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Page 12.3

EXAMPLE OF ACCURACY CALCULATION

You make a welding between -50°C and +50°C with a J thermocouple with compensation of
cold welding.

Pt = Pl + Ps + Pm

Pl = + 0.25°C  (linearization accuracy)
Ps = + 0.5°C  (compensation of cold welding)

Used caliber

10mV (see previous example)

Accuracy for voltage measurement 0.1%*10mV + 10µV = 20µV
Slope of J thermocouple

50 µV/°C

Accuracy Pm

Pm = 20/50 = 0.4°C

Total accuracy

Pt = 0.25 + 0.5 + 0.4 = 1.15°C

Содержание DAS220

Страница 1: ...RECORDER DAS240 DAS220 USER S MANUAL Edition June 2021 M220 240 004E 3 Sie haben Fragen oder w nschen eine Beratung Angebotsanfrage unter 07121 51 50 50 oder ber info datatec de Distributed by...

Страница 2: ...NTY Your instrument is guaranteed for one year for labor and parts against any manufacturing defect and or functioning hazard This guarantee extends from the delivery date and ends 730 calendar days l...

Страница 3: ...r or any third party without prior authorization by the company voids the guarantee The user shall be responsible for the return of its appliance to our site Hence it shall provide for a conditioning...

Страница 4: ...months of use and under normal conditions of use We recommend a check after 12 months and max 24 months of use then every 12 months after 24 months For any check of the characteristics the following a...

Страница 5: ...ce 3 5 3 3 UPDATING THE INTERNAL SOFTWARE 3 5 3 4 EXTERNAL POWER 3 5 3 5 BATTERY 3 6 3 6 OFFSET CALIBRATION 3 7 3 7 DEFAULT CALIBRATION 3 7 3 8 DEMO MODE 3 7 4 USE 4 1 DESCRIPTION OF THE UPPER BAND 4...

Страница 6: ...TECHNICAL SPECIFICATIONS 11 1 GENERAL CHARACTERISTICS 11 1 11 2 VOLTAGE RECORDING 11 1 11 3 RECORD OF THE TEMPERATURE OF THERMOCOUPLE 11 1 11 4 PT100 PT1000 RECORD 11 2 11 5 RESISTANCE PROBE RECORD 11...

Страница 7: ......

Страница 8: ...s live voltage Do not alter or defeat the ground connection Without the safety ground connection all accessible conductive parts including control knobs may provide an electric shock Failure to use a...

Страница 9: ...nstrument of the instrument itself Ground accessible parts linked to the ground of the appliance 1 2 1 Conformity and limits of the appliance The DAS240 DAS220 recorder is in conformity with IEC 61010...

Страница 10: ...r thanks to an intuitive interface on a wide capacitive and color 10 1 touchscreen The measurement parameters are easy to program The recording is made directly on an internal 32 GB memory card The DA...

Страница 11: ...period of integration can eliminate noise for high frequency Example main noise at 50Hz or engine noise at 1kHz For white noise or noise with lower frequency lower than recording frequency you can cho...

Страница 12: ...arging LED 3 ON OFF switch and switching on indicator 4 2 USB connectors for female USB stick 5 RJ45 connector for the Ethernet 10 100 Base interface 6 SUB D 25 pin connector for the 16 logical inputs...

Страница 13: ...rging LED 3 ON OFF switch and switching on indicator 4 2 USB connectors for female USB stick 5 RJ45 connector for the Ethernet 10 100 Base interface 6 SUB D 25 pin connector for the 16 logical inputs...

Страница 14: ...2 2 2 Extension module DAS240 only A module is delivered with the appliance with its 70 cm bounding cable and 20 external terminal blocks Extension cord 70cm 5 08 mm 3 contact step connectors Extensio...

Страница 15: ...this homepage any time in the main menu by pressing the additional option or start screen keys At power up the appliances start with the latest configuration when they were shut down see next paragrap...

Страница 16: ...delivered in each additional extension Assemble the extension modules together Then screw the plates with the adjacent modules Stick the additional adhesive buttress Connect the cable using unlocking...

Страница 17: ...op of the power supply the setup will not be saved The appliance setup at next start will be the same as the one of the latest start or of the latest acquisition 3 2 Connection to the measuring circui...

Страница 18: ...ref 902406500 50 In this case select the current type among the parameters of the relevant channel Connect the measurement wires to the shunt terminals 3 2 6 Connection of the ground If the source of...

Страница 19: ...on an USB stick Place it on the USB connector on the rear side of the appliance Press the Setup key Then press the Software update key to enter the update Finally to run the update press the Sofware...

Страница 20: ...ery should last 200 charge discharge cycles or 2 years Advice to extend the life of the battery Do not discharge too much Do not store the batteries too long without using them Store the battery at ar...

Страница 21: ...atly 5 minutes Restart the appliance 3 7 Default calibration You can restore the default factory calibration to correct any possible mistake in the calibration coefficients Enter the Electric Calibrat...

Страница 22: ...dditional Option key Press the Locking the recorder key Confirm The keypad lock will occur 10 seconds after you have pressed the confirmation key All the keys of the appliance will be blocked The Main...

Страница 23: ...ery status if present option 3 Direct access to display 4 Access to the display of the saved file 5 Access to the record 6 Screenshot button 7 Time and date 8 Access to the main menu Last updates intr...

Страница 24: ...keys Whether all the channels of a complete extension module as well as the associated functions e g A1 A20 FA1 FA4 or B1 20 FB1 FA4 etc Whether a customized bloc Custom 1 or Custom 2 Or the additiona...

Страница 25: ...recovery of a setup saved on the internal storage or on USB stick Save on a disk Saving of the setup on the internal storage or on USB stick Network see the Interface paragraph Additional options Mod...

Страница 26: ...adjustments of the channels You can change these adjustments directly in this table by pressing the parameter you want to update You can display 10 channels maximum or keys to display other channels...

Страница 27: ...Thermocouple o Choice of the thermocouple J K T S B E N C L o Choice of the cold junction compensation o Choice of the unit Celsius Fahrenheit Kelvin Resistance Pt100 Pt1000 o Choice of the number of...

Страница 28: ...igger 1 and 2 the outline of thresholds on the screen is valid in the f t mode a horizontal line allows viewing the threshold Note A warning message displays when the programmed analogic thresholds ar...

Страница 29: ...them in an acquisition the X and Y channels must be recorded Press the Functions key A summary page of functions assigned to each plug in or key allows to change the view page and to view other funct...

Страница 30: ...unctions 4 additional channels K1 to K4 allow having either the calculation of a frequency or a meter For that In the right band see 4 2 scroll until you reach the K1 to K4 logical functions window Or...

Страница 31: ...n the left band you must however confirm the logical channels on the channels and function validation screen see 4 8 You access the configuration page of the logical channels After choosing the logica...

Страница 32: ...ncheck not to validate on the right of the bargraph of the channel The number of recorded channels gives the minimum sampling period We can also choose the validation of logical channels of functions...

Страница 33: ...Page 4 11 A key allows to validate the functions the 4 functions associated to the viewed group appear The minimum sampling period appears see 5 x...

Страница 34: ...rical page allows having in real time all values of channels groups Plugs in personal group etc The or keys allow to change groups and view other channels For each channel you view The name of the cha...

Страница 35: ...graphical visualization F t XY Numerical of measurement full screen Full screen to visualize the reticule on full screen f t mode Color to customize the display colors background reticule cursor Assig...

Страница 36: ...choose the channels of groups Custom 1 and Custom 2 we choose then 24 channels maximum among all recorded channels The reinitialize channels key erases the group configuration Freeze the screen freez...

Страница 37: ...o visualize in real time the values of each channel 1 The or keys allow to choose the group to view 2 By pressing a specific channel o The graph terminals are bound to this channel o In real time acqu...

Страница 38: ...ming the conditions of start and stop of the data acquisition Selection of the actions after data acquisition or plotting and validation of data save in real time See the chapter about data acquisitio...

Страница 39: ...the following window shows up Read file selection of the file to view Write data to file saving the part of the displayed file into another file For big amounts of acquisition data to display recover...

Страница 40: ...The following shows up on the screen current sampling speed status of data acquisition waiting for trigger sampling rate xx 4 15 Screen copy You can create a file copying the content of the LCD screen...

Страница 41: ...changes from negative to positive Level trigger no need to pass the threshold o Example Channel A1 high level threshold 0V triggers only if the signal is positive Alarms only have level triggers Anal...

Страница 42: ...eshold 1 Threshold 2 selection of the threshold to settle each channel is tested with reference with 2 thresholds i e you can program a start condition on the channel A1 and the threshold 1 and a stop...

Страница 43: ...f their respective channels you open the threshold parameter window One of the thresholds or the first achieved condition activates the trigger All thresholds and all conditions must be simultaneously...

Страница 44: ...the trigger condition The 12 logic channels can be used in the trigger word either active at status 0 less than 1 6 volt or active at status 1 more than 4 0 volts or non used X AND OR the logic funct...

Страница 45: ...ulations Then press the Mathematical calculations key Selection of the number of calculations Channel selection of the channel where the calculation is made Function selection of the calculation funct...

Страница 46: ...window anywhere on the screen click slide Under Direct display calculations are made in real time and the display is updated every 300ms The calculation is made on the 1000 points displayed on screen...

Страница 47: ...elow the median High The most frequent value above the median Amplitude High Low On positive oscillation 100 Amplitude High Max On negative oscillation 100 Amplitude Min Low Frequency Period 1 Average...

Страница 48: ...t of the time of 1st negative pulse It is measured at 50 of amplitude Positive cyclic ratio period duration pulse positive Negative cyclic ratio period duration pulse negative Average N i i V N Aver 1...

Страница 49: ...data acquisition Manual by pressing a key Trigger on a channel or a combination of analogic or logic channels see 5 Waiting after a delay or at a specified date and hour Automatic immediate automatic...

Страница 50: ...f the trigger is in automatic mode the data acquisition starts On the upper left of the screen appear the name of the file the current sampling speed the data acquisition state waiting for trigger The...

Страница 51: ...rt of the data or change of page Keys of the Display menu Total the complete memory is displayed and update during the acquisition Partial only a part of the memory is displayed the screen is frozen o...

Страница 52: ...al cursors Channel value cursors horizontal cursors 7 Zoom between cursors makes it possible to zoom between the positioned cursors Zoom and Zoom make it possible to zoom or unzoom onto a part of the...

Страница 53: ...alues X 2 Display of the cursors 3 Selection of the channel where to apply the cursor 4 Zoom between cursors 5 Manual change of the caliber position of the channel 6 Return to the initial calibers pos...

Страница 54: ...disk or an USB stick if it was connected at the start of the appliance 2 Copy of a file to USB copy the selected file or folder to an USB peripheral 3 Type the name of a new file 4 Create folder crea...

Страница 55: ...e internal flash disk or an USB stick 8 2 1 Save Setup files Press Save to disk You can type the name of the file with the alphanumerical keyboard displayed on screen Advice Do not save files to the r...

Страница 56: ...place and name of the file to load and display on screen then press Load configuration make it possible to load the configuration of the appliance when the file was created The pending configuration o...

Страница 57: ...Logic channel 5 23 Logic channel 6 10 Logic channel 7 22 Logic channel 8 9 Logic channel 9 21 Logic channel 10 8 Logic channel 11 20 Logic channel 12 7 Logic channel 13 19 Logic channel 14 6 Logic cha...

Страница 58: ...splayed at the top or the bottom of the screen according to the selected position They are numbered from the right to the left Each channel is plotted between two dotted lines that show their limits T...

Страница 59: ...the charge and 15V is the charger is connected The ground of this power supply is the mechanical ground Thus you can use this output to provide power to a sensor or an electronic circuit in order to m...

Страница 60: ...according to the signal voltage 0 to 250V connection 0 250V logic channel red black by insulated pin plug between red and black terminals max usable voltage 250V continuous or alternating typical trip...

Страница 61: ...al delay for a falling signal 50ms Use Link the box to the input output connector of the appliance with the 25 pin connector provided as an option Connect the logic channels to record with respect of...

Страница 62: ...nnel 1 8 Blue L9 L16 8 Logical channel 9 16 Yellow AL1 AL4 4 See below DAS240 DAS220 Mark K1 L13 Logical function K1 K2 L14 Logical function K2 K3 L15 Logical function K3 K4 L16 Logical function K4 DA...

Страница 63: ...ocol to dialog with the PC Thus you can give it an IP address with a subnet mask Ask your network administrator an IP address and a corresponding mask then when you have Setup the recorder with the SE...

Страница 64: ...graphs to the recorder 10 2 WIFI interface Use only the USB stick provided by SEFRAM Turn the appliance on with the USB stick on a relevant port In the Setup menu press the Network key Once the Wi Fi...

Страница 65: ...ou recorded your data acquisitions you can rename them move them copy them or erase them Transfer your files to your computer to use them with the provided SeframViewer software or FLEXPRO You cannot...

Страница 66: ...to the applications you need Just open the VNC viewer file where you recorded it On the VNC Server line you must type the IP address of your recorder and the password the default password is sefram th...

Страница 67: ...rotocol Launch the SeframViewer software or double click on a file Open a data acquisition file suffix rec You can select the channels to display the display mode f t or xy the self calibration of the...

Страница 68: ...m Files x86 SeframViewer seframviewer exe myfile rec x will create a xls file C Program Files x86 SeframViewer seframviewer exe myfile rec t will create a txt file Excel export will directly launch Ex...

Страница 69: ...les using network via Ethernet or WiFi DASLaB is available on the sefram website http www sefram com en products recorders dataloggers DAS240 multi channel handheld recorder html According to your nee...

Страница 70: ...voltage category 100V cat 1 see 11 12 Type of measurements Voltage current through external shunt Thermocouple J K T S B N E C L Pt100 Pt1000 Resistance 11 2 Voltage recording max caliber 200 V 100 V...

Страница 71: ...ode 50 Accuracy at 20 C room temperature 0 3 C 0 1 of the measurement value 11 5 Resistance Probe Record 2 input ranges 1k Current generator 1mA Accuracy 1 10k Current generator 100 A Accuracy 10 11 6...

Страница 72: ...cy 0 1 from 10Hz to 100Khz 0 01Hz from 1Hz to 10Hz PWM o Frequency 100Hz to 2kHz o Accuracy 0 1 11 7 2 Logic channels Number of channels 12 Input impedance 4 7k Max sampling frequency 1 kHz 1ms Max ad...

Страница 73: ...ion see 11 6 11 10 Communication interface 11 10 1 Ethernet Speed 10 100 base T Connector RJ45 DHCP possible FTP server VNC server NTP client Remote control Protocol TCP IP Connection port 23 11 10 2...

Страница 74: ...V 6 5 Ah 9 V at end of discharge 200 cycles charge discharge Battery life with screen saver 15h without screen saver 10h 11 11 3 Dimensions and weight DAS 240 Depth 66mm Width 298mm Height 175mm Weig...

Страница 75: ...nform to IEC61010 1 2010 Pollution degree 2 Power supply by 15 V external block code 207195117 Installation category overvoltage category Measurement input category I 100V overvoltage 500V Other input...

Страница 76: ...3 Accessories and options for DAS240 Transportation briefcase 902408000 Internal battery 902405000 Shunt 50 0 01 0 5W 902406500 Box for logic channels 984400550 Cord for logic channels 902407000 Cord...

Страница 77: ...measurement range between 50 and 50 C with a J thermocouple Max absolute value T 50 C Add 40 C T 40 90 C Corresponding U voltage according to the tables ThJ U 4 726 mV Programmed caliber 10 mV measure...

Страница 78: ...erature but this variation is generally of the second order for the accuracy calculation Voltage of thermocouple mV Slope of the thermocouples V Example At 100 C the slope of thermocouple J is 55 V At...

Страница 79: ...with compensation of cold welding Pt Pl Ps Pm Pl 0 25 C linearization accuracy Ps 0 5 C compensation of cold welding Used caliber 10mV see previous example Accuracy for voltage measurement 0 1 10mV 1...

Страница 80: ...he measured value with the variations of one of the influential variables in the nominal range of use do not exceed C for the position for the magnetic induction with external source and parasite volt...

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