In-situ response time testing of thermocouples
Abstract
The Loop Current Step Response (LCSR) method has been developed for in situ response time testing of thermocouples and resistance thermometers. A means for measuring the sensor response for actual operating conditions and installation details is provided. This technology is ready to be assembled into an instrument for use in aerospace, nuclear, chemical and other industries where transient temperature measurements are important. The method provides time constant results within better than about 20 percent of value obtained from plunge tests. These results are based on tests performed in water at low flow rates (1M/sec) and in air flow rates ranging from a few meters per second to over a hundred kilometers per hour.
- Publication:
-
35th International Instrumentation Symposium
- Pub Date:
- 1989
- Bibcode:
- 1989isa..proc..587H
- Keywords:
-
- Performance Tests;
- Response Bias;
- Thermocouples;
- Transient Heating;
- Electric Current;
- Experiment Design;
- Resistance Heating;
- Time Constant;
- Transient Response;
- Instrumentation and Photography