Flow computer calibration technique

Details Flow computer calibration technique Flow computer calibration technique

1988-01-07

1990-01-23

Lall, Parshotam S.

Boots, shoes, and leggings

341120, 36457101, 371 161, H03M 110

Patent

active

048962821

ABSTRACT:
A method of calibrating a process computer, of the kind including an analogue to digital converter for converting analogue input signals representative of measured process parameters into digital signals for processing within the computer, and a digital to analogue converter for converting the processed signals into analogue output signals, comprises applying a known analogue signal to the analogue to digital converter, comparing the resulting digital signal with its expected value, and computing and storing a first calibrating correction value in dependence on the difference. A known digital signal is then applied from within the computer to the digital to analogue converter, whose output is coupled back to the input of the analogue to digital converter for conversion thereby and correction in accordance with the first calibrating correction value. A second calibrating correction value is then computed from the difference between the corrected output of the analogue to digital coverter and the known digital signal, the second value being stored for use in relation to the digital to analogue converter.

REFERENCES:
patent: 4280196 (1981-07-01), Hornak et al.
patent: 4340882 (1982-07-01), Maio et al.
patent: 4353060 (1982-10-01), Endoh et al.
patent: 4364027 (1982-12-01), Murooka
patent: 4446715 (1984-05-01), Bailey
patent: 4465995 (1984-08-01), Sloane
patent: 4580126 (1986-04-01), Kato et al.
patent: 4680723 (1987-07-01), Whinray et al.
patent: 4692738 (1987-09-01), Suzuki
patent: 4734678 (1988-03-01), Take et al.
patent: 4758781 (1988-07-01), Ueno et al.

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