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CR Calibration Resistors

CR Calibration Resistors

This range of low cost 4 terminal calibration resistors combine high accuracy, class 0.02, long-term stability and permanence of calibration in a compact unit.

Constructed using carefully selected low temperature coefficient Manganin or Zeranin wire, depending upon value, and mounted to ensure mechanical stability, these resistors will provide a cost effective addition to any laboratory or workshop.

Typical applications include:

calibration reference, accurate current measurement, instrument calibration and accurate shunt resistor.

Main areas of application:

  • for tests of measuring bridges or electrical temperature measuring equipment
  • for laboratory setup of a Wheatstone bridge
  • for a defined current characteristic at a defined voltage
  • as shunt resistor for current measurement
  • as part of standard equipment in research laboratories

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Key Features

Low Capacitance and Low Inductance Design  
 
High Accuracy 0.02%
 
Suitable for Direct Current & Technical Frequencies
 
Oil-filled Design Ensures Great Long Term Stability < ±0.01% over many years
 

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Technical Specification

Milliohmmeter Test Standards Technical Specifications

Type Nominal Value Accuracy ±% Temperature Coefficient Max. Current in air Nominal Voltage at Potential Terminals
CR/0.001 1 mohm 0.05 10 ppm/°C 30 A 30 mV
CR/0.01 10 mohm 0.03 10 ppm/°C 14 A 140 mV
CR/0.1 100 mohm 0.02 10 ppm/°C 5 A 500 mV
CR/1 1 ohm 0.02 2 ppm/°C 1.5 A 1.5 V
CR/10 10 ohm 0.02 2 ppm/°C 0.5 A 5 V
CR/100 100 ohm 0.02 2 ppm/°C 0.15 A 15 V
CR/1 k 1 kohm 0.02 2 ppm/°C 45 mA 45 V

Size 38 x 97 x 41 mm (61 mm with terminals)250 g.
Weight 250 g

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