Tuesday, 11 August 2015 16:15 Written by 
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CRM 200B+

CRM 200B+

SCOPE introduces its next generation of hugely popular CRM series contact resistance meters,CRM200B+ in all new super light avatars, 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 100 / 200 Amps DC under live EHV switchyard conditions quickly & accurately.

CRM 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 millivolts signal in the presence of kilovolts 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.

Model CRM 200B+ having in-built 200 A current source make use of innovative technology that makes them the lightest 200 Amps micro-ohm meter available.


  • 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.
  • Create device Under Test Identification data(DUT Library)on PC and upload to instrument.Save the test results in respective DUT folder in kit.Download the same to PC in similar folder structure.
  • 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 rechargeable Li-ion battery operated.In built battery monitorand cut off circuit for 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 (DC) 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 . 0 1 μ Ω , 0 . 1 μ Ω & 1 μ Ω on aboveRanges
Accuracy Value ± 1% ± 1 Digit
Output Voltage (Max.) 17.5 VDC
Operation Modes Stand Alone & PC Control
Display 4 Line X 20 character LCD. 4 ½ digit display for Test Current & Resistance
Printer In-built, Thermal Printer
Keypad 5 keys
Memory 1000 records, Internal
Inbuilt Battery Li-Ion, 11.1V, 4 Ah
Power Input to Battery Charger - 90 to 275 VAC, 50/60 Hz ± 10% ;100 to 300 VDC Charger output - 13.5 VDC, 1500 mA Max
Communication Port USB
Software CData CRM - For PC Control & PC Control, Downloading & Analysis, Windows based
Environment 0 to 50°C, Upto 95% RH (Non condensing)
Dimension 340 x 295 x 155 mm
Instrument Weight 5 kg



Read 13459 times Last modified on Friday, 27 December 2019 11:10

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