Chauvin Arnoux C.A 6240 User Manual
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Chauvin Arnoux C.A 6240 User Manual

Microhmmeter
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C . A 6 2 4 0
MICROHMMETER
User's manual
E N G L I S H

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Summary of Contents for Chauvin Arnoux C.A 6240

  • Page 1 C . A 6 2 4 0 MICROHMMETER User’s manual E N G L I S H...
  • Page 2 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. WARNING, risk of DANGER! The operator must refer to this user’s manual whenever this danger symbol appears. Equipment protected by double insulation.
  • Page 3 „ Do not immerse the C.A 6240 microhmmeter in water. „ Use connection accessories which have an overvoltage category and service voltage greater than or equal to those of the measuring instrument (50 V Cat III). Use only accessories that comply with safety standards (IEC 61010-2-031).

  • Page 4: Table Of Contents

    CONTENTS 1. PRESENTATION ..................................5 2. BATTERY CHARGE .................................. 7 3. RESISTANCE MEASUREMENT .............................. 8 3.1. Measurement of a very low value ........................... 9 3.2. Repetitive measurements ............................. 10 3.3. Error messages ................................10 4. STORAGE OF RESULTS ................................ 12 4.1 Storing ...................................

  • Page 5: Presentation

    1. PRESENTATION Transfer of data to PC Battery charge X02870 Protecting fuse Connection terminals Choice of range or SET-UP  C.A 6240 MICROHMMETER START/STOP To start or stop the measurements ±I DISPLAY „ Store the measurement Read memory Change of Display current/ „...
  • Page 6 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...

  • Page 7: Battery Charge

    2. BATTERY CHARGE Charge Charge Current battery capacity in %. Charging time: 3 h 30 Start by fully charging the battery before the first use. In the 10 A range, the battery life is approximately 1h20. It is therefore best to charge the battery before starting series of measurements.

  • Page 8: Resistance Measurement

    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.   SET-UP Ω 10mA 400 Ω 2) Set the switch to 400Ω - 10 mA. 10mA Ω...

  • Page 9: Measurement Of A Very Low Value

    The energy accumulated in an inductive component when a measurement is made on it must be released. You must never in any circumstances touch or disconnect the 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.

  • Page 10: Repetitive Measurements

    3.2. REPETITIVE MEASUREMENTS  START/STOP Ω  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 HOLD to the second object to be measured. The measurement restarts automatically.
  • Page 11 If a voltage greater than 20 V is applied between terminals C1 and C2, the fuse HOLD on the front panel of the instrument will > 20 V blow and must be replaced (see §7.1.2). Ω 3.3.2. RANGE OVERSHOOT SET-UP Ω...

  • Page 12: Storage Of Results

    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 ...

  • Page 13: Read Memory

    4.2. READ MEMORY It is necessary first of all to stop the measurement by pressing the START/STOP button.  To change objects. OBJ. TEST To read all tests containing a record. µ Ω  To exit from the read memory function. 4.3.

  • Page 14: Transfer Of Data To Pc

     HOLD OBJ. TEST OBJ. TEST µ Ω START/STOP Automatic recording activated. At each new measurement, the test number is incremented and the measurement is recorded.  To stop automatic recording, press the START/ STOP button. Ω START/STOP 4.6. TRANSFER OF DATA TO PC HX0056-Z X02870 First of all, install the driver of the USB/...

  • Page 15: Other Functions (Set-Up)

    5. OTHER FUNCTIONS (SET-UP) SET-UP SET-UP Ω 10mA Ω 10mA 4000m Ω 100mA 400m Ω Ω 4000µ Ω Charge 5.1. COMPLETE ERASURE OF MEMORY >2s >2s 5.2. PROGRAMMING THE TIME >2s To change >2s To change the hour the minutes 5.3.

  • Page 16: Programming Of Automatic Stopping Time

    5.4. PROGRAMMING OF AUTOMATIC STOPPING TIME >2s To choose automatic power- down select “ON”, if not, choose “OFF”. To adjust the On time: 5, 10, or 15 minutes. >2s 5.5. DISPLAYING THE INTERNAL PARAMETERS OF THE INSTRUMENT >2s Configuration of the instrument Serial number MEMMRCLR...

  • Page 17: Characteristics

    6. CHARACTERISTICS 6.1. REFERENCE CONDITIONS Quantities of influence Reference values Temperature 23 ± 3 °C Relative humidity 45 to 55 % RH Supply voltage 6 V ± 0,2 V External voltage present on the terminals of the resistance zero being tested Inductance of the resistance being tested zero Electric field...

  • Page 18: Influences On The Resistance Measurement

    6.5. INFLUENCES ON THE RESISTANCE MEASUREMENT Variation of the measurement Quantities of influence Range of use Typical Maximum Temperature -10 to + 55 °C 0,1 %/10 °C 0,5 %/10 °C + 2pt Relative humidity 10 to 85 % RH @ 45°C 0,1 % 0,5 % + 2pt Supply voltage...

  • Page 19: Characteristics Of Construction

    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.

  • Page 20: Maintenance

    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.

  • Page 21: Warranty

    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: „...

  • Page 22: To Order

    9. TO ORDER C.A 6240 .................................. P01143200 The C.A 6240 is delivered in a cardboard box with a carrying bag of accessories containing: „ one set of two 10 A Kelvin clips with a 3 m cable, „ one 2 m power cord, „...
  • Page 24 Tel: 01 61 61 9 61-0 - Fax: 01 61 61 9 61-61 Tel: (01) 890 425 - Fax: (01) 890 424 SCANDINAVIA - CA Mätsystem AB USA - Chauvin Arnoux Inc - d.b.a AEMC Instruments Sjöflygvägen 35 - SE 18304 TÄBY 200 Foxborough Blvd. - Foxborough - MA 02035...

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