An alternate method for achieving temperature control in the -160 to +90 C range
Abstract
A single-pass method for accurate and precise temperature control in the -160 to +90 C range is discussed. The method exhibited minimal set-point overshoot during temperature transitions. Control to +/-2 C with transitions between set-points of 7 C per minute were achieved. The method uses commercially available temperature controllers and a gaseous nitrogen/liquid nitrogen mixer to dampen the amplitude of cold temperature spikes caused by liquid nitrogen pulsing.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- November 1993
- Bibcode:
- 1993nasa.rept.....J
- Keywords:
-
- Controllers;
- Liquid Nitrogen;
- Temperature Control;
- Thermal Vacuum Tests;
- Mixers;
- Patent Applications;
- Test Chambers;
- Vacuum Chambers;
- Instrumentation and Photography