Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1993-12-14
1994-11-22
Noland, Thomas P.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
73497, 73517R, 73708, 364566, 36457101, G01D 5252, G01D 304, G01P 2100
Patent
active
053657683
ABSTRACT:
A signal processor (5) is coupled to a detector (6) for detecting a physical quantity. The signal processor has a zero adjustment memory (14) and a sensitivity adjustment memory (16). The zero adjustment memory and the sensitivity adjustment memory have a number of switches (20, 20A, 20', 20"), respectively. These switches are changed over digitally using a zener zapping method or a polysilicon fuse method at each switch to adjust the characteristics of the detector.
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Kato Kazuo
Matsumoto Masahiro
Miki Masayuki
Suzuki Seiko
Tsuchitani Shigeki
Hitachi , Ltd.
Noland Thomas P.
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