An Automatic Recorder for Resistance Thermometry
- 1 November 1945
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 16 (11) , 318-321
- https://doi.org/10.1063/1.1770300
Abstract
A completely automatic recording Wheatstone bridge is designed especially for use in resistance thermometry. It is built into a standard commercial recorder, contains decade coils operated by a Geneva gear mechanism, and increases the original range of the machine 100‐fold. With it a continuous record of resistance versus time is made covering a range of 0 to 100 ohms that may be easily read to 0.001 ohm±0.001 ohm. Employed in connection with a standard 25‐ohm platinum resistance thermometer a temperature range of −190° to 550°C can be covered with a precision of 0.01°C±0.01°.Keywords
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