Friday, 24 July 2020 13:14 Written by 
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CRM 200B+

CRM 200B+

SCOPE introduces its next generation of hugely popular CRM series contact resistance meter, CRM200B+ in all new super light avatar, based on cutting edge ultra capacitor technology. CRM incorporates some state of the art hardware & smart software features making it a must have tool for testing & maintenance engineers.

CRM directly measures micro-ohm values at 200A DC under live EHV switchyard conditions quickly & accurately. It is specially designed to reliably measure micro-ohm contact resistances of Circuit Breakers, Isolators, Busbar joints, earth switch joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards up-to 765 kV. SCOPE’s ability to make electronics work in such environment enables CRM to measure mili-volts signal in the presence of kilo-volts noise. 

CRM is equally suitable for MV / HV / EHV equipments and is very useful to Power Companies, Equipment Manufacturers, Testing & Commissioning Companies and Test Laboratories etc.


  • A radically new design makes CRM the lightest available contact resistance meter.
  • Simultaneous & multiple samples of test current and voltage drop are taken at high speed using fast & high resolution ADCs.
  • Resistance will be calculated by taking actual V/I ratio and averaging of individual samples giving stable & accurate results. It makes it independent of test current variations.
  • Autoranging. Direct display of micro-ohm value does away with manual calculations.
  • In built real time clock, memory and printer. Test time stamping on each record enables time references for future use.
  • Fool-proof connections and repeatability are ensured by SCOPE’s specially designed proprietary Ck clamps.
  • Supplied with rugged calibrated test lead set suitable for 4 wire measurement.
  • Optimised test lead set design gives lengths enough for testing EHV CBs, yet are lightweight.
  • Mains as well as battery operations
  • Protection against battery deep discharge.
  • Simple operation. Tests can be conducted even by technicians.
  • Instrument is continuously available for measurements one after the other. No ON/OFF duty cycle.
  • Enclosed in ultra rugged IP67 class hard moulded case.
  • PC Downloading & Analysis including ‘Trend Analysis’ possible with “CData CRM+” Software supplied with kit.
  • Instrument debug options like memory check, printer check, PC downloading check are provided.


Parameter CRM 200B+
Test Current  200A plus. Peak Test Current will be decided by the load resistance, however 200A minimum is guaranteed
Resistance Range  0 - 200µΩ, 2000µΩ, 20mΩ, Autoranging
Resolution 0.01µΩ, 0.1µΩ & 1µΩ for above range respectively
 Accuracy   Value ± 1% ± 1 Digit
Output Voltage (max)   17.5V DC
Operation Mode  Stand Alone & PC Control 
Display  4 Line X 20 character LCD. 4 ½ digit display for Test Current & Resistance 
Printer  In-built Thermal Printer
Memory 1000 records Internal
In-Built Battery Li-Ion, 11.1V, 6 Ah

Input to Battery charger: 90-275V AC , 50Hz ±10%, 100 to 300V DC

Charger output - 13.5 V DC, 1500 mA Max

Communication Port  USB
Software CData CRM - For PC Control & PC Control, Downloading & Analysis, Windows based
Environment 0 to 50°C, up to 95% RH (non-condensing)
Dimension  340 x 295 x 155 mm
Weight 5kg


Read 15229 times Last modified on Thursday, 02 March 2023 04:24
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