CR Series

CR Series

Product catalog summary
Overview: This document describes a range of high accuracy, cost-effective 4-terminal calibration resistors. These resistors are designed for high precision applications, offering class 0.02 accuracy, long-term stability, and reliable calibration in a compact form factor. They are constructed using low temperature coefficient Manganin or Zeranin wire to ensure mechanical stability and are suitable for use in laboratories and workshops.
Key Features:
  • Low capacitance and low inductance design.
  • High accuracy of 0.02%.
  • Suitable for both DC and AC current.
  • High stability with less than ±0.01% variation over many years.
Ideal Applications:
  • Calibration houses.
  • Research and development departments.
Specifications:
  • Dimensions: 38 x 97 x 41mm (1.5 x 3.8 x 1.6 inches), 61mm (2.4 inches) with terminals.
  • Mass: 250g (9oz) approximately.
  • Maximum Operating Voltage: 70VDC, 33Vrms.
Services:
  • 1-year warranty, subject to product registration.
  • Service and calibration available through Calibrationhouse.
CR Specification Table: The document includes a detailed table listing various models of calibration resistors, each with specific resistance values, tolerance levels, resistivity materials, maximum current capacity, nominal voltage at voltage taps, storage stability, and part numbers. The resistors range from 100μΩ to 100kΩ, with varying tolerances and maximum current ratings, suitable for different precision applications.
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Catalog excerpts

CR Series-1

Key Features ■ Low capacitance and low inductance design ■ High accuracy 0.02% ■ Suitable for DC or AC current ■ High stability <±0.01% over many years Ideal For ■ Calibration houses ■ Research and development departments High accuracy, cost effective 4 terminal calibration resistor 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 resistors. Dimensions 38 x 97 x 41mm / 1.5 x 3.8 x 1.6” (h x w x d) (61mm/ 2.4” with terminals - approx) Mass 250g / 9oz approx Max Operating Voltage 70VDC, 33Vrms Services 1 year warranty (subject to product registration with Seaward. Visit www.seaward.co.uk/register-product) Service and calibration by Calibrationhouse. Go to www.calibrationhouse.com for more information Resistivity material Nominal voltage at voltage taps 6mV 12mV 30mV 30mV 60mV 100mV 140mV 200mV 300mV 500mV 600mV 1V 1.5V 2V 3.5V 5V 7V 10V 15V 20V 35V 45V 40V 70V 100V 140V 200V 300V www.seaward.co.uk/CR For USA, Canada and Mexico enquiries Tel: +1 (813) 886 - 2775 For all other enquiries Tel: +44 (0) 191 587 8741 Email: [email protected]

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.