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5: Troubleshooting

5.1 Overview

If you have a problem with your flow monitoring system it can be due to any of the following:

Faulty instrument

If you suspect the instrument is faulty you can check it out using a test block as described in

Paragraph 5.4.

. This

will establish that the instrument is functional and receiving a healthy signal from the connected transducers.

Incorrect setup

A low, or zero, signal could be caused by incorrect set-up such as:

•

Incorrect site data entered into the instrument.

•

Incorrect or non-matching ultrasonic transducers selected for use.

•

Incorrectly fitted transducers – lack of couplant applied, incorrect spacing, insecure attachment.

•

Poor connections between the probes and the instrument.

Application problem

If you are certain that the instrument is healthy and suitably set-up for the current site; and the probes are
properly assembled and fitted correctly, there could be an application problem concerned with the site.

Check such conditions such as:

Poor pipe outer surface quality

•

Uneven surface preventing good surface contact with the transducer.

•

Flaking paint (should be removed).

•

Variable air gap in concrete-covered pipes affecting the ultrasonic signal quality.

Poor internal pipe construction

•

Rough internal pipe walls affecting fluid flow (see roughness factor).

•

Internal welds positioned in the transducer signal path affecting the signal quality.

•

The ‘drippings’ in galvanised-dipped pipes or other irregularities interfering with the signal path.

Incorrect probe location

•

Transducers located too close to bends or valves, disturbing the flow profile.

•

Transducers located too close to insertion probes, disturbing the flow profile.

•

For horizontal pipework transducers should not be positioned on the top of the pipe.

Poor fluid conditions within the pipe

•

Fluid contains bubbles, high particle density or sludge.

•

Air in the top of the pipe.

Low fluid flow within the pipe

•

Pipe obstructions.

•

Malfunctioning valve not opening fully (or closed inadvertently).

Liquid content problems

•

Multiple liquid contents do not comply accurately to expected sound speed criteria.

•

Very hot pipe almost turns water to steam and therefore exhibits the wrong speed characteristics –could
be due to reduced pipe pressure.

•

Flashover – liquid turns into a gas because of lower than required pressure.

Содержание PORTAFLOW PT500

Страница 1: ...PORTAFLOW PT500 Portable Ultrasonic Flowmeter User s Guide www greyline com ...

Страница 2: ...Page 2 www greyline com Note This page has been left blank intentionally ...

Страница 3: ...he Instrument 16 3 1 1 Using the instrument for the first time 16 3 1 2 Enabling disabling the backlight 17 3 2 Using the Quick Start Menu 17 3 3 Using the System at a Regularly Monitored Location 20 3 4 Managing Named Sites 22 3 4 1 Setting up a new site 22 3 4 2 Changing a site name 23 3 5 Instrument Calibration 24 3 5 1 Adjusting the zero cut off 24 3 5 2 Adjusting the set zero flow offset 24 3...

Страница 4: ...current to flow rate 38 3 7 6 How to turn the pulse output OFF ON 39 3 7 7 Pulse output signal calibration 39 3 8 Printing 39 3 8 1 How to print logged data using the RS232 printer 39 3 8 2 How to print logged data using the Bluetooth printer 41 4 Maintenance Repair 44 5 Troubleshooting 45 5 1 Overview 45 5 2 General Troubleshooting Procedure 46 5 3 Warning Status Messages 47 5 4 Test Block 50 5 5...

Страница 5: ...ndard features are Large easy to read graphic display with backlighting Simple to follow dual function keypad Simple Quick Start set up procedure 98k stored data points Continuous signal monitoring RS232 output USB output Pulse output 4 20mA 0 20mA or 0 16mA output Rechargeable battery Battery management Diagnostics Volumetric flow rates are displayed in l h l min l sec gal min gal h USgals min US...

Страница 6: ...gnals to be received correctly This mode might be used with the standard A B transducer sets but for really large pipe installation the optional transducer set D might be recommended Upstream transducer 1 2 Principles of Operation When ultrasound is transmitted through a liquid the speed at which the sound travels through the liquid is accelerated slightly if it is transmitted in the same directio...

Страница 7: ...ucers x2 Set of guide rails for use with A or B transducers Ruled separation bar 2 piece Manual on CD Optional equipment High temperature transducer sets A and B 20 to 200 C Extreme temperature transducer sets A and B 20 to 300 C future option not yet available Transducer set D used for monitoring pipes of 1500mm to 5000mm diameter over a temperature range 20 C to 80 C Kit is supplied in a separat...

Страница 8: ...sducer connections The transducers are connected to two colour coded miniature coaxial sockets located on the top of the instrument Using the red blue connector cables provided the upstream transducer should always be connected to the RED socket and the downstream transducer to the BLUE one for a positive flow reading It is safe to connect or disconnect the cable while the instrument is switched o...

Страница 9: ...to scroll UP and DOWN a menu list and SELECT a menu item When scrolling through a menu an arrow shaped cursor moves up and down the left hand side of the screen to indicate the active menu choice which can then be selected by pressing the ENTER SELECT key Some menus have more options than can be shown on the screen at the same time in which case the overflowed choices can be brought into view by c...

Страница 10: ...en if the battery discharges completely Key Point The battery is not a user changeable item The instrument must be returned to your distributor if the battery needs replacing Key Point Only use the supplied charger or special adaptor lead Failure to comply with this will invalidate your warranty 1 5 Transducers Two sets of ultrasonic transducers are provided as standard When setting up the instrum...

Страница 11: ...rs can be unpredictable Key Point Do not expect to obtain accurate results if the transducers are positioned close to any obstructions that distort the uniformity of the flow profile Guide rail Air Uniform Flow Profile Distorted Flow Profile Flow Flow Possible sludge 45 20 x Diameter 10 x Diameter Valid transducer location In many applications an even flow velocity profile over a full 360 is unatt...

Страница 12: ... 2 Prepare the pipe by degreasing it and removing any loose material or flaking paint in order to obtain the best possible surface A smooth contact between pipe surface and the face of the transducers is an important factor in achieving a good ultrasound signal strength and therefore maximum accuracy 2 2 2 Attaching the guide rails Figure 2 2 Guide rail attachment 1 Slide the separation bar D into...

Страница 13: ... fully towards the outside of the guide assembly to allow sufficient access to fit the transducer 2 Clean the face of the transducer removing all traces of dirt and grease 3 Apply a 1 8 3mm bead of ultrasonic couplant along the centre length of the transducer E 4 Fit the transducer into the guide block ensuring the lugs on the sides of the transducer are correctly located into the slots on the sid...

Страница 14: ...e you must carry out a minor configuration change to the newly installed virtual com port The way in which you gain access to the com port set up window will vary depending on your operating system The following example applies to Windows XP 8 Select Control Panel System to open the SYSTEM PROPERTIES window 9 Click the Device Manager button to open the DEVICE MANAGER window 10 Scroll down to the P...

Страница 15: ... 5 Set up a monitoring or logging application Paragraph 3 6 How to measure totalised flows Paragraph 3 6 1 How to set up basic manual logging Paragraph 3 6 2 How to set up auto timed logging Paragraph 3 6 3 How to set up logging live to a PC Paragraph 3 6 4 How to download saved data to a PC Paragraph 3 6 5 How to print data Paragraph 3 8 Configure the interfaces Paragraph 3 7 Battery charging Set...

Страница 16: ... language The first time you switch on the instrument you may be asked to select a user language 1 Switch on the instrument by pressing the ON OFF button 2 If necessary select the required language using the UP DOWN scroll keys then press the ENTER key Serial V 00 00 00 00 00 00 00 0000 27 Press to start 3 The selected language will be the default when the instrument is next used To change the lan...

Страница 17: ...the backlight is enabled it will illuminate for 15 seconds every time a key is pressed so if it is not required it is recommended that you disable it to prolong the battery discharge time SETUP INSTRUMENT DD MM YY HH MM SS Dim mm Set Date Time dd mm yy hh mm ss Calibrate 4 20mA Pulse output Backlight Disabled Factory settings Change Language 1 Select Setup Instrument from the MAIN MENU 2 Select Ba...

Страница 18: ... dimension then press ENTER OUTSIDE DIAMETER DD MM YY HH MM SS Dimension mm Pipe outside diameter 58 0 4 Enter the pipe wall thickness dimension then press ENTER PIPE WALL THICKNESS DD MM YY HH MM SS Dimension mm Pipe outside diameter 58 0 Pipe wall thickness 4 0 5 If the pipe has a lining enter the lining thickness If nothing is entered the instrument automatically assumes there is no lining 6 Pr...

Страница 19: ...d is not listed select Other and enter a propagation rate in metres second Diesel Freon Other m s FLUID TEMPERATURE DD MM YY HH MM SS Enter Fluid Temperature C 5 00 F 41 00 Continue 11 If you need to alter the fluid temperature from that shown select either C or F with the cursor and press the ENTER key 12 Enter the new temperature value and press the ENTER key 13 The new temperature should now be...

Страница 20: ...low monitoring The FLOW READING screen is the one most used during normal monitoring operation It shows the instantaneous fluid flow together with totalised values when enabled In this mode you can select the flow rate measurement units by pressing keys 7 litres 8 Gallons or 9 m or change the display to show velocity by pressing key 4 3 3 Using the System at a Regularly Monitored Location Setting ...

Страница 21: ...Press to continue to select sens 11 The SENSOR SEPARATION screen now displays a summary of the entered parameters and informs you of the type of sensor to be used the mode of operation and the distance to set up between the sensors In this example it recommends type A ST A standard sensors operating in the Reflex mode spaced 32 2mm apart Take a note of these details Note If you press ENTER before ...

Страница 22: ...l required to set up the Portaflow PT500 system These can then be recalled later when revisiting that particular location The instrument can store up to 20 sites the first site is reserved for QUICK START and cannot be renamed subsequent sites are initially named EmptySite1 through to EmptySite19 3 4 1 Setting up a new site 1 Select View Edit Site Data from the MAIN MENU 2 Select Choose from list ...

Страница 23: ...set A ST Sensor mode Reflex Fluid type Water Save current site read flow Delete this Site Download save current site Exit 9 When all the data is correct you can either a Select Save current site read flow to continue fitting the transducers and opening the FLOW READING screen b Select Delete this site to delete the site name and values and restore it to the original EmptySite name c Select Downloa...

Страница 24: ...an ultrasonic signal between two transducers in either direction A Set zero flow offset adjustment is provided to compensate for any inherent differences between the two sensors noise pick up internal pipe conditions etc It can be used to zero the flow indication under no flow conditions If you have adjusted the Zero Cutoff point to anywhere above 0 you must reset it to 0 before you can observe an...

Страница 25: ...cated by the reference flow meter over the same period 3 Calculate the error between the Portaflow and reference meters If the error is greater than 1 calibrate the Portaflow as detailed below FLOW READING OPTION DD MM YY HH MM SS Data review Zero Cutoff m s 0 00 Set zero flow m s 0 00 Damping secs 10 Totaliser Run Reset Total Reset Total Calibration factor 1 000 Roughness factor 0 01 Diagnostics ...

Страница 26: ...ass Plastics Light metal 0 01 Drawn steel pipes Fine planed polished surface Plane surface Rough planed surface 0 01 Welded steel pipes new Long usage cleaned Lightly and evenly rusted Heavily encrusted 0 1 Cast iron pipes Bitumen lining New without lining Rusted Encrusted 1 0 ...

Страница 27: ...oth out rapid changes in flow rate to prevent wild fluctuations in the displayed flow value It has a range of 1 to 199 with a default setting of 10 With the system running in FLOW READNG mode FLOW READING OPTION DD MM YY HH MM SS Data review Zero Cutoff m s 0 00 Set zero flow m s 0 00 Damping secs 10 Totaliser Run Reset Total 1 Press the Options key to access the FLOW READING OPTION screen shown 2...

Страница 28: ...tall Press ENTER 3 Select Reset Total and press ENTER 4 Press ENTER on the subsequent screen to accept the reset 5 Press ENTER again to return to the FLOW READING OPTIONS menu FLOW READING OPTION DD MM YY HH MM SS Zero Cutoff m s 0 00 Set zero flow m s 0 00 Damping secs 10 Totaliser Run Reset Total Reset Total 6 Select Reset Total and press ENTER 7 Press ENTER on the subsequent screen to accept th...

Страница 29: ...select Note that in a bi directional flow situation you must calculate the difference between the indicated positive and negative flow totals before carrying out the average flow rate calculation How to stop the totaliser temporarily If you want to stop the totaliser temporarily for operational reasons set the Totaliser option to Stall in the FLOW READING OPTIONS screen as described above This wil...

Страница 30: ...ng interval and enter the required period 5 Select Clear log if you want to discard any existing logging data 6 Select START NOW Logging should begin and a Logging to memory message should appear on the second line of the display 7 Select View log as text to check that logging is taking place MM DD HH MM SS Remaining time mm dd hh mm ss Memory Rollover Overwrite Graph Y axis max 50 View log as tex...

Страница 31: ...the Y axis to improve the resolution of the graph press the UP DOWN scroll keys The maximum values will then increase decrease as appropriate 15 To exit the VIEW LOG AS GRAPH screen and return to the REAL TIME LOGGER screen press ENTER Monitoring the logged events at a later time 16 If you wish to monitor the logging progress at any time while you are operating in FLOW READING mode press the Logge...

Страница 32: ...Log data to and choose Memory This will store the log to the internal memory 4 Select Logging interval and enter the required period 5 Select Start date time and enter the time you wish logging to commence Note this must be in the future 6 Select Stop date time and enter the time you wish logging to cease Note this must be later than the start time MM DD HH MM SS Remaining time mm dd hh mm ss Memo...

Страница 33: ... yy hh mm ss 1 In the previous procedures the logging data was routed to the Portaflow PT500 s internal memory where it was stored for later download to a PC printer However you could have sent it directly to the PC or printer for live data display by selecting RS232 in the Log data to option in the REAL TIME LOGGER screen 2 In order for this to work correctly the Portaflow PT500 must be connected...

Страница 34: ...ownload log DOWNLOAD LOG DD MM YY HH MM SS Dim mm Select Serial port or printer press USB RS232 Bluetooth Printer Exit 6 From the DOWNLOAD LOG screen select USB or RS232 then select Send from the subsequent confirmation screen 7 The selected logged data is now downloaded to the PC 8 Upon completion select Exit to return to the VIEW LOGGED DATA screen 9 On the VIEW LOGGED DATA screen you can now Cl...

Страница 35: ...dividual PC installations 4 Enter values for the Port Settings as shown 5 Click on OK 6 The Portaflow Download Terminal settings will now be saved Note When you next start a HyperTerminal session you can select the Portaflow Download terminal from the File Open menu rather than having to re enter the parameters 7 The main HyperTerminal window will now become active note the connection name now sho...

Страница 36: ...t up a virtual port through which the Portaflow PT500 can communicate When you make the connection with the computer use the same technique as described above for setting up an RS232 communications session through HyperTerminal But in this case when you are asked to select a Com Port choose the virtual port set up by the driver installation Once this is done provided the Portaflow and computer com...

Страница 37: ... Date Time dd mm yy hh mm ss Calibrate 4 20mA Pulse output Backlight Disabled Factory settings Change Language 1 Select Setup Instrument from the MAIN MENU to access the SETUP INSTRUMENT screen 2 Select Calibrate 4 20mA Exit 3 Connect a calibrated ammeter to the 4 20mA output and adjust the UP DOWN Scroll keys Coarse and LEFT RIGHT Scroll keys 5 6 fine until the output is exactly 4 0mA The DAC sho...

Страница 38: ...t you want to associate with a 20mA output 9 Select Flow at min output and enter a value of the flow rate that you want to associate with a 4mA output This could be 0 10 Select Output mA for error and enter a value max of about 23mA that you want the 4 20mA output to produce in the event of an error e g if the flow rate is outside the set range 11 Upon completion press ENTER to return to the FLOW ...

Страница 39: ...10 00 Pulse width ms 10 Exit 3 7 7 3 Select Vol per pulse and enter the required value In the example shown a pulse is produced every 10 litres of flow 4 Select a Pulse width in ms to suit the particular application e g electro mechanical counter Refer to the manufacturer s data sheet for the minimum pulse width 5 Select Exit and press ENTER to return to the FLOW READING screen 3 8 Printing Logged...

Страница 40: ...ents unit serial number If nothing is printed check that the RS232 parameter settings are correct for the printer and that the PT500 TxD and RxD signals are compatible with the printer s RS232 interface A gender changer may be required to swap the TxD and RxD signals Printing logged data VIEW LOGGED DATA DD MM YY HH MM SS Dim mm Choose from list of sites View log as text View log as graph Graph Y ...

Страница 41: ...luetooth printer VIEW LOGGED DATA DD MM YY HH MM SS Dim mm Choose from list of sites View log as text View log as graph Graph Y axis max 1 00 Download log Clear log 1 Ensure the printer has sufficient paper then switch ON the printer 2 Select View Logged Data from the MAIN MENU This will display the VIEW LOGGED DATA screen shown 3 Select Choose from list of sites and select the site name for the l...

Страница 42: ...he BT module parameters to operate with the ASL Ap1300 BT printer BT CONNECTION DD MM YY HH MM SS Configuring BT printer Connecting to printer Please wait 3 Connecting BT printer Looks for the ASL Ap1300 BT printer type and IP address BT CONNECTION DD MM YY HH MM SS Connecting BT printer Connecting to printer Please wait 4 Sending data to BT printer If communications has been successfully establis...

Страница 43: ... following status messages will be displayed 1 If another ASL Ap1300 BT printer is found then data will be sent to the printer BT CONNECTION DD MM YY HH MM SS Searching BT printer Connecting to printer Please wait 2 If no other ASL Ap1300 BT printer is found this message will be displayed BT CONNECTION DD MM YY HH MM SS Failed to connect to printer Press to return to Menu or to try again Key Point...

Страница 44: ...grease couplant can be removed from the sensors and guide rails using an absorbent paper towel and a general purpose solvent cleaner 5 We recommend that the ultrasonic couplant is replaced on the sensors every 6 months especially on pipes where the application is too hot to touch If the signal level drops below 30 this is also an indication that the sensors need re greasing 6 Regularly check all c...

Страница 45: ...ing good surface contact with the transducer Flaking paint should be removed Variable air gap in concrete covered pipes affecting the ultrasonic signal quality Poor internal pipe construction Rough internal pipe walls affecting fluid flow see roughness factor Internal welds positioned in the transducer signal path affecting the signal quality The drippings in galvanised dipped pipes or other irreg...

Страница 46: ...ransducer type been selected Ensure transducer separation distance correct Ensure transducers are aligned correctly Ensure pipe diameter within specifications of the selected transducers Ensure the pipe is completely full Ensure pipe surface is not corroded or protective surface loose Check for particles in the fluid Ensure temperature is set correctly Ensure transducer cables are connected correc...

Страница 47: ...nu Response Enter a valid number Damping error Interpretation You have entered an out of range value in the Damping field in the Options menu Response Enter a valid number Totaliser beyond maximum Interpretation The totaliser has overflowed its maximum count The counter will roll over and restart from zero but this message alerts you to the fact Response Reset the totaliser as described in Paragra...

Страница 48: ...and should not require further adjustment Interpretation You have adjusted the DAC outside its accepted range when calibrating the 20mA signal output Response Re calibrate the 4 20mA output see Paragraph 3 7 4 Calibration 4mA Error NOTE The 4 20mA output is calibrated before the instrument leaves the factory and should not require further adjustment Interpretation You have adjusted the DAC outside...

Страница 49: ... out of range value for the pipe wall thickness dimension accepted range is 0 04 2 95 1mm 75mm Response Enter a valid number Lining thickness out of range Interpretation You have entered an out of range value for the lining thickness dimension acceptable range is 0 0 39 0mm 10mm Response Enter a valid number Temperature range Interpretation You have entered an out of range value for the fluid Temp...

Страница 50: ...pe 9 Connect the sensors to the Portaflow PT500 instrument using the cables provided 10 Press ENTER to go to the FLOW READING screen 11 Select the Options key to go to the FLOW READING OPTION menu and set the Damping to at least 10 seconds 12 Select Exit and press ENTER to return to the FLOW READING menu 13 The flow reading value displayed is not important The fact that a reading is obtained indic...

Страница 51: ...coustic wave to propagate across the pipe It is used to see if the signal is being taken from the burst at the correct time to get the strongest signal This value is normally a few µs below the calculated µs value If however this value is much greater than the calculated time then there is a problem with the set up Flow m s This displays flow velocity in m sec to 3 decimal places Signal strength T...

Страница 52: ...Representative write to Greyline or phone the Applications Hotline below United States Tel 315 788 9500 Fax 315 764 0419 Canada Tel 613 938 8956 Fax 613 938 4857 Toll Free 888 473 9546 Email info greyline com Web Site www greyline com Greyline Instruments Inc Canada USA 16456 Sixsmith Drive 105 Water Street Long Sault Ont K0C 1P0 Massena NY 13662 ...

Страница 53: ...Sensor Product Important unclean products will not be serviced and will be returned to the sender at their expense 1 Rinse sensor and cable to remove debris 2 If the sensor has been exposed to sewage immerse both sensor and cable in a solution of 1 part household bleach Javex Clorox etc to 20 parts water for 5 minutes Important do not immerse open end of sensor cable 3 Dry with paper towels and pa...

Страница 54: ...f your invoice This warranty does not cover damages due to improper installation or handling acts of nature or unauthorized service Modifications to or tampering with any part shall void this warranty This warranty does not cover any equipment used in connection with the product or consequential damages due to a defect in the product All implied warranties are limited to the duration of this warra...

Страница 55: ...rse APPLICABLE FLUID TYPES Fluid Condition Clean liquids or oils that have less than 3 by volume of particulate content Applications include river water sea water potable water demineralised water glycol water mix hydraulic systems and diesel oil APPLICABLE PIPE TYPES Pipe Materials Any sonic conducting medium such as Carbon Steel Stainless Steel Copper UPVC PVDF Concrete Galvanised Steel Mild Ste...

Страница 56: ...o PC via USB cable or RS232 Transfer to Microsoft Windows or Greyline user compatible software package optional LANGUAGES Standard Supported Languages English French German Italian Spanish Portuguese Russian Norwegian Dutch OUTPUTS NEW USB Interface Supports USB 2 0 Full Speed 12Mbits sec mode USB software driver provided Printer Terminal Serial RS232 C inc handshaking Analogue Output Resolution A...

Страница 57: ... Output Voltage 12Vdc Max Output Current 1 5A Approvals UL CUL TUV CB CE MECHANICAL Carrying case Rating All components are contained in a hard wearing IP67 rated carrying case with a protective moulded foam insert Enclosure Material Flame retardant injection moulded ABS Dimensions 264mm x 168mm x 50mm Weight Including Battery 2 5lbs 1 1 kg Protection IP54 Keypad No Keys 16 Display Format 240 x 64...

Страница 58: ... F 50 C APPROVALS Safety BS EN 61010 EMC BS EN 61326 1 2006 BS EN 61326 2 3 2006 Battery Charger EN61204 3 SHIPPING INFORMATION Box Dimensions 16 15 x 8 x 14 410mm x 205mm x 355mm Weight 16 5lbs 7 5 kg Volumetric Weight 11lbs 5 kg Greyline Instruments reserves the right to alter specifications without notice ...

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