click on Print or select Print Screenshot see below left The pr...

Страница 116: ...either edited nor deleted To create a new report configu ration proceed as follows Press the MENU key in the result screen Select Print and click on Report printouts The report configuration appears see below Select the Reports field Press the MENU key and click on New Enter a name in the text editor In the Common settings tab select the entries that are to appear in the measurement report Company...

Страница 117: ...Result event Here you can only set whether or not events should be printed Setup info Information on the measurement settings to be used Three options are available for selection Standard The name of the measurement and sensor setup is print ed Standard evaluation Like Standard plus evaluation setup or machine setup Details Like Standard evaluation plus a screen printout of each setup In the Measu...

Страница 118: ...ierarchy are printed out Press the MENU key and click on Print The report configuration appears If necessary change the report configuration The settings in the Common settings tab are the same as the set tings for the measurement reports see previous page The follow ing detailed data can be set in the Measure info tab Unmeasured jobs Measurement tasks that have not been measured are included in t...

Страница 119: ... the following VIBXPERT adapter for USB pen drive VIB 5 330 MEM USB pen drive VIB 5 330 USB Connect the USB adapter to the communication channel green jack In the file manager the USB pen drive is shown as a separate direc tory USB To transfer the report Mark the file Press MENU and click Copy or Move Mark the directory USB Press MENU and click Insert VIB 5 330 MEM VIB 5 330 USB Reports ...

Страница 120: ...t Mark the measurement file and click Export xls The measurement data are then exported and the MS Excel program is started The report templates contain macros which normally are blocked by the program at first In the security warning click Options and activate the option Activate this content Excel then displays the measurement data on two worksheets 1st worksheet Displays the master data for the...

Страница 121: ...bration and is a measure of the intensity of the impacts in the form of a vibration Among other things the crest factor is deployed for wear diagnosis in roller bearings and gearing mechanisms as well as for cavitation A harmonic vibration of ampli tude 1 has 0 707 as its effective value and a crest factor of 1 41 If the crest factor is higher than 1 41 impacts with higher amplitudes are occurring...

Страница 122: ...pecific factors are combined in the so called initial value or the dBi value The dBi value is calculated from the rota tional speed and the bore diameter of the bearing Signal damping lubrication load These unspecific external influencing factors must be determined empirically within the framework of a normalization adjustment To gether with the dBi value the adjustment value obtained in this way ...

Страница 123: ...manually before the shock pulse measure ment External RPM is measured with an RPM sensor before the shock pulse measurement Enter the dBa value if it is known Otherwise carry out a normal ization adaptation set dBa to 0 see previous section Enter the diameter of the bearing inner race If the normalization type is set to manual enter the RPM see be low To start the shock pulse measurement click on ...

Страница 124: ...nect the laser trigger sensor to the measurement device using the trigger cable VIB 5 432 2 9 To adjust the system point the laser beam at the measurement marker while the machine is at a standstill Switch on laser for adjustment In the case of coast down measure ments the laser automatically switches on prior to the measurement during balancing the laser can be switched on manually in all other c...

Страница 125: ...does not carry out any sensor detection on the measure ment channel for temperature If the results are not correct check the connection and the sensor cable Measurement range VIB 8 608 50 C to 500 C VIB 8 607 50 C to 240 C Temperature probes Type K thermocouple technical data are given in the sensor catalog Typical installation for a vibration measurement with simultaneous recording of the rotatio...

Страница 126: ...Measurement is stopped when the stop RPM is reached Coastdown Measurement is started while the machine is running at the operating RPM VIBXPERT then begins to measure the RPM continuously Once you have switched the machine off and it drops below the selected start RPM VIBXPERT automatically starts recording the data Mea surement stops once the selected stop RPM is reached Start and stop RPMs are d...

Страница 127: ...ive icon in the Advanced tab Press the MENU key and click on Task Manager Click in the uppermost menu to display the stored measurement tasks The Show Dual Tasks or Show Single Tasks menu entries display the available 2 channel or 1 channel tasks see below Select the required measurement task B Starting the measurement Click on the measurement task icon A connected laser trigger sensor is automati...

Страница 128: ...y the progression of the RPM dependent vibra tion components in the spectrum can be tracked and the points of resonance can be identified To start the measurement the following condition must be fulfilled fmax 4x nmax maximum rpm The results screen always displays two consecutive spectra of the recorded series see below Use the key to scroll forwards and backwards The current number and the associ...

Страница 129: ...ces These lines represent the 360 0 transition that can occur any number of times due to the constant continuation of the phase progression see P 4 19 5 6 Nyquist diagram This type of diagram displays the locus amplitude and phase of the curve in polar coordinates see below Changing the type of diagram Press the F key and select the type of diagram Averaging cancellation if rpm deviation 10 VIBXPE...

Страница 130: ...ram you must select the channel whose spectrum is to be displayed Characteristic value RPM Phase RPM In two channel measurements it is possible to display the channels individually or together in one screen Press the F key and select the option Display Channel A B or A B Channel A B display Channel A is shown in blue channel B is shown in green The delta cursor is not available for 2 channel measu...

Страница 131: ...reased in the measurement setup in order to increase the measurement rate see below and P 3 21 In machines the coast up and down very slowly the number of saved measurement values can be very high without significantly improving the quality of the results In this case you can reduce the measuring rate i e the number of saved measurement values per change in RPM and save memory space at the same ti...

Страница 132: ...low As the measurement task select Dual Amp Startup Coastdown User see p 5 7 As the measurement setup select Dual Coast Down User Set the following parameters in the measurement setup Measurement quantity Vibration displacement Lower frequency DC In the sensor setup select the displacement sensors e g VIB 6 640 Requirements for correctly interpreting the results The sensors are installed at an ang...

Страница 133: ...on measurement task Choose from file Import from a Static shaft position result file Sensor arrangement The arrangement of the sensor relative to the direction of rotation in fluences the position and orientation of the shaft displacement in the diagram Because the direction of the shaft displacement with respect to the direction of rotation is a characteristic of certain fault types in journal be...

Страница 134: ...ent the Cross Channel Phase Measurement is determined without a reference transducer The measurement is carried out as a 2 channel measurement where in addition to the signal amplitudes the phase difference of the two channels is determined Depending on where and in which direction measurements have been carried out on the machine the phase dif ference is an indicator of the presence of a machine ...

Страница 135: ...Cross Channel The coherence factor is a measure of the quality of the measurement and indicates how strongly the signals of both channels are coupled If the factor is close to 1 the measurement is usable Phase trend If you would like to record the phase trend as a function of time or rpm save the individual measurements by Appending to a file see also p 3 29 In the Display Setup for the trend disp...

Страница 136: ...t the sensors at any angular displacement between 5 and 175 Then enter the angular displacement in the measurement setup Sen sor angle parameter However measurement accuracy is limited when the sensor angle 90 The sensor on channel A defines the X direction and the 0 posi tion The keyphaser is mounted in the 0 position Note the setting of the active edge for the trigger signal see Key phaser Menu ...

Страница 137: ...nging the diagram type After the measurement Press the F key and click on Individual signals or on Orbit respec tively or Open the Display Setup and select the diagram type see below Changing the order filter After measurement press the F key and select the required order in the Order field The order of 0 corresponds to the unfiltered signal and can only be adjusted if the measurement parameters i...

Страница 138: ... envelope frequency spectrum can be calculated VIBXPERT saves the envelope time signal filtered last together with the envelope frequency spectrum To display the time signal press the MENU key and select Info Time signal see below VIBXPERT provides two methods for calculating the envelope High pass and low pass filtering is carried out on the basis of hardware or software In the case of hardware f...

Страница 139: ...pectrum The assignment of the input signal to the measurement quantity is specified by the Measurement quantity and Unit parameters in the transducer setup see P 2 20 Examples of user defined measurement quantities Measurement of the pressure as a current level 4 20mA DC Connection to pressure transmitter Measurement of the flow rate as a current or voltage signal 4 20mA 0 10V DC Connection to flo...

Страница 140: ...her with the as sessment of the results see below Evaluating the results The evaluation of the results is carried out on the basis of the stored thresholds If a threshold is exceeded the corresponding symbol ap pears in the Status column see below left For a detailed view of the evaluation scale press the MENU key and click on Evaluation Overview see below Result of the single measurements After t...

Страница 141: ...es or machine templates To do this acti vate the Multitask option see below OMNITREND then automati cally combines the relevant measurement tasks into a single multi measurement task Note Breaking down a multi measurement task To measure the measurement tasks of a multi measurement task indi vidually in the route machine template proceed as follows Open the selection list of the measurement tasks ...

Страница 142: ...Here you can set the sensor for each channel A B and define wheth er the rpm should be recorded as well Channel A Channel B tab Here you can define the measurement task for each channel Press the MENU key and click on Select task see below The import wizard appears in which you can select the individual measurement tasks in three steps see also the next section Dual measurement Trigger tab The tri...

Страница 143: ...arted consecutively or simultaneously on channel A and channel B If the averaging type is set to synchronous averaging for one channel the asynchronous with trigger start option is identical to the synchronous trigger A start option i e measurements start at the same time on both channels with channel A acting as the trigger In the Setup field select the respective measurement parameters for chann...

Страница 144: ... measurements are completed the blue LED lights up if no thresholds have been exceeded or measurement errors have oc curred see P 2 2 The functions that can be triggered via the keyboard only apply to the active pane which is indicated by a frame As well as the pane for channel A and channel B the entire screen also counts as a pane To evaluate or repeat one of the two measurements activate the co...

Страница 145: ...e signals from a running machine can be filtered out using the so called negative averaging method Attach the transducer to the machine either with a magnet or even better with a screw fitting Set the number of individual measurements in the measurement setup e g 2 measurements see below Start the measurement by clicking on the task icon see above When the message Wait for trigger appears excite t...

Страница 146: ...g Enable Negative averaging in the measurement setup Perform the individual impact tests Click on Start in the window that opens to measure the reference spectrum without producing a machine excitation Click on Stop when a sufficient number of reference spectra have been recorded and averaged to form a result see below Displaying the results Activate the upper pane with the F key Spectrum P 4 8 Pr...

Страница 147: ... other measurement locations The sensor on channel A is attached to the designated measurement locations of the structure in sequence and records the respective structural response Impact test with impulse hammer This measurement task is similar to the one channel impact test channel B records the excitation and is the trigger for the measure ment To take measurements on a running machine the nega...

Страница 148: ...a di rection to each impact result to document the position of the measure ment location and the measurement direction Multiple impact results can be contained in a single file C ODS results During measurement the system response appears in the upper win dow and the excitation in the lower window either as a spectrum or time waveform see also p 4 20 After the individual measurements are completed ...

Страница 149: ...er spectrum In an order spectrum the frequencies are recorded and displayed as a multiple of the shaft rotational frequency order In these mea surements the RPM is recorded at the same time as the vibration sig nal and is taken into account when the order spectrum is calculated If short term system related fluctuations in the RPM occur the sample rate of the time signal is adjusted accordingly res...

Страница 150: ...ibration displacement measuring quantity Application examples The DC component in the time waveform can be evaluated when pro cess parameters or distances are measured When a 2 channel coastdown curve is measured with the vibration dis placement measuring quantity the shaft centerline plot during runup or coastdown in a machine with journal bearings can be calculated from the DC component of the s...

Страница 151: ... the required digit To delete numerals press the ESC key Only the left digit of a num ber is deleted The sign can be toggled at any time with in the character field Decimal places are entered as a period To save the value press the MENU key and click on OK Decimal places Decimal places can only be entered if the Accuracy of the respective quantity is not set to zero see the section on Units in the...

Страница 152: ...ight of the character word to be deleted Press the F key to switch the cursor into the character table Click on in the character table backspace key see below To delete a text field Press the F key until the entire text field is highlighted Click on Enter Press the F key again to switch the cursor into the character table Click on in the character table backspace key Special characters Space comma...

Страница 153: ...easurement type are displayed e g overall value vibration acceleration If you open the File Manager from the start screen all files are dis played see below Functions of the MENU key Save Saves the measurement result Open Opens the highlighted file Create dir Creates a new folder Rename Renames a file folder Print Prints out a PDF file Copy Paste Cut Copies inserts moves file folder via the clipbo...

Страница 154: ... the PDF format can be printed as follows Connect VIBXPERT to a printer Open the File Manager and select the file to be printed Press the MENU key and select Print Printer Printing starts Details on connecting and setting up a printer can be found in Chapter 2 p 2 26 Transferring a PDF file on a USB pendrive See page 4 25 Note ...

Страница 155: ...processing in the DASYLab analysis program Transferring language and help files for translation for authorized PRÜFTECHNIK representatives only Installing and starting the program The installation program VibXpert_utility_version exe can be found on the PRÜFTECHNIK homepage www pruftechnik com or on the Condition Monitoring CD included with the delivery Double click on the file to start the instal...

Страница 156: ...ield to the right click Register serial The demo version is valid for 30 days If you wish to use the module after that you must request the password Request the password Enter the address data in the registration window Activate the desired function and click on Request registration In the next screen check the entries and click on Print to print out the data Send the printout to the following fax...

Страница 157: ... yellow Smiley symbol appears A red Smiley symbol indicates a faulty connection VIBXPERT successfully connected Configuring VIBXPERT The configuration encompasses the following functions Updating the firmware Transferring logo images for the report printouts Click on the Configure device button The New firmware button starts the VIBXPERT update tool that updates the firmware in VIBXPERT see also p...

Страница 158: ...er Export xls exports results into a MS Excel file Use Delete to remove a file from the device Close closes the file selection window Get files File selection window System Transferring system files You can perform the following procedures Backup and restore of the data and device configuration Format CF memory card All the above mentioned steps in a procedure Defragmentation Click on the System b...

Страница 159: ... files in the device Click on Format CF card to format the memory card in the device Risk of data loss Before proceeding make sure that all important data and settings are backed up on an external storage device Formatting deletes all data on the memory card The process is not reversible Click on OK to start formatting Click on Defragmentation to perform the procedures Backup Restore and Format in...

Страница 160: ...the vibration signals via the measuring pin Several pressure sensitive sensors are arranged as a ring around the vibration sensor When coupled to a measuring pin these sensors detect the pattern in the plastic ring in the measuring pin This coding identifies the measure ment location to the connected evaluation device and determines which measurement tasks are to be performed on it VIBCODE measure...

Страница 161: ...the VIBCODE concept is structured as follows A VIBCODE route VIBCODE measurement locations at which measurements are taken regularly are part of a route Because each route is created for a par ticular purpose e g weekly inspection it only contains a certain subset of all VIBCODE measurement locations VIBCODE features au tomatic measurement location recognition so that the measurement locations can...

Страница 162: ...measurement Connecting the VIBCODE sensor Insert the sensor straight into the measurement location press it in place lightly and lock it by turning it clockwise until it stops This secure connection ensures that the measurement direction and pressure are the same for each measurement and that the results are reproducible To disconnect the sensor turn it in the opposite direction and remove it from...

Страница 163: ...ent location in the VIBCODE pool the measurement task scheduled first starts automatically All other measurements must be triggered manually via the measurement task selection To return to route mode from pool mode press the MENU button and click on Route If the VIBCODE measurement location is not contained in either the route or in the pool change to the Multimode mode to perform the required mea...

Страница 164: ... the film If necessary the protective film can be ordered from your PRÜFTECHNIK representative Never use solvents or other strong cleaning agents Maintenance Calibration Various factors such as aging or temperature can cause an offset in the analog electronics This offset should be compensated every two months Details are given on page 2 29 To guarantee the high measurement accuracy of the device ...

Страница 165: ...ormation applies to customers in member states of the European Union EU in which EU Directive 2002 96 EG Waste Electrical and Electronic Equipment WEEE has been implemented in national law PRÜFTECHNIK products that fall under this directive are labeled with the symbol shown here What this means for you All electrical and electronic PRÜFTECHNIK products and electri cal and electronic accessories e ...

Страница 166: ...ted Standards fulfilled Frequency response according to ISO 2954 Computer Processor Marvell PXA320 806 MHz Keyboard 1 navigation pad and 7 keys Zoom Escape Function Help Meno On Off Keyboard illumination controlled by ambient light Display TFT LCD backlit Color depth 18 bit 262144 colors Resolution VGA 640 x 480 pixel w 140 ppi Pixel area 116 x 87 mm Memory 128 MB DDR RAM CompactFlash 2 GB to 8 GB...

Страница 167: ...armonics Sidebands Frequency marker Fixed and RPM variable characteristic frequencies for ma chines roller bearings and gearboxes can be displayed in Multimode and Route mode Band alarms Narrow band monitoring of damage frequencies route mode Max 10 List of the 10 highest amplitudes in the spectrum Display linear scaling logarithmic scaling Y axis trend cascade diagram waterfall polar plot order s...

Страница 168: ...the PC VIBXPERT update tool version 1 47 or higher see P 2 37 Serial cable VIB 5 430 2 and Ethernet cable VIB 5 331 Connect VIBXPERT to the serial port and to the network connector of the PC Start the VIBXPERT update tool on the PC Click on the Start Emergency Recovery button In the next screen set up the COM port to be used on the PC Enter the IP address that is to be used by VIBXPERT Local IP ad...

Страница 169: ... on again The update tool subsequently contacts VIBXPERT and starts transfer of the basic firmware The progress of the data transfer is shown in the right pane Transferring data X Then it is only necessary to load the firmware To do this follow the instructions on Page 2 37 ...

Страница 170: ...l inspection Special analyses Phase measurement Coast down Run up overalls phase spectrum Shaft centerline plot Impact test MultiTask Only with registered measurement tasks Route template Only with registered measurement tasks 2 channels VIB 5 311 CH2 1 1 measurement 2 channel measurements for Overalls Time waveform Spectrum Phase measurement 2 channel Phase measurement cross channel Orbit filtere...

Страница 171: ... channel VIB 5 310 1E VIB 5 311 1UG VIB 5 311 2UG VIB 5 311 UOM VIB 8 115 VIB 5 311 1UG VIB 5 311 UOM VIB 8 115 VIB 5 311 2UG VIB 5 311 UOM VIB 8 115 Advanced 1 channel VIB 5 310 1 N A VIB 5 311 3UG N A VIB 5 311 UOM VIB 8 115 VIB 5 311 3UG VIB 5 311 UOM VIB 8 115 Advanced 2 channel VIB 5 310 2 N A N A N A N A VIB 5 311 UOM VIB 8 115 with OMNITREND Data collector 1 channel VIB 5 314 1E N A N A N A...

Страница 172: ...ernal charging station 2 8 F Factory Defaults 2 29 File Manager 6 3 Filter HP LP 3 23 Filter Type 3 23 Find 6 3 Find peak 4 11 Find route 3 11 Firmware re installing 6 18 Formatting 2 31 Frequency marker 4 9 Frequency upper lower 3 21 FRF calculation 3 22 G Getting started 2 1 Graphic Route 2 18 Guarantee 6 15 H Hand strap 2 9 Harmonics cursor 4 12 Historical data 3 30 HP LP Filter 3 23 I Icons 3 ...

Страница 173: ...29 Settling time 2 21 Setup new 3 20 Shaft centerline plot 5 12 Shock pulse 5 2 Sidebands 4 5 4 12 Signal Display Setup 4 18 Signal type 2 20 Skip 3 12 Sound spectrum 4 15 Spare parts 6 15 Spectrum 4 13 calculating 4 6 Speed Marker 4 18 Start measurement Machine template 3 15 Multimode 3 3 Route 3 7 Start Route 3 7 Start Stop RPM Runup coastdown 3 23 Static shaft position 5 13 Status display LED 2...

Страница 174: ...charger complies with the appropriate European Directives The essential safety requirements set out in the European Directives are fulfilled Johann Lösl Managing director QM system certified EN ISO 9001 2008 Ismaning May 6 2010 Place and date of issue Directive EMC directive 2004 108 EC Low voltage directive 2006 95 EC Standards applied DIN EN 61000 6 1 2007 Immunity for residential commercial and...

Страница 175: ......

Страница 176: ...oductive maintenance technology Printed in Germany LIT 53 201 05 2012 0EN VIBXPERT VIBCODE OMNITREND are registered trademarks of PRÜFTECHNIK AG Contents subject of change without further notice particularly in the interest of further technical development Reproduction in any form whatever only upon express written consent of PRÜFTECHNIK AG Copyright by PRÜFTECHNIKAG ...

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