CA 6240 - Chauvin Arnoux
Contents
1. 61 Reterenc ec Le de 6 2 Characteristics of the resistance measurements 6 3 Characteristics of the voltage measurements on the terminals of the resistance 17 6 4 Characteristics of the measurements of the current flowing in the resistance measured 17 6 5 Influences on the resistance measurement assisia airu aar 18 6 6 Tee me 18 6 7 ENVIFONMEN Keele EE 18 6 8 CharacteniStics Of COMStIUCTION a iter 19 6 9 Contormity to International standards EE 19 6 10 Electromagnetic compatibility Re be FX ata ARE Rud ng Rada 19 7 igi lece M 20 1 1 a 20 Ke TEE 20 8 WARRANTY icisiaici nanc caue ecu cacesteuancisecduceecudesdaqenisduaden susavduedsssaueqesdascevansuelsdunersdveasstusdeanddeys Cu aua RR 21 LNIeXe illt M M 222. of A the instrument Serial number A um Gett 2504 288885 Ann SH DD DIV gt 2s E ECL E imo Software version Date of last calibration Lighting of all segments of the display unit 6 CHARACTERISTICS 6 1 REFERENCE CONDITIONS Quantities of influence Reference values Relative humidity 45 to 55 RH Supply voltage 6V 0 2V External voltage present on the terminals of the resistance zero being tested Inductance of the resistance being tested 6 2 CHARACTERISTICS OF THE RESISTANCE MEASUREMENTS There must be no voltage on the element to be measured Measurement rande 5 4 00 40 0 400 4 00 40 0 9 3999 39 99 399 9 mt 39 99 Q 399 9 Q 102 A 296 1 1 02 A 296 102 mA 296 10 2 mA 296 2 No load voltage 4to6V 1 With a nominal value of 10 2 A the measurement current is at least 10 A whatever the charge condition of the battery 2 The current is 10 mA only up to 300 If the battery is low it can fall to as low as 8 mA 6 3 CHARACTERISTICS OF THE VOLTAGE MEASUREMENTS ON THE TERMINALS OF THE RESISTANCE MEASURED Measurement range 0 010 4 00 40 0 0 400 4 00 9 3 999 mV 39 99 mV 399 9 mV 3 999 V 4 70 V 6 4 CHARACTERISTICS OF THE MEASUREMENTS OF THE CURRENT FLOWING IN THE RESISTANCE MEASURED Measurement range 5 00 2006 0 400 4 00 39 99 mA 399 9 mA 3 999 A 11 00 A 6
3. In the 10 A range the battery life is approximately 1h20 It is therefore best to charge the battery before starting series of measurements Charging must be done between 0 and 40 C The battery life of the instrument depends on the range To display it before making the measurement b DISPLAY Remaining battery life d m m l E m m m Average battery life according to range l L OFF Charge Following long term storage the battery may be completely discharged In this case the first charge may last several hours The capacity of the battery and therefore the battery life of the instrument will be temporarily reduced The battery will recover its initial capacity after 5 recharging cycles 3 RESISTANCE MEASUREMENT 1 Connect the 2 cables to the 4 measurement terminals then the 2 Kelvin clips to the object to be tested which must not be live mr 1 uU 2 Set the switch to 4000 10 mA 4000 10mA If the measurement is too low turn the switch to the next lower range and restart the measurement Continue until the display shows at least 3 digits 3 Start the measurement by pressing the START STOP button START STOP 4 Press the START STOP button again to f stop the measurement START STOP or disconnect one of the 2 clips The energy accumulated in an i
4. LL rm START STOP START STOP START STOP Connect the clips to the first object to be measured The measurement starts automatically Withdraw the clips the measurement stops and the result is displayed Connect the clips to the second object to be measured The measurement restarts automatically And so on After the last measurement press the START STOP button again If there is an external voltage on the device to be measured the START STOP button has no effect the measurement is impossible Remove the voltage to make the measurement If a voltage greater than 20 V is applied between terminals C1 and C2 the fuse on the front panel of the instrument will blow and must be replaced see 7 1 2 3 3 2 RANGE OVERSHOOT nm 1 If the instrument indicates a range overshoot gt symbol turn the switch to the next higher range and restart the measurement Continue for as long as the range overshoot message is displayed ART a mm md gt m l ant gt 4 T e 3 3 3 NOISY MEASUREMENT AN imr nium O he tata The A symbol indicates that the measurement is noisy and that its accuracy is ae ae os not guaranteed JL ott aw AL uo 3 3 4 OVERHEATING A Wi If a measurement in the 10 A range E 2 g lasts several minutes it causes intern
5. sor I 22 G2 SPANOS m Ee DEE Ee EE Eer 22 1 PRESENTATION Battery charge X02870 lt gt nm Transfer of data to PC CH oo O Protecting fuse Connection terminals Choice of range or SET UP START STOP To start or stop the measurements MEM MR zl DISPLAY W Store the measurement Read memory Change of Display current W Automatic recording direction of current voltage CLR Erasure of the last measurement recorded A and gt during the memory and set up functions The C A 6240 microhmmeter is a portable measuring instrument intended for the measurement of very low resistance values It is enclosed in a site case and powered by a rechargeable battery with a built in charger Measurement functions resistance Controls 8 position switch 5 key keypad and 1 START STOP button Display LCD display unit 100 x 57 mm back lit having 2 simultaneous digital display levels Representation of the display unit A DU ot DH DDD SF VUL LL 29888 ave gt IV E Ki LU UD indicates flashing 2 BATTERY Charging time 3 h 30 Start by fully charging the battery before the first use CHARGE E LLHLL DIE AU 7 ba Current battery capacity in LL T iF am re Lr
6. to 50 V with respect to earth in category Ill Failure to observe the safety instructions may result in electric shock fire explosion and destruction of the instrument and of the installations The operator and or the responsible authority must carefully read and clearly understand the various precautions to be taken in use Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument If you use this instrument other than as specified the protection it provides may be compromised thereby endangering you W Donotusethe instrument on conductors likely to be connected to line power or on earth conductors that are not disconnected W Do not use the instrument if it seems to be damaged incomplete or poorly closed W Before each use check the condition of the insulation on the leads housing and accessories Any item of which the insulation is deteriorated even partially must be set aside for repair or scrapping Check that the switch is set to OFF before plugging in the mains cord to recharge the battery of the instrument W Respect the value and type of the fuse to avoid damaging the instrument and cancelling the warranty W Setthe switch to OFF when the instrument is not in use Do immerse the 6240 microhmmeter in water Use connection accessories which have an overvoltage category and service voltage greater than or equal to those of the measuring instrume
7. 46 8 50 52 68 00 Fax 46 8 50 52 68 10 SCHWEIZ Chauvin Arnoux AG Moosacherstrasse 15 8804 AU ZH Tel 044 727 75 55 Fax 044 727 75 56 CHINA Shanghai Pujiang Enerdis Instruments Co Ltd 3 Floor Building 1 N 381 Xiang De Road Hongkou District 200081 SHANGHAI Tel 86 21 65 21 51 96 Fax 86 21 65 21 61 07 ESPANA Chauvin Arnoux Ib rica S A C Roger de Flor 293 1a Planta 08025 Barcelona Tel 90 220 22 26 Fax 93 459 14 43 MIDDLE EAST Chauvin Arnoux Middle East P O BOX 60 154 1241 2020 JAL EL DIB Beirut LEBANON Tel 01 890 425 Fax 01 890 424 USA Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Blvd Foxborough MA 02035 Tel 508 698 2115 Fax 508 698 2118 http www chauvin arnoux com 190 rue Championnet 75876 PARIS Cedex 18 FRANCE T l 33 1 44 85 44 85 Fax 33 1 46 27 73 89 info chauvin arnoux fr Export T l 33 1 44 85 44 38 Fax 33 1 46 27 95 59 export chauvin arnoux fr
8. 5 INFLUENCES ON THE RESISTANCE MEASUREMENT Ca Variation of the measurement Quantities of influence Range of use Typical 10 to 55 C 0 1 96 10 C 0 5 96 10 C 2pt Relative humidity 10 to 85 RH 45 C 0 5 96 2pt vue mode rejection 50 60 U AC Rmeasured x 2 1pt Hz 1 measurement ca mode rejection 50 60 0 to 50 V AC gt 80 dB gt 60 dB 1 Example If the measured resistance is 1 mO and the measurement current is 10 A an alternating voltage of 1 mV RMS in e with the resistance to be measured will induce an error of not more than 2 6 6 POWER SUPPLY The instrument is powered by a rechargeable 6 V 8 5Ah NiMH battery pack This has many advantages W long life with small size and weight W the possibility of recharging your battery rapidly avery small memory effect you can recharge your battery rapidly even if it is not fully discharged without reducing its capacity protection of the environment no polluting materials such as lead or cadmium The NiMH technology allows a limited number of charging discharging cycles The number depends on the conditions of use and on the charging conditions Under optimum conditions the number of cycles is 200 The instrument has 2 charging modes W rapid charging the battery recovers 90 of its capacity in 3h W maintenance charging this mode cuts in when the battery is very low and at the end of rapid charging The battery life depends on the rang
9. GB POWs COPD RU P01295253 DEE OT 2 do bl probe LIPS dem P01101782 Set Of 2 miniature ET in Bee P01101783 WS riiciur dnieniyelte ti AT E NEE P01156301Z Optical RS COMMUNICATION Cable tore nk ein eec eura da ENEE dee P01295252 9 2 SPARES Set of 10 FF 12 fuses 5 A 500 V 6 332 isse ninth neaperanta 2a pa KR aae upasi eR P01297091 Set of two 10 A Kelvin clips with 3m cable i retinent ced eto aae ed cube eed nc Eo HAE DER Ra soe o PA Run P01101794 2P EURO POwer Cond 2 MONG PPP cm P01295174 Standard E M P01298066 Optical USB communication cable dt De etra be vet tv veru rese YA cline dina ea HX0056 Z GROUP CHAUVI ARN N OUX 11 2014 Code 692008C02 Ed 1 DEUTSCHLAND Chauvin Arnoux GmbH StraBburger Str 34 77694 Kehl Rhein Tel 07851 99 26 0 Fax 07851 99 26 60 UNITED KINGDOM Chauvin Arnoux Ltd Unit 1 Nelson Ct Flagship Sq Shaw Cross Business Pk Dewsbury West Yorkshire WF12 7TH Tel 01924 460 494 Fax 01924 455 328 ITALIA Amra SpA Via Sant Ambrogio 23 25 20846 Macherio MB Tel 039 245 75 45 Fax 039 481 561 OSTERREICH Chauvin Arnoux Ges m b H Slamastrasse 29 2 4 1230 Wien Tel 01 61 61 9 61 0 Fax 01 61 61 9 61 61 SCANDINAVIA CA Matsystem AB Sj flygv gen 35 SE 18304 TABY Tel
10. C A 6240 MICROHMMETER CHAUVIN ARNOUX User s manual CHAUVIN ARNOUX GROUP Thank you for purchasing a C A 6240 microhmmeter To obtain the best service from your instrument read this user manual carefully comply with the precautions for use AN WARNING risk of DANGER The operator must refer to this user s manual whenever this danger symbol appears n Equipment protected by double insulation l Earth C The CE marking indicates conformity with European directives in particular LVD and EMC The rubbish bin with a line through it indicates that in the European Union the product must undergo selective disposal in compliance with Directive WEEE 2002 96 EC This equipment must not be treated as household waste Definition of measurement categories W Measurement category IV corresponds to measurements taken at the source of low voltage installations Example power feeders counters and protection devices W Measurement category Ill corresponds to measurements on building installations Example distribution panel circuit breakers machines or fixed industrial devices Measurement category Il corresponds to measurements taken on circuits directly connected to low voltage installations Example power supply to electro domestic devices and portable tools PRECAUTIONS FOR USE This device is compliant with safety standard IEC 61010 2 030 and the leads are compliant with IEC 61010 031 for voltages up
11. al l g L overheating making all measurements A impossible It is then necessary to wait for the instrument to cool before resuming the measurements Q 4 STORAGE OF RESULTS Data storage is organised 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 100 measurements 4 1 STORING ZA g Once the measurement is n in g over it can be recorded OBI TEST Press the MEM key AC Z Z IIC L rree inm The instrument proposes the first free location in g memory If it is acceptable execute a long press on gt 25 H n the MEM key E 7 Cond C o D Es 4 m l l SES oe z m wm L 3 mem ju eme LA Tu To change the number of the test or of the object a C gt a use the arrows Lr TT 171 1 HEED 7 OBJ TEST MEM d MIME If the location chosen is already occupied the instrument so indicates But it is possible to overwrite the old measurement gt 25 4 D with the new one C KH ILL MEM anything press the MEM key ur Mew 4905 O PORT Sara Br To exit from the function wit
12. es used Number of measurements 1 10A range 850 1Arange 3 500 100 mA range 4 500 10 mA range 5 000 Instrument on standby or off battery life 4 to 6 months 1 established for measurements lasting 5s every 25s 6 7 ENVIRONMENTAL CONDITIONS Use indoors or outdoors Range of use 10 to 55 C 10 to 85 RH Storage without battery 40 to 70 C 10 to 90 RH Altitude lt 2000 m Degree of pollution 2 For long term storage 2 years with the battery conditions must not depart from the range 20 to 30 C and 85 RH otherwise the battery life will be degraded For short term storage 1 month the temperature can reach 50 C 6 8 CHARACTERISTICS OF CONSTRUCTION Overall dimensions of the instruments L x W x H 273 x 247 x 176 mm Mass approximately 4 5 kg IP 53 per NF EN 60529 IK 04 per NF EN 50102 6 9 CONFORMITY TO INTERNATIONAL STANDARDS Electrical safety as per EN 61010 1 Measurement according to EN 61557 parts 1 and 4 Safety level categories measurement category Ill 50V with respect to earth 500V differential between terminals and 300V cat Il on the charger input 6 10 ELECTROMAGNETIC COMPATIBILITY Emissions in a residential environment and immunity in an industrial setting compliant with EN 61326 1 7 MAINTENANCE AN Except for the fuse the instrument contains no parts that can be replaced by personnel who have not been specially trained and accredited Any unauthorized repair or replace
13. hout recording MEM 4 2 READ MEMORY It is necessary first of all to stop the measurement by pressing the START STOP button To change objects gt 4 jeg f C MR 4 3 ERASE MEMORY To erase a record read memory or not gt CLR i ur AE 20 A bo Lt Q Use the arrows to select the test to be erased To read all tests containing a record The complete erasure of the memory is described in section 5 1 4 4 FURTHER INFORMATION MR Zn H J Memory empty 4 5 AUTOMATIC RECORDING gt 25 OBL TEST AUTO To exit from the read memory function gt 25 CLR MR d AE af LEE CLR H LS hh m gt E DM OBJ TEST Kk G Memory full gt 4 To choose the start location for recording gt 25 MEMZ d nant d HL f L LC OBJ TEST AMO START STOP 4 Ju Automatic recording activated At each new measurement the test number is incremented and the measurement is recorded 1 g To stop automatic recording press the START A STOP button START STOP 4 6 TRANSFER OF DATA TO PC CD C HX0056 Z Zeg mS e F
14. irst of all install the driver ofthe USB serial optical adapter HX0056 Z Fichier Edition Affichage Favoris Outils Pr c dente CR Reche Micro Ohmmeter Adresse e EA Transfer 2 DistFile cab elinstmsi exe tlinstmsiw exe jl Microhm View V1 0 msi EI readme txt Pais Then install the Micro Ohmmeter Transfer application To use Micro Ohmmeter Transfer refer to the help software as explained in readme txt function 5 OTHER FUNCTIONS SET UP gt 2s Ur w LL peas V Leg Ki LI LI Vly mo a pru mo SA g MEM CLR gt 28 gt 28 the minutes gt 2s 4 4 gt 2s To change the To change the MEM MEM al ot E LC 2 o Es D c bal 5 1 COMPLETE ERASURE OF MEMORY 5 2 PROGRAMMING THE TIME 5 3 PROGRAMMING THE DATE To choose the date format ddmm European mmdd USA To change the date 4 4 5 4 PROGRAMMING OF AUTOMATIC STOPPING TIME gt 2s Em Se To choose automatic power down select ON if not choose OFF To adjust the On time 5 10 or 15 minutes GHH 5 5 DISPLAYING THE INTERNAL PARAMETERS OF THE INSTRUMENT i al AUC T
15. ment of a part by an equivalent may gravely impair safety 7 1 SERVICING 7 1 1 RECHARGING THE BATTERY Ng e 25 Z Recharge the battery see 2 The battery must be replaced by Manumesure by a repairer approved by Chauvin Arnoux Only fit the battery recommended by the manufacturer Replacing the battery does not cause a loss of the data in memory However the date and time must be reprogrammed see 5 2 and 5 3 7 1 2 REPLACEMENT OF THE FUSE FF 12 5 A 500 V 6 3 x 32 mm 20 kA 7 1 3 CLEANING Use a soft cloth dampened with soapy water Rinse with a damp cloth and dry rapidly with a dry cloth or forced air Do not use alcohol solvents or hydrocarbons 7 1 4 METROLOGICAL CHECK Like all measuring or testing devices the instrument must be checked regularly This instrument should be checked at least once a year For checking and calibration contact one of our accredited metrology laboratories information and contact details available on request at our Chauvin Arnoux subsidiary or the branch in your country 7 1 5 UPGRADING THE SOFTWARE OF THE INSTRUMENT With a view to providing at all times the best possible service in terms of performance and technical upgrades Chauvin Arnoux invites you to update the embedded software of the device by downloading the new version available free of charge on our web site Our site http www chauvin arnoux com Sign in and
16. nductive component when a measurement is made on it must be released You must never in any circumstances touch disconnect measurement leads until you have stopped making the measurement and waited at least ten seconds for all of the energy in the item tested to be dissipated Failure to observe this precaution may result in the production of an arc potentially hazardous for both the instrument and the operator In both cases the last measurement made is displayed along with the symbol 3 1 MEASUREMENT OF A VERY LOW VALUE n 1019 Oo 12095 START STOP F AL E f DISPLAY 1 rma g Gage De A Q 3505 START STOP al al LI aly Q If the measurement is stopped by the disconnection of a clip simply connecting it to another object starts another measurement with no need to press the START STOP key To display the voltage on the terminals of the resistance instead of the measurement current press the DISPLAY key Reverse the direction of the current by pressing the l key and the instrument displays the average R l 2 This serves to eliminate any thermoelectric effect To display the values R l and R l press the DISPLAY key 3 2 REPETITIVE MEASUREMENTS E H UO LL CL a Ar af LE 3 3 ERROR MESSAGES 3 3 1 PRESENCE OF A VOLTAGE o L he Meet
17. nt 50 V Cat III Use only accessories that comply with safety standards IEC 61010 2 031 Attach one of the 5 specifications labels with your appropriate language on the inside of the lid CONTENTS 1 eR 5 2 glide ici 7 3 RESISTANCE MEASUREMENT m 8 3 1 Measurement Of a very low value 2 eat Eed 9 3 2 Repetitive measuremients 5 o ee eee i 10 MESSAGES MC 10 4 STORAGE OF RESULTS c 12 4 1 12 4 2 Read NR 13 4 3 Erase MOMONY E 13 AA ln ele enn ET 13 4 5 Automatic recording EE 13 4 6 Transfer ot in ae eee 14 5 OTHER FUNCTIONS 5 EEeEEEen 15 5 1 Complete erasure EE 15 5 2 Programming the tme ET 15 53 Progr mmMmNg de EE 15 5 4 Programming of automatic stopping nnne nnne nennen nnne nennen ner nnne enne nnns 16 5 5 Displaying the internal parameters of the Instrument 16 6 CHARACTERISTICS lt
18. open your account Then go to Software support space then Freely available software then C A 6240 Connect the device to your PC using the USB cord provided 7 2 REPAIR For all repairs before or after expiry of warranty please return the device to your distributor 8 WARRANTY Except as otherwise stated our warranty is valid for twelve months starting from the date on which the equipment was sold Extract from our General Conditions of Sale provided on request The warranty does not apply in the following cases W Inappropriate use of the equipment or use with incompatible equipment W Modifications made to the equipment without the explicit permission of the manufacturer s technical staff W Work done on the device by a person not approved by the manufacturer W Adaptation to a particular application not anticipated in the definition of the equipment or not indicated in the user s manual Damage caused by shocks falls or floods 9 TO ORDER GA 6240 eee nad die buen tie ined eee irre ea eee acne Pa P01143200 The C A 6240 is delivered in a cardboard box with a carrying bag of accessories containing W one set of two 10 A Kelvin clips with a 3 m cable one2 m power one optical USB communication cable W Micro Ohmmeter Transfer software simplified operating manuals 1 per language one user manuals on CD ROM 1 file per language 9 1 ACCESSORIES
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