Infrared transducer-transmitter for non-contact temperature meas

Details Infrared transducer-transmitter for non-contact temperature meas Infrared transducer-transmitter for non-contact temperature meas

1982-03-04

1985-07-09

McGraw, Vincent P.

Optics: measuring and testing

Optical pyrometers

374128, 374133, G01J 518, G01J 526, G01J 532

Patent

active

045278962

ABSTRACT:
A two-wire transducer-transmitter for non-contact temperature measurement provides, in a unitary housing, a radiation sensing device producing a signal in response to sensed infrared or visible radiation, and electronic circuitry for processing the signal to provide at a two-wire output a current linerarly proportional to the sensed target temperature, on the same two wires as input power preferably in the range of from 4 to 20 milliamperes D.C. full scale.

REFERENCES:
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patent: 3925668 (1975-12-01), Anderson et al.
patent: 4005605 (1977-02-01), Michael
patent: 4045670 (1977-08-01), Anderson et al.
patent: 4081678 (1978-03-01), Macall
patent: 4142417 (1979-03-01), Cashdollar et al.
patent: 4233512 (1980-11-01), Rupert
patent: 4301682 (1981-11-01), Everest
"Digital/Analog Infrared Thermometer", Australian Electronics Engineering, Nov. 1975, vol. 8, #11, p. 47.
"Mikron M65 Infrared Temperature Measurement & Control Apparatus", Mikron Instrument Company, Inc., Ridgewood, NJ 07451.

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