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BALLANTINE LABORATORIES, Inc.

MODEL 3207 MICRO-OHM METER

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Summary of Contents for 3207

Page 1: ...3207 DIGITAL MICRO OHM METER Ballantine Laboratories Inc www ballantinelabs com e mail sales ballantinelabs com 312 Old Allerton Road Annandale New Jersey 07927 USA Phone 908 713 7742 Fax 9083 713 7743 90 10353 5 November 2012 ...

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Page 3: ...n the company s limited warranty accompanying delivery of products The company reserves the right to change the warranty and service policy set forth in such limited warranty or otherwise at any time without further notice and without liability to purchaser or to any other person by reason of any such change unless considered unenforceable or unlawful under applicable law i All implied warranties ...

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Page 5: ...sed in calibrating Ballantine products are standardized bysystematicreferencetoNIST traceablestandards REFERENCE STANDARDS DC 10mV 750V 0 002 0 003 20Hz 50kHz 0 5V 500V 0 004 20Hz 10MHz 0 5V 100V 0 05 DC 30MHz 0 5V 100V 0 35 DC 700MHZ 10uV 0 5V 1 NIST 10MHz 1000MHz 1V 300V 1 NIST Ballantine s Quality Assurance program satisfies the requirements of MIL I 45208 WORKING STANDARDS STANDARD RESISTORS B...

Page 6: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 6 ...

Page 7: ...Installation 19 3 2 Power requirement 19 3 3 Bench Mounting 20 3 4 Using Test Leads 21 3 5 Zeroing the Instrument 21 3 6 Pulse mode operation 21 3 7 Continuous mode operation 22 3 8 Precaution to be taken for various types of measurement 22 SECTION 4 MAKING MEASUREMENTS 24 4 1 Making Measurement 24 4 2 Computer Interfacing 26 SECTION 5 CARE AND MAINTENANCE 28 5 1 Care Maintenance 28 5 2 Replacing ...

Page 8: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 8 Figure 1 1 Model 3207 Digital Micro Ohmmeter Shown with optional Kelvin Clips ...

Page 9: ... FOR ZERO ADJUSTMENT 1 5 INSTRUCTION MANUAL 1 6 RS 232 CABLE 1 7 ANY OPTIONS AS PER CUSTOMER S ORDER IMPORTANT NOTICE Immediately upon receipt the product should be carefully examined WITHOUT DELAY to ensure that no damage has occurred in transit If mechanical or electrical damage is noticed the insurance underwriters the carriers and ourselves must be notified WITHIN TEN DAYS of receipt of the pr...

Page 10: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 10 ...

Page 11: ...g instrument leading to simple speedy and accurate measurements 1 2 Features Important features of the micro ohm meter model 3207 includes 1 Accuracy 0 5 5dgts for 2 mΩ 0 05 5dgts for other ranges 2 Pulse Mode operation 3 Digital 4 digit LED direct reading instrument with0 1μΩ resolution 4 Operating on 115V 60Hz AC mains 5 4 Wire measurement method to avoid lead resistance 6 Easy to operate soft t...

Page 12: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 12 ...

Page 13: ...he resistance under test 6 ZERO adjust ZERO adjust preset is accessible through the front panel and is used to zeroing the initial reading on display 7 V V Input terminals used to measure voltage across the resistance being measured 8 mΩ Ω Indicating selection of mΩ Ω function 9 OPER STDBY OPERATE mode when LED ON ZERO adjust mode STAND BY when LED OFF 10 LED DISPLAY 4 digit LED display 11 LED BAT...

Page 14: ...e of transformer winding Barrater resistor contact resistance of relay LT switch gear contact resistance P N 85 60288 0 4 Test lead with Heavy Duty Alligator clip This lead is useful to measure resistance of transformer winding coils motor winding copper foils etc P N 85 60199 1 5 Test Lead with Gold Plated Kelvin Clip To measure small size resistors To measure resistance of transformer winding co...

Page 15: ...r 220VAC as ordered or from the internal rechargeable battery when AC Mains supply is absent In this option the instrument has an LED on the front panel that will be OFF when the unit operates on AC Mains and will turn ON when the unit operates on battery see the Figure 1 7 1 The unit can operate for minimum 1 hour continuously at 1A before requiring recharging To recharge the battery simply conne...

Page 16: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 16 Figure 1 7 1 Ballantine 3207 05 Micro Ohm Meter with Battery Option ...

Page 17: ...posed wiring connections test leads tips or any live circuit conductors when attempting to make measurements 2 2 Safety Symbol and Terms Indicates read the Instruction Manual carefully before operating the instrument to avoid damage to the instrument as well as injury to the operators Terms The WARNING heading used in this manual indicates precautions to be followed in order to avoid injury or fat...

Page 18: ...pecification Use only manufacturer supplied typical Leads for typical application as referred in this manual Always turn off all power from the resistance under test Do not connect the current or voltage leads of the instrument to any carrying source since this may result in damage to the instrument and void the warranty The instrument should be operated from an AC power source with its neutral at...

Page 19: ... requirement The instrument requires Single Phase 115V 60Hz AC mains supply with proper grounding Warning The instrument is provided with a three terminal power cord which will ground the case when connected to a three terminal grounding outlet If a grounding outlet is not available an adapter must be used which provides a good grounding connection Caution Use the specified AC mains voltage otherw...

Page 20: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 20 FIG 3 1 ...

Page 21: ...oing otherwise it may damage the adjustment and void the warranty 3 6 Pulse Mode Operation NOTE The Trigger switch shall be operated momentarily In this mode current through the resistor is supplied only for a short duration whenever the trigger switch is pressed and the reading is stored until the next measurement cycle is initiated This results in minimum heating of the resistance under test PUL...

Page 22: ...istor in circuit otherwise you may get erroneous readings and also damage the instrument Test lead with gold plated Kelvin clips are recommended for such measurements HV transformers Caution Discharge the inductors before making connections for measurement Ensure firm contact during connections to avoid HV generated Back EMF due to the interruption of current through the inductance of the winding ...

Page 23: ...ue to limited compliance voltage and current the time required to obtain a steady reading is substantial when making winding resistance measurements of transformers of capacities higher than 8 MVA However when fast response measurements are to be made on high inductance loads this instrument is not recommended NOTE Due to its high gain the Instrument may give 3 to 4 counts flicker on 2 milliohm ra...

Page 24: ...ng of the instrument and if done gives erroneous readings Ensure Zeroing of the instrument for CONT mode only Caution Always turn OFF the power from the resistance under test Do not connect the current or voltage leads of the instrument to any line circuit since this may result in damage to the instrument and void the warranty Make the connections to the Device Under Test Refer Fig No 4 1 by using...

Page 25: ...IES Inc MODEL 3207 MICRO OHM METER 25 CONNECTION OF RESISTANCE UNDER MEASUREMENT Rx Res Under measurement RL Lead resistance R Measured value R Rx Rx I I RL1 RL2 V V I Rx I Rc Contact resistance RC1 RC2 V V Rx R Rx I I V V ...

Page 26: ...he 9 Pin connector of the PC Serial Port 3 Pin Number 5 is Ground pin which will mate with Pin Number 5 of the 9 Pin connector of the PC Serial Port To install HyperTerminal on your PC Click on Start Select Setting Select Control Panel Click on Add Remove Programs Select Windows Setup Double Click on Communication Select HyperTerminal Click on OK To Run HyperTerminal Click on Start Select Program ...

Page 27: ...R D 64 OR 44 Decrements the range r OR R 72 OR 52 Reads the range selected returning the ASCII value from 0 to 6 of the range t OR T 74 OR 54 Reads the 5 digit Max count o OR O 6F OR 4F Operate Mode s OR S 73 OR 53 Stand By mode Interpretation of count For example If the count is 668 then read the range If the range is 2 range 200mΩ then read the count as 6 68 mΩ No ASCII character Range selected ...

Page 28: ...g the case if needed 5 2 Replacing the Fuse Caution For continued protection against fire or other hazard replace only with a fuse of the specified voltage and current ratings Power Line Fuse Line Voltage Fuse 115V 60Hz 250mA 115V 60Hz 500mA for the Option 05 Input Protection Fuse Voltage Rating Fuse 115V 1A Follow these steps to replace the Fuse 1 Switch OFF the Instrument 2 Disconnect the Test L...

Page 29: ...rly 4 Keep your instrument away from Dust and Dirt which can cause premature wear of moving parts like switches 5 Prior to cleaning the cabinet disconnect the mains plug from the power outlet Clean only with a damp soft cloth and a commercially available mild household cleaner Ensure that no water gets inside the instrument to prevent possible shorts and damage to the instrument Caution Modifying ...

Page 30: ...999 10mA 1mW 200 10m 0 05 5 199 99 1mA 0 1mW 2000 100m 0 05 5 1999 9 0 1mA 0 01mW Note Accuracies are valid from 1 10th of the range to FS of range and valid at Temperature 25ºC 3ºC at 55 10 RH Tempco 150 ppm ºC Warm up time for stated accuracy 5 minutes Over range blinking Zero display 6 2 Environmental Temperature Operating 0ºC to 40ºC Storage 0ºC to 50ºC Humidity 90 RH Non Condensing 6 3 Genera...

Page 31: ...Source terminals Protected by 1Amp Fuse Accessories Supplied 1Amp 250mA fuses Mains cord RS 232 Cable Accessories Optional 1 C Clamp probe assembly with 10 meter long lead P N 85 60198 1 2 Heavy Duty Bond testing probe assembly P N 85 10314 0 3 Test leads with Gold Plated Alligator clips P N 85 60288 0 4 Test leads with Heavy Duty Alligator clips P N 85 60199 1 5 Test leads with Gold Plated Kelvin...

Page 32: ...207 MICRO OHM METER 32 SECTION 7 OPTIONAL ACCESSORIES V I I V C CLAMP DEVICE UNDER TEST 1 C CLAMP ACCESSORIES DUT 2 HEAVY DUTY BOND TESTING PROD ASSEMBLY V V I I TO LR METER TO LR METER 2 HEAVY DUTY BONDING RESISTANCE TEST PROBE ASSEMBLY ...

Page 33: ... V V 3 TEST LEAD WITH GOLD PLATED CROCODILE CLIP DEVICE UNDER TEST I V V I DEVICE UNDER TEST 4 TEST LEAD WITH HEAVY DUTY CROCODILE CLIP V I V V I V TO LR METER TO LR METER 3 TEST LEADS WITH GOLD PLATED ALLIGATOR CLIPS 4 TEST LEADS WITH HEAVY DUTY ALLIGATOR CLIPS ...

Page 34: ...INE LABORATORIES Inc MODEL 3207 MICRO OHM METER 34 I V I V 1 TEST LEAD WITH GOLD PLATED KELVIN CLIP ACCESSORY SUPPLIED WITH INSTRUMENT TO LR METER DEVICE UNDER TEST 5 5 TEST LEADS WITH GOLD PLATED KELVIN CLIPS ...

Page 35: ...BALLANTINE LABORATORIES Inc MODEL 3207 MICRO OHM METER 35 ATTACHMENT CALIBRATION FORM ...

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