Apparatus and method for calibrating a measuring device

Details Apparatus and method for calibrating a measuring device Apparatus and method for calibrating a measuring device

1988-03-18

1990-04-24

Noland, Tom

Measuring and testing

Instrument proving or calibrating

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

36457108, G01F 2500

Patent

active

049189735

ABSTRACT:
A calibration apparatus includes a microcomputer-based calibrator unit, functioning separately from a measuring device to be calibrated, and a coupling coil, through which calibration information generated by the calibrator unit is electromagnetically transmitted to the measuring device to which the coil is strapped or otherwise connected. This permits the measuring device to be calibrated without the measuring device being removed from the environment in which it is to make measurements. The methodology of the apparatus permits the measuring device to be calibrated either with standard calibration data, such as whereby the measuring device is calibrated to a factory standard calibration, or with variable calibration data, such as whereby a then-current calibration of the measuring device is "tweaked".

REFERENCES:
patent: 3517308 (1970-06-01), Mirdadian
patent: 3633401 (1972-01-01), Wada
patent: 3783248 (1974-01-01), Sugden, Jr.
patent: 3795131 (1974-03-01), Wade et al.
patent: 3823310 (1974-02-01), Kalotay et al.
patent: 4509373 (1985-04-01), Brown
patent: 4520650 (1985-06-01), Palmer et al.
patent: 4676112 (1987-06-01), Uematsu et al.
patent: 4700579 (1987-10-01), Hall
Great Plains Industries, Inc., Product Bulletin No. 920614-1, "Electronic Digital Meters by GPI", 4 pages, 11-1986.

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