Fluke 742A Standard Resistors are high accuracy working standards for precision, on-site resistance calibration. Their excellent temperature stability allows them to be used from 18°C to 28°C with typically less than 2 ppm degradation. Using the calibration table supplied with the standards, which lists corrections in 0.5°C increments, this uncertainty can be reduced to near zero. No cumbersome oil or air baths are required.
Because 742A Standard Resistors are small and rugged, they are easy to transport. Care has been taken to reduce resistance changes brought about by thermal and mechanical shock. Retrace (shift in resistance) is typically less than 2 ppm after cycling between 0°C and 40°C.
The 742A-1 1 Ω and 742A-10k 10 kΩ units are ideally suited for Artifact Calibration of the Fluke 5700A and 5720A Calibrators. The other values can be used to verify the calibration if you desire.
A convenient transit case, designed to hold two standards, is available as an option.
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742A-100: Nominal Value: 100.0 Ohms
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742A-100: Deviation from Nominal: 13ppm
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742A-100: Calibration Uncertainty 23°C: 1.0ppm
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742A-100: Max Change 18°C to 28°C (± ppm): 3.0
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742A-100: Max Voltage: 2.0 volts
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Small and rugged
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Supplied with temperature characterization
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Six month stability to 2.5 ppm
