User Manual - Chauvin Arnoux Group
Contents
1. Cat 2129 91 Fuse set of 5 12 5A 500V 6 3 32 Cat 2129 92 Extra Large Classic Tool Bag Cat 2133 73 Inverter 12Vbc to 120VAc 200 Watt for vehicle use Cat 2135 43 Measurement Result Forms replacement set of two Cat 2129 94 115V Power Gord 5222 pero ren ence eu Cat 5000 14 Order Accessories and Replacement Parts Directly Online Check our Storefront at www aemc com store for availability 6 Micro Ohmmeter Model 6240 CHAPTER 2 PRODUCT FEATURES 2 4 Description The Micro ohmmeter Model 6240 is used to perform low resistance measurements from 5 to 4000 There are six ranges with test currents from 10mA to 10A The front end of the micro ohmmeter employs a four wire Kelvin configu ration which eliminates test lead resistance for a measurement accuracy of 0 2596 A built in circuit filters out AC signals The Micro ohmmeter Model 6240 is packaged in a sealed field case well suited for shop and field use Power is supplied by a long life NiMH battery pack with a built in recharger 110 220V The large easy to read liquid crystal display is 2 25 x 4 00 It displays the value of resistance current or voltage test polarity and battery charge For operator safety and instrument protection the micro ohmmeter is fuse protected at the inputs One fuse accessible from the front panel protect2. Resistance to be measured which is between 5 to 6V The maximum admissible lead resistance level is R V Vx 1 The use of Kelvin probes helps as they eliminate the effect of the lead resistance Rp Micro Ohmmeter Model 6240 17 4 3 3 Test Lead Connection The measurement leads are connected using the four binding posts on the left side of the front panel as shown below Connect the two red leads to terminals C1 and P1 Connect the two black leads to terminals C2 and 2 Any drop in the voltage on the load terminals is measured between the two voltage V leads P1 and P2 The current leads C1 and C2 can deliver current from 10mA to 10A 4 4 Repetitive Measurements 1 Connect the Kelvin clips to the first object Press START STOP 2 Disconnect the clips The measurement stops and result is displayed 3 Connect the clips to the second object The measurement restarts automatically Repeat as necessary 4 After the last measurement press START STOP again AN NOTE This operation is valid only if all of the objects to be measured have substantially the same value and all of the measurements are made in the same range 18 Micro Ohmmeter Model 6240 4 5 Measuring Very Low Resistance When measuring very low resistive values in the Q range the presence of stray DC currents may affect the accuracy of the measurements These currents can be present due to a variety of reasons including chemical or the
3. MICRO OHMMETER 2 4 MODEL 6240 User Manual INSTRUMENTS VESE Ses BSc cS Co Soe Se AVE Statement of Compliance Chauvin Arnoux Inc d b a AEMC Instruments certifies that this instrument has been calibrated using standards and instruments traceable to international standards We guarantee that at the time of shipping your instrument has met its published specifications An NIST traceable certificate may be requested at the time of purchase or obtained by returning the instrument to our repair and calibration facility for a nominal charge The recommended calibration interval for this instrument is 12 months and begins on the date of receipt by the customer For recalibration please use our calibration services Refer to our repair and calibration section at www aemc com Serial Catalog 2129 80 Model 4 6240 Please fill in the appropriate date as indicated Date Received Date Calibration Due Chauvin Arnoux Inc d b a AEMC Instruments INSTRUMENTS www aemc com Table of Contents 1 INTRODUCTION 4 1 1 International Electrical 5 1 2 Definition of Measurement Categories 5 1
4. D European DD MMAYYYY USA MM DDAYYYY Auto Power OFF Set Clock 5 OFF LI ON Delete Tests Power down delay 5 1 15 minutes Read from Instrument Figure 5 6 This setup dialog box also contains five command buttons e Set Clock Programs the computer s time and date into the con figuration of the instrument Delete Tests Displays a dialog box which allows the deletion of selected tests e Write to Instrument Programs the micro ohmmeter using the current settings e Read from Instrument Reads the current configuration of the micro ohmmeter attached via the communications cable e Cancel Closes the Configuration dialog box and brings up the Control Panel Once all of the fields have been configured click on the Write to Instrument button to configure the instrument and close the Configuration dialog box 30 Micro Ohmmeter Model 6240 TIP While connected both the DataView and Micro ohmmeter windows may be open They have similar main menu options To determine which window is active look at the top left corner of the window It will either display DataView or Micro ohmmeter Use the Windows taskbar at the bottom of your screen to access the appropriate window 5 5 Downloading Stored Tests The Download command initiates the transfer of test measurements stored in the instrument To download stored tests perform the follo
5. 3 1 Measurement 17 4 3 2 Connections and 17 4 3 3 Test Lead Connection 18 4 4 Repetitive 18 4 5 Measuring Very Low Resistance 19 4 6 Automatic Recording 20 4 7 Storing Results into 21 4 8 Recalling Results from 22 4 9 Erasing Measurements from 23 4 9 1 Erasing Selected 23 4 9 2 Erasing All 2 2 1 23 B DATAVIEW SOFTWRARE ins caa suii iai iov xm tic cian aon owon cori rear 24 5 1 Installing 2 24 5 2 Connecting the Instrument to your 28 5 3 Opening the Micro ohmmeter Control Panel 29 5 4 Configuring the 30 5 5 Downloading Stored 0111 31 5 6 Saving Exporting Data to a Spreadsheet or PDF File 32 5 6 1 Saving Data to Spreadsheet from Control Panel 32 5 6 2 Exporting Data to a PDF from DataV
6. Tester Model 6470 B 6471 and 6472 Megohmmeter Model 1060 5060 5070 6550 and 6555 Micro Ohmmeter Model 6240 and 6250 Power Energy Logger Model PEL102 and PEL103 Power Meter Model 8220 Power Quality Logger Model PQL100 and PQL120 PowerPad Model 3945 and 3945 B PowerPad II Model 8335 PowerPad Jr Model 8230 Power Clamp Model 407 and 607 Sentinel Data Logger Simple Logger II DTR Model 8510 Figure 5 1 Micro Ohmmeter Model 6240 25 There are several different options to choose from Some options require an internet connection e DataView Version x xx xxxx Installs DataView onto the PC Adobe Reader Links to the Adobe website to download the most recent version of Adobe Reader to the computer Adobe Reader is required for viewing PDF documents supplied with DataView e DataView Updates Links to the online DataView software updates to check for new software version releases Firmware Upgrades Links to the online firmware updates to check for new firmware version releases e Documents Shows a list of instrument related documents that you can view Adobe Reader is required for viewing PDF documents supplied with DataView 6 DataView Version x xx xxxx option should be selected by default Select the desired language and then click on Install 7 Installation Wizard window will appear Click Next 8 To proceed accept the terms of the license agreeme
7. To be able to export the data to a PDF from the Micro ohmmeter Control Panel first go to File gt Create Dataview Report save as a dvb then open the saved dvb file from within DataView and perform the steps below 5 6 2 Exporting Data to a PDF from DataView To export data to a PDF file 1 With a database open go to File Generate PDF 2 n the Print dialog box that appears make sure that PDF XChange 3 0 is selected from the drop down menu then click OK 3 When the PDF is complete the Save As dialog box will appear Choose a location to save it to and click Save NOTE Data can also be exported to a spreadsheet from within DataView by going to File Export to Spreadsheet 32 Micro Ohmmeter Model 6240 CHAPTER 6 TROUBLESHOOTING 6 1 Error Messages 6 1 1 Voltage Present An error message will appear when an external voltage is present on the device being measured e g C1C2 or C1P1 Before a measurement is possible the voltage must be removed from the test object A voltage greater than 20V applied across the C1 C2 terminal will cause the Fuse on the front panel to blow See 87 4 for fuse replacement Micro Ohmmeter Model 6240 33 6 1 2 Overrange The gt symbol indicates an overrange condition Switch to a higher mea surement range and restart the measurement until the gt symbol no longer appears This symbol indicates an overrange 6 1 3 Noisy Measurement The A symbol indicates
8. from Memory Make sure there is no measurement in progress Press the MR button Use the and buttons to select the desired OBJ and TEST Press the MR button again to exit the memory function Use the arrow buttons to change the values of the OBJ and TEST FT Micro Ohmmeter Model 6240 4 9 Erasing Measurements from Memory 4 9 1 Erasing Selected Measurements 1 Press the CLR button 2 Use the and buttons to select the desired OBJ and TEST 3 Press the CLR button for gt 2s to delete the selected record Use the arrow buttons to select the desired OBJ and TEST gt 2s CLR When finished press the CLR button for gt 25 4 9 2 Erasing All Measurements 1 Turn the rotary switch to Set up The default display appears 2 Press for gt 2s ALL will blink 3 Press gt again Fr EE will display 4 Press again for gt 2s All measurements are erased and the screen returns to the default display Micro Ohmmeter Model 6240 23 CHAPTER 5 DATAVIEW SOFTWARE 5 1 Installing DataView DO NOT CONNECT THE INSTRUMENT TO THE PC BEFORE INSTALLING THE SOFTWARE AND DRIVERS NOTE When installing the user must have Administrative access rights during the installation The users access rights can be changed after the installation is complete DataView must be reinstalled for each user in a multi user system USB Flash Drive Install 1 Insert the USB stick into an ava
9. only in the OFF position bAtton the small display and FULL on the main display signifies that charging is complete At this point a low charge current is applied to maintain the battery charge 36 Micro Ohmmeter Model 6240 bAtt shown when instrument is turned on and battery is low There will be a 5 second delay then 4 beeps before the instrument shuts down bAtt shown during high current measurement indicates a low battery condition measurement will be possible on lower current range only Battery Indicator Status Battery Charge C C gt 87 596 n 87 596 C 62 596 n 62 596 C 37 596 E 37 5 lt C lt 12 5 12 5 lt LL Blink C 0 battery Indicator not initialized Automatic shutdown 0 If the instrument is turned on and the battery voltage is gt 5V then the normal use of the device is permitted 7 4 Battery and Fuse Replacement AN NOTE Make sure that no terminals are connected and that the switch is in the OFF position before removing the instrument from the case BATTERY WARNING Replacing the battery causes data loss from memory The battery should be replaced by an authorized repair facility rec ognized by AEMC Instruments See the Repair and Calibration section for return instructions The battery is accessible using a Phillips Head screwdriver to remove the four screws on the bottom side of the case and pullin
10. to 7V 2cts 0 2 V 2cts Series Mode Rejection U AC measured x 50 60Hz measurement Sun Common Mode Rejection 50 60Hz AC 0 to 50 VAC gt 80 dB gt 60 dB Example If the measured resistance is 1mQ and the measurement current is 10A an alternating voltage of 15V RMS in series with the resistance to be measured will induce an error of not more than 296 Power Supply 6V 8 5Ah rechargeable NiMH battery pack Battery Life Range dependent Range Number of measurements 10A 850 1A 3500 100mA 4500 10mA 5000 In Standby or Off battery life 4 to 6 months Established for measurements lasting 5s every 25s 3 2 Mechanical Dimensions 10 70 x 9 76 x 7 17 272 x 248 x 182mm Weight 10 Ibs 4 5kg approx Case Protection ABS plastic polycarbonate watertight to IP54 cover closed water resistant to IP53 cover open Color Safety yellow case with gray faceplate Micro Ohmmeter Model 6240 13 3 3 Environmental Operating Temperature 14 to 132 F 10 to 55 C 10 to 85 RH Storage Temperature 40 to 158 F 40 to 70 C 10 to 90 RH Altitude lt 2000m NOTE For long term storage gt 1 year with the battery installed the stor age range is 4 to 86 F 20 to 30 C 85 RH otherwise the battery will deteriorate For short term storage 1 month the temperature can reach up to 122 F 50 C 3 4 Safety Electrical safety as per EN 610
11. 1 21 66 Measurement current 1 1014A Resistance Value 1 21 4 milli Ohm Resistance Value Tobj 21 4 milli Ohm Resistance Value Tref Comments For Help press FL Connected Figure 5 4 2 To establish a communication link with the instrument go to Instrument Connect in the main menu 3 The Communication dialog box will appear Make sure that the communication port displayed in the dialog box matches the port that the serial cable is plugged into Connection Communications port USB to Optical Serial Cable Communication rate 9500 Instrument model 6240 Figure 5 5 4 Once the proper communication parameters have been speci fied click OK Micro Ohmmeter Model 6240 29 5 4 Configuring the Instrument To configure the instrument perform the following steps 1 Double click the Micro ohmmeter icon on your desktop 2 Go to Instrument Configure from the main menu of the Micro ohmmeter Control Panel NOTE If a connection has not been previously established the Communication dialog box will appear allowing you to select the Communication Port and Instrument Model 3 Once identification is complete the Configuration dialog box will appear on the screen allowing you to configure the Date Format and Auto Power OFF options Micro Ohmmeter Model 6240 Configuration Panel oun mx Date Format
12. 10 1 Ed 2 of 2001 EN 61557 Ed 97 parts 1 and 4 Degree of pollution 2 Protection Measurement CAT III 50V with respect to earth 500V differ ential between terminals and 300V CAT II on the charger input Electromagnetic Compatibility The instrument satisfies the CEM and DBT directives required for the CE marking and product standard EN 61326 1 Ed 97 A1 Ed 98 Emissions in residential environment Immunity in industrial environment Specifications are subject to change without notice 14 Micro Ohmmeter Model 6240 CHAPTER 4 OPERATION NOTE Charge the instrument fully before use 41 Precautions Before Use A Never use test leads or measuring wires if there is any evidence of deterioration insulation split burnt etc Never exceed the safety values indicated in the specifications Never connect the unit to a live circuit Never disconnect the connection wires before the icon disappears from the display 4 2 Instrument Configuration SET UP mode The SET UP mode is used to modify the instrument s configuration This can also be performed by using the DataView software that came with the instrument see 5 To configure the Model 6240 directly from the display turn the rotary switch to the SET UP position The following screen will appear e display order of the parameters that can be modified is Clear all memory see 4 9 2 Time Date Automatic Power Of
13. 3 Receiving Your 5 1 4 Ordering 21 1 2 1 100 004 1 0114 41 6 1 4 1 Accessories Replacement Parts 6 2 PRODUCT 7 2 1 Description rere tte rr tried vene vere 7 2 2 Applications 8 2 3 Key Fealt les c te cet auae cos RR Ru E 8 2 4 Control Features vo 9 2 5 Button FUNCIONS 10 26 Bisplay Symbols ee e eto 11 3 SPECIFICATIONS 12 3 1 12 3 2 13 3 3 Environmental xxu ter den 14 TEES JU lensing 14 4 15 4 1 Precautions Before 056 22 22 20 4 4 00 15 4 2 Instrument Configuration SET UP 15 4 3 Resistance Measurements 16 4
14. agnetic field of lt 40A m INPUT VOLTAGE CHECK Measurement Range 10 0 to 39 99V 40 0 to 399 99V 400 to 499V Resolution 0 01V 0 1V 1V Input Impedance 800kQ Frequency Range DC and 15 3 to 450Hz RESISTANCE Measurement 5 0 to 4 0 to 40 0 to 400 to 4 0 to 40 0 to Range 399910 39 99mO 399 9MQ 3999mO 39 990 399 90 Resolution 1pQ 10pQ 100pQ imo 10mQ 100mo Accuracy 0 25 2ct Measurement 10 2A 1 02A 102mA 10 2mA current 2 0 x 2 296 2 Open voltage 4 to 6V Inductance 0 5H Max 1 With nominal value of 10 2A the measurement current is at least 10A whatever the charge condition of the battery 2 The current is 10mA only up to 3000 If the battery is low it can fall to as low as 8mA VOLTAGE MEASUREMENT INDICATION Measurement 0 01 to 4 0 to 40 0 to 0 40 to 4 0 to Range 3 999mV 39 99mV 399 9mV 3 999V 4 70V Resolution 1uV 10 100uV imV 10mV CURRENT MEASUREMENT INDICATION Measurement 5 0 to 40 0 to 0 40 to 4 0 to Range 39 99mA 399 9mA 3 999A 11 00A Resolution 10 100 1 10mA 12 Micro Ohmmeter Model 6240 Influences on the Resistance Measurement m Variation of the measurement Quantities of Influence Range of use 5 Typical Maximum Temperature 10 to 55 C 0 1 10 C 0 5 10 C 2cts Relative Humidity 10 to 85 RH 45 C 0 1 0 5 2cts Supply Voltage 5
15. amp cloth or sponge Dry immediately after cleaning Avoid water penetration into the electronic module Make sure the micro ohmmeter and all leads are dry before fur ther use Micro Ohmmeter Model 6240 35 7 3 Charging Recharging the Battery AC POWER SELECTION The Model 6240 may be recharged from 110 to 230VAC 50 60Hz The instrument includes a 110V line cord which provides the charging voltage for the rechargeable battery CHARGING THE BATTERY Model 6240 should be charged to a full charge before using it for the first time e Charging to full capacity may take up to 6 hours for a completely discharged battery battery symbol shows as an empty cell the battery needs to be recharged The battery will only charge in the OFF mode Inthe ON mode the charging halts and the battery level indication is shown in the battery symbol to the top left of the display nthe OFF mode indication is as described in the charging indica tor section below Connect the Model 6240 to 110VAC using the power cord provided charg ing starts automatically if the instrument is in the OFF mode NOTE Measurement can be obtained while the power cord is connected but the charging process will be stopped until the instrument is turned OFF again CHARGING INDICATORS OFF Mode bAtt on the small display and on the main display signifies fast charging in progress Where is the percent of battery charge
16. ating the instrument In this manual the symbol preceding instructions indicates that if the instructions are not followed bodily injury installation sample and or product damage may result Risk of electric shock The voltage at the parts marked with this symbol may be dangerous When disposed of this product must be sorted for the recycling of electrical and electronic equipment in accordance with WEEE directive 2002 96 EC 4 1 2 Definition of Measurement Categories CAT Il For measurements performed on circuits directly connected to the electrical distribution system Examples are measurements on household appliances or portable tools CAT Ill For measurements performed in the building installation at the distribution level such as on hardwired equipment in fixed installation and circuit breakers CAT IV For measurements performed at the primary electrical supply lt 1000V such as on primary overcurrent protection devices ripple control units or meters 1 3 Receiving Your Shipment Upon receiving your shipment make sure that the contents are consistent with the packing list Notify your distributor of any missing items If the equip ment appears to be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any damage Save the damaged packing container to substantiate your claim NOTE Charge the instrument fully before use Mic
17. e measurement is recorded 6 Press the START STOP button again to stop automatic recording START STOP 20 Micro Ohmmeter Model 6240 47 Storing Results into Memory Data storage is organized into objects OBJ each of which can contain several tests TEST OBJ corresponds to the object tested and each test corresponds to a measurement made on the object The instrument can store 99 measurements 1 Start and Stop a measurement see 4 3 2 Press the MEM button 3 When the button is pressed the MEM symbol flashes and the small display indicates the first free OBJ TEST number e g 01 01 The main display indicates F r E E Use the button to switch between the OBJ and TEST option then use the button to change the number of the test or object gt 5 When finished press the MEM button for gt 2s The measurement is stored Use the arrow buttons to change the values of the OBJ and TEST 2 When finished press the MEM button for gt 2s 6 If the user selects a memory address that is already occupied aLL appears on the main screen To overwrite the location press the MEM button for gt 2s Micro Ohmmeter Model 6240 21 4 8 22 gt 25 or Indicates address is already occupied Overwrites the Exits without Memory Recording Display shown if memory is full Display shown If memory is empty Recalling Results
18. end and an optical connec tor on the other end thus providing the ability to interface with computers that have USB connectors To connect the instrument to your computer Connect the optical connector end of the cable to the optical communications port on the front panel of the Model 6240 Connect the type A USB end of the cable to an available USB port on your computer The first time this cable is connected to the computer Windows will install the drivers for it Once this has finished the system is ready to communi cate using the DataView software with the micro ohmmeter 28 Micro Ohmmeter Model 6240 5 3 Opening the Micro ohmmeter Control Panel To open the control panel 1 Double click the Micro ohmmeter Icon that was created during installation located on the desktop The Micro ohmmeter Control Panel will open 8 Micro Ohmmeter Control Panel Object Eram File Edit View Instrument Help 3 3 2 a Object User Site Testi Company Company Test2 Operator Contact Test3 Address 1 Address 1 Address 2 Address 2 e City City State State ZIP ZIP Phone Phone Fax Fax email email Micro Ohmmeter Model 6240 Serial s 2194 Measurement Date 5 4 2010 2 04 10 PM Next Test Date Object Object 1 Test Test Test Description Test Range 400 milli Ohm Metal Es Metal Coefficient Measurement Temperature Reference Temperature Measurement voltage
19. f Display of the Internal Parameters e g serial number software version date of last calibration lighting of all segments on display Micro Ohmmeter Model 6240 15 To display and modify parameters To move through parameters press the button e change the displayed parameters or view additional ones press and hold the button modify the parameters use the button accept the changes press and hold the button gt 2s until the display stops blinking 4 3 Resistance Measurements WARNING Before performing the resistance test verify that the sample under test is not energized Clean all surfaces before connecting test leads 2 Connect the two leads to the four terminals then the two Kelvin clips to the object to be tested 3 Set the range selector switch to the desired range for the test If the anticipated resistance is not known begin with the highest range 400Q and successively lower the range selection until adequate resolution is achieved 4 Press the START STOP button to start the measurement NOTE The START STOP needs to be pressed each time the range is changed The range selection may be changed while the instrument is on START STOP 5 Press the START STOP button again to stop the measurement or disconnect one of the Kelvin clips The last measurement made is displayed along with the symbol 16 Micro Ohmmeter Model 6240 NOTE If the measurement was stopped by d
20. g the chassis out from the top FUSE The fuse is located on the front panel between the C1 and P1 input terminals Fuse F1 is a 6 3x32 mm fast acting 12 5A 500V low internal resistance protecting the current source from outside voltages on energized specimens Micro Ohmmeter Model 6240 37 Repair and Calibration To ensure that your instrument meets factory specifications we recommend that it be scheduled back to our factory Service Center at one year intervals for recalibration or as required by other standards or internal procedures For instrument repair and calibration You must contact our Service Center for a Customer Service Authorization Number CSA This will ensure that when your instrument arrives it will be tracked and processed promptly Please write the CSA on the outside of the shipping container If the instrument is returned for calibration we need to know if you want a standard calibration or a calibration traceable to N I S T Includes calibration certificate plus recorded calibration data Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to 1 6 are available NOTE You must obtain a CSA before returning any i
21. iew 32 6 TROUBLESHOOTING 33 6 1 Error 58 8 33 6 1 1 Voltage Present 33 6 1 2 Overa er ie taza ce eee sk d Er HY ER Re d vUa 34 6 1 3 Noisy Measurement eene nter 34 6 1 4 34 7 1 35 FABRI 35 Cleaning inertio erbe ce reg erbe e eas 35 7 3 Charging Recharging the Battery 36 7 4 Battery and Fuse 37 Repair and Calibration 38 Technical and Sales 38 Limited Warratlty it tear esed ee eR eie 39 Warranty uix aie ect iniu 39 Micro Ohmmeter Model 6240 3 CHAPTER 1 INTRODUCTION N WARNING These safety warnings are provided to ensure the safety of personnel and proper operation of the instrument This instrument is protected from accidental voltages of not more than 50V with respect to earth in measurement Cat egory III Do not attempt to perform any tests with this
22. ilable USB port wait for driver to be installed 2 If Autorun is enabled then an AutoPlay window should appear as shown uon 18 DATAVIEW 1 General options Open folder to view files using Windows Explorer e Speed up my system gt sing V ows ReadyBoost View more AutoPlay options in Control Panel 24 D Install 1 PDFXChange 1 Reset IDs J use J Use FT232 Ji Usb2 User Manuals 8 AUTORUNINF 2 DocsEN ini DocsFR ini DocsSP ini Setup exe Setup ini D Upgrades ini 0 UpgradesES ini UpgradesFR ini Micro Ohmmeter Model 6240 NOTE If Autorun is disabled it will be necessary to open Windows Explorer then locate and open the USB stick drive labeled DataView to view the files on the drive 3 In the AutoPlay window select Open Folder to view Files 4 Double click on Setup exe from the opened folder view to launch the DataView setup program i NOTE If installing onto a Vista based computer the User Account Control dialog box will be displayed Select the Allow option to proceed 5 ASet up window similar to the one below will appear Francais Espa ol Select an option from the list below Description rsion 3 08 0004 1 Dataview Update Firmware Upgrades User Manuals Installs the English version of DataView onto this computer This version of DataView supports the following instruments Ground
23. instrument until you have read the user manual Tests are to be carried out on de energized circuits only Never connect the unit to a live circuit Make sure that none of the input terminals are connected and that the switch is set to OFF before plugging in the AC power to recharge the battery of the instrument Make sure the internal battery is fully charged prior to testing If the instrument has been left unused for several months recharge the battery If the case needs cleaning do not use any alcohol or oil based cleaners Preferably use soapy water with a damp cloth or sponge Do not immerse the 6240 micro ohmmeter in water Use connection accessories of which the overvoltage cat egory and the service voltage are greater than or equal to those of the measuring instrument 50V CAT Ill Use only accessories that comply with safety standards IEC 61010 2 031 The test leads and measuring wires must be in good condition and should be replaced if there is any evidence of deterioration insulation split burnt etc Troubleshooting and metrological verification procedures must only be performed by qualified approved personnel or the factory 4 Micro Ohmmeter Model 6240 11 International Electrical Symbols Signifies that the instrument is protected by double or reinforced insulation This symbol on the instrument indicates a WARNING and that the operator must refer to the user manual for instructions before oper
24. isconnecting a Kelvin clip simply connect it to another object to start the next measurement It is not necessary to press the START STOP button 6 To display the voltage on the terminals of the resistance instead of the measurement current press the DISPLAY key so 0015 09 301290 AMINT AMTT AL E C DISPLAY Current results are displayed Voltage results are displayed before pressing DISPLAY button after pressing DISPLAY button 4 3 1 Measurement Readings When testing resistive samples the meter reading will stabilize within the first few hundred milliseconds On inductive loads e g small transform ers the measurement reading may take from several seconds to a few minutes to stabilize and depends greatly on the type of equipment and the impedance of the equipment under test 4 3 2 Connections and Readings The Model 6240 generates a current 1 from the internal voltage source V A voltmeter measures the voltage drop Vy at the Kelvin probe contact points to the resistance to be measured Ry and displays the resistance measurement Rx directly using the formula Ry V l The result is not affected by the other resistances encountered in the current loop Ri Re as long as the total voltage drop induced across Ry remains Rj Unit internal resistance Rf Lead resistance Rc Contact resistance below the voltage supplied by the source
25. lation of the drivers may take a few moments Windows may even indicate that it is not responding however it is running Please wait for it to finish 14 When the drivers are finished installing the Installation Successful dialog box will appear Click on OK 15 Next the Installation Wizard Complete window will appear Click on Finish 16 A Question dialog box appears next Click Yes to read the procedure for connecting the instrument to the USB port on the computer Micro Ohmmeter Model 6240 27 NOTE The Set up window remains open You may now select another option to download e g Adobe Reader or close the window 17 Restart your computer then connect the instrument to the USB port on the computer 18 Once connected the Found New Hardware dialog box will appear Windows will complete the driver installation process automatically Shortcuts for DataView and each instrument control panel selected during the installation process have been added to your desktop NOTE If you connected your instrument to the computer before installing the software and drivers you may need to use the Add Remove Hard ware utility to remove the instrument driver before repeating the process 5 2 Connecting the Instrument to your Computer The Model 6240 is supplied with a USB interface cable Cat 2135 41 necessary for connecting the instrument to the computer This cable is equipped with a type A USB connector on one
26. noise in the measurement The measurement accuracy is not guaranteed This symbol indicates noisy measurement 6 1 4 Overheating Internal overheating can occur if a measurement in the 10A range last for several minutes No measurement is possible until the temperature symbol and tas Hat indication are no longer visible 34 Micro Ohmmeter Model 6240 CHAPTER 7 MAINTENANCE Use only factory specified replacement parts AEMC will not be held responsible for any accident incident or malfunction following a repair done other than by its service center or by an approved repair center 7 1 7 2 Warning N To avoid electrical shock do not attempt to perform any servicing unless you are qualified to do so Do not perform any service while the micro ohmmeter is on any circuit To avoid electrical shock and or damage to the instrument do not get water or other foreign agents into the electronic module Make sure the internal battery is fully charged prior to testing If the instrument has been left unused for several months recharge the battery We recommend recharging the micro ohmmeter every month to ensure a full battery charge when used When replacing the fuse install only the fuse which is a direct replacement Cleaning WARNING Disconnect the instrument from any source of electricity If the case needs cleaning do not use any alcohol or oil based cleaners Preferably use soapy water with a d
27. nstrument Technical and Sales Assistance If you are experiencing any technical problems or require any assistance with the proper operation or application of your instrument please call mail fax or e mail our technical support team Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Boulevard Foxborough MA 02035 USA Phone 800 343 1391 508 698 2115 Fax 508 698 2118 E mail techsupport aemc com WWW aemc com NOTE Do not ship Instruments to our Foxborough MA address 38 Micro Ohmmeter Model 6240 Limited Warranty The Model 6240 is warranted to the owner for a period of one year from the date of original purchase against defects in manufacture This limited warranty is given by AEMC Instruments not by the distributor from whom it was pur chased This warranty is void if the unit has been tampered with abused or if the defect is related to service not performed by AEMC Instruments Full warranty coverage and product registration is available on our website at www aemc com warranty html Please print the online Warranty Coverage Information for your records What AEMC Instruments will do Ifa malfunction occurs within the one year period you may return the instrument to us for repair provided we have your warranty registration information on file or a proof of purchase AEMC Instruments will at its option repair or replace the faulty material REGISTER ONLINE AT www aemc com Warranty Re
28. nt and click Next 9 In the Customer Information window enter a Name and Company then click Next 10 In the Setup Type window that appears select the Complete radio button option then click Next 11 In the Select Features window that appears select the instrument s control panel that you want to install then click Next NOTE The PDF XChange option must be selected to be able to generate PDF reports from within DataView 26 Micro Ohmmeter Model 6240 f DataView InstallShield Wizard a ot want to install ription Megohmmeter support files Power Quality Logger M PowerPad PowerPad II Model 8335 V PowerPad Jr M Sentinel Data Logger M Simple Logger Il 407 and 607 Wattmeter 8220 PDF XChange InstallShield Figure 5 2 12 In the Ready to Install the Program window click on Install 13 If the instrument selected for installation requires the use of a USB port a warning box will appear similar to Figure 5 3 Click OK DataView InstallShield Wizard Do not connect the AEMC USB Instrument or cable until after the installation of the drivers and the DataView software has finished If the AEMC USB Instrument or cable is connected to the computer now then disconnect it from the computer before proceeding Figure 5 3 i NOTE The instal
29. on to be modified CLR Erases the memory 10 Micro Ohmmeter Model 6240 2 6 Display Symbols The display incorporates two lines of characters to display test results as well as a library of symbols to assist the operator in determining conditions at a glance The symbols that can appear are shown in Figure 2 2 A MEMMRCLR E lt gt pex ima ave gt DA 01 0 Vic e lt Figure 2 2 Indicates the measurement is noisy accuracy is not guaranteed Indicates the battery charge condition the segments represent energy indicates that power down is deactivated Not used MEM Displayed measurement about to be stored in memory MR Memory recall CLR Indicates the memory is being erased i Indicates internal overheating 1 Indicates the direction of current Indicates the direction of current Indicates that a measurement has been stopped OBJ First position locator for data stored in memory TEST Second position locator for data stored in memory 1 Not used n H H H Memory utilization indicator AVG Displays average EX Not used gt Indicates an overrange Micro Ohmmeter Model 6240 11 3 1 CHAPTER 3 SPECIFICATIONS Electrical Specifications are given for an ambient temperature of 23 C 3 C rela tive humidity of 45 to 55 supply voltage of 6V 0 2V and m
30. pairs What you must do to return an Instrument for Warranty Repair First request a Customer Service Authorization Number CSA by phone or by fax from our Service Department see address below then return the instrument along with the signed CSA Form Please write the CSA on the outside of the shipping container Return the instrument postage or shipment pre paid to Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Caution To protect yourself against in transit loss we recommend you insure your returned material NOTE You must obtain a CSA before returning any instrument Micro Ohmmeter Model 6240 39 Notes EJ AEMC INSTRUMENTS 10 15 99 MAN 100324 v14 Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 603 749 6434 Fax 603 742 2346 www aemc com
31. rmal EMF in samples made of dissimilar metals You can eliminate the effects of this by reversing the direction of current flow see example below and using the average of forward and reverse readings The presence of AC interference in the sample under test may cause the measured value on the display to fluctuate This interference may become more noticeable in the presence of strong electric fields The effects of this interference may be reduced by twisting the leads around each other 1 Reverse the direction of the current by pressing the button and the instrument displays the average RC Press the DISPLAY button to cycle through the values Micro Ohmmeter Model 6240 19 4 6 Automatic Recording 1 Before making measurements press the AUTO gt 2s button 2 When the button is pressed the MEM symbol flashes and the small display indicates the first free OBJ TEST number e g 01 01 The main display indicates r E E 3 Usethe button to switch between the OBJ and TEST option then use the button to change the number of the test or object 4 When finished press the MEM button for gt 2s Automatic recording is activated the MEM symbol flashes Use the arrow buttons to change the values of the OBJ and TEST O MEM When finished press the MEM button for gt 2s 5 Press the START STOP button to begin measuring At each new measurement the test number is incremented and th
32. ro Ohmmeter Model 6240 5 1 4 Ordering Information Micro ohmmeter Model 6240 Cat 2129 80 Includes extra large tool bag set of two 10ft Kelvin clips 10A Hippo optical USB cable US 115V power cord one pad of measurement results forms two spare fuses 12 5A NiMH rechargeable battery pack and USB stick supplied with product user manual and DataView software 1 41 Accessories and Replacement Parts Kelvin clips 10A Hippo 10 ft color coded leads with spade lug 8 Cat 1017 84 Kelvin clips 10A Hippo 20 ft color coded leads with spade lug Cat 2118 70 Kelvin Probes 1A Spring Loaded 10 ft with 4mm banana plug termination includes set of 5 fork terminals Cat 2118 73 Kelvin Probes 1A Spring Loaded 20 ft with 4mm banana plug termination includes set of 5 fork terminals Cat 2118 74 Kelvin Probes Pistol Grip 10 ft 10A Spring Loaded Cat 2118 75 Kelvin Probes 10 ft 10A Spring Loaded Cat 2118 77 Kelvin Clips 10 ft 1 10A sss Cat 2118 79 Kelvin Clips 20 ft 1 10 3 Cat 2118 80 Thermo Hygrometer Model 846 Cat 2121 24 Optical USB Cat 2135 41 Replacement Battery 6 5V 8 5
33. s against stored energy in inductive loads Enhanced internal circuitry protects against possible inductive kickback when the current is shut off A built in thermal switch protects the micro ohmmeter against overheating on the 10A range when in continuous use Micro Ohmmeter Model 6240 7 2 2 Applications Some of the more popular and most frequent uses of the micro ohmmeter are in applications for 2 3 Checking metallic coating resistance especially in aeronautics Ground connections and continuity measurement Resistance measurements on motors and small transformers Contact resistance measurements on breakers and switches Component measurement Electrical cable resistance measurement Mechanical bond tests Wire to terminal connections Aircraft and rail bonds Key Features Measures from 5 to 4000 Test current selection from 10mA to 10A Manual temperature compensation with DataView software Front panel polarity reverse function Stores up to 99 test results Operator safety by automatic discharge of residual charge on the equipment under test Instantaneous continuous or multiple test operation Auto store of multiple test results Internal rechargeable batteries conduct up to 850 10A tests A built in battery pack recharger recharges the batteries by connecting to the AC line 110V 230V 50 60Hz using a standard line cord 4 Wire measurement with automatic compensation of undesirable voltages and lead re
34. sistance Large multi function backlit display Direct display of the measurement with units range and test current Rugged sealed case Micro Ohmmeter Model 6240 2 4 Control Features START STOP MICRO OHMMETER MODEL 6240 Figure 2 1 Kelvin input terminals AC line recharging receptacle Output fuse 12 5A 500V 6x32mm Large multi line backlit liquid crystal display see 2 6 Optical interface connector for connection to a computer Range selection switch Start Stop button o Program function buttons see 5 2 5 Micro Ohmmeter Model 6240 9 2 Button Functions MEM Stores the measurement at an address identified by an object number 0BJ and a test number TEST Two presses on this button are required one to select the location use the A and gt buttons to change the location and another to store the measurement MR Retrieves stored data except for the OFF and SET UP positions this function is independent of the selector setting of the switch Data is viewed using the A and gt buttons xl Reverses the direction of the current and displays the average DISPLAY Displays the current or voltage on the terminals AUTO gt 2s Activates automatic recordings A Used in the SET UP and memory mode selects a function or incre ments a flashing parameter Used in the SET UP and memory mode accesses the functi
35. wing steps 1 Select the download command either from the Instrument menu or the Download button 2 The software will build a list of tests stored in the instrument and the Select Tests dialog box will appear allowing you to select which tests to download Select Tests S Select tests to download Object 1 Test 1 Download Object 1 Test 2 Object 1 Test 3 Object 1 Test 4 Deselect All Figure 5 7 3 Highlight the desired tests using the Shift or Ctrl keys and select the Download button NOTE For additional help on using the software use DataView s Help Menu which is located on the menu bar Micro Ohmmeter Model 6240 31 5 6 Saving Exporting Data to a Spreadsheet or PDF File Measurement values stored in a database can be saved to a spreadsheet csv file which can be opened in Microsoft Excel or exported to a PDF file which can be opened using free Adobe Reader software NOTE Exporting to a PDF file can only be performed from within DataView itself not the Micro ohmmeter Control Panel 5 6 1 Saving Data to a Spreadsheet from the Control Panel To save data to a spreadsheet 1 With a database open go to File gt Save As 2 n the Save As dialog box that appears choose a location to save the file from the Save in drop down menu 3 Select CSV Comma delimited from the Save as type drop down menu then click Save NOTE
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