Method and apparatus for high pressure testing of solid state pr

Details Method and apparatus for high pressure testing of solid state pr Method and apparatus for high pressure testing of solid state pr

1986-08-19

1987-11-24

Noland, Tom

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 1B, 29595, G01L 2700

Patent

active

047080124

ABSTRACT:
A method of testing the diaphragm portion of the die before the pressure sensor is assembled is disclosed. A mechanical pressure is exerted upon the diaphragm equivalent to any desired atmospheric pressure. The electrical output of the die is then measured to determine if it is within an acceptable range. If the electrical output is not within the acceptable range the resistors of the die can be trimmed at that time, prior to assembly.

REFERENCES:
patent: 3868844 (1975-03-01), Klein
patent: 4331022 (1982-05-01), Coussot et al.
patent: 4603574 (1986-08-01), Norman

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