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Cropico RBC Decade Resistance Box
HIGH ACCURACY, HIGH CURRENT DECADE BOXES WITH VERSATILE WIDE OHM RANGE


The RBC Series is a robust range of high dissipation resistance decades available in 5 or 6 decade versions and suitable for applications where reasonably precise and stable adjustable loads are required.

Constructed using the same high quality components as our other resistance decades and housed in a light alloy ventilated case, the RBC Series will withstand the most arduous use and give many years service.

All parts are fully serviceable and can be repaired in our workshop should the more enthusiastic user damage the units with high overloads.

Key Features

  5 and 6 Decades available
  High dissipation
  5 Watts per coil
  Accuracy 5%
  0.1 ohm to 111,111 ohm
  Fully serviceable
  Special model for insulation simulation


Data Sheet

Specifications

Calibration

Calibration certificates including UKAS traceable are available on request

Switches

Contact material gold plated brass
Contact resistance = 5 milli ohm
Insulation Resistance (all paths = 10 giga ohm)
Proof voltage 1kV

Resistors

Temperature Co-efficient: +/-3ppm / +20degC to +85degC +/-5ppm maximum over -55degC to + 125degC 0.1, 0.01, and 0.001 dials 10ppm/degC

Full Load Stability: +/-35ppm/10,000 hours/+/-50ppm/26,000 hours

No Load Stability: +/-25ppm/10,000 hours/+/-35ppm/26,000 hours

Over full temperature range: -50degC to +125degC

Power Rating: 0.33 watt (+85degC) 0.25 watt (+110degC)

Maximum Continuous Working Voltage: Up to 250V dc

Noise: Essentially non-measurable <1.5 mV/degC

Thermal E.M.F: <0.4mV/degC typical

Encapsulation: Moulded epoxy

Windings: Exclusive 'air cushioned' technique provides virtually stressless elements for improved performance. Non inductively wound.
Direction of winding reversed at half turns point

Weight

5 Dial Box - 3.0kg
6 Dial Box - 3.5kg

Size

5 Dial Box - 390mm x 105mm x 130mm (W H D) approx
6 Dial Box - 450mm x 105mm x 130mm (W H D) approx

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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Cropico

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