Test of Weston Tropical Climate Voltmeter with Composition Multiplier
Abstract
The instrument was operated in ambient temperature from -10 to 50 deg C. and the voltage indications for a given applied potential were noted as well as the d.c. resistance between terminals. The instrument was subjected to a humidity test at a relative humidity of approximately 90 percent at a temperature of 50 deg C. and the voltage reading and resistance were noted. The instrument case was then coated with paraffin and a second humidity test carried out after which the temperature test was repeated. The meter case was opened for inspection and the effect of high humidity on the sealing gasket was determined. The multiplier was removed and in its place a grid leak of the same resistance was installed and the behavior of the meter with this resistor as the multiplier was observed. Both of these composition resistors were then mounted in the humidity chamber without any associated parts, at a relative humidity of 95 percent and a temperature of 50 deg C, and their resistance determined at intervals over a period of several days.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 1936
- Accession Number
- AD1152170
Entities
People
- R. W. Armstrong
- Robert B. Owens
Organizations
- United States Naval Research Laboratory