HIGH TEMPERATURE THERMISTORS
Abstract
CONCLUSIONS: Chromic oxide is an adequate base material to be used in the manufacture of thermistors to be operated to 600 C. Despite the fact that the surface of these thermistors chemisorbs O, H and water vapor, thereby changing unit resistance, a suitable coating material will be found which will minimize this surface effect. Con aminadded to the basic Cr2O3 to change the resistance ranges which can be achieved. It is possible, using this technique, to extend the useful operating range of these thermistors beyond 600 C. An adequate but extremely slow and tedious method of attaching leads to disks and rods has been developed Test equipment was developed which will allow testing of these thermistors at 600 C. The temperature deviation of the test chamber has been held to within 0.01 C thereby allowining oxides can be added to the basic Cr2O3 to change the resistance ranges which can be achieved. It is possible, using this technique, to extend the useful operating range of these thermistors beyond 600 C. An adequate but extremely slow and tedious method of attaching leads to disks and rods has been developed Test equipment was developed which will allow testing of these thermistors at 600 C. The temperature deviation of the test chamber has been held to within 0.01 C thereby allowing a very accurate measurement of thermistor resistance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1960
- Accession Number
- AD0262014
Entities
People
- Alexander E. Lawson
- Donald W. Brusch