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High accuracy working
standards for on-site resistance calibration
- Small and rugged
- No oil or air baths required
- 18° to 28° C operating range
- Six-month stability to 2.5 ppm
- Supplied with temperature characterization
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Fluke 742A Resistance Standards
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 Resistance
Standards 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 (permanent shift in resistance) is typically
less than 2 ppm after cycling between 0°C and 40°C.
The 742A-1 1 Ω and the
742A-10k 10 kΩ units are ideally suited for Artifact
Calibration of Fluke 5700A/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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