Non-contact thermometer

Details Non-contact thermometer Non-contact thermometer

1996-08-28

1998-10-27

Gutierrez, Diego F. F.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374130, 2503383, G01J 508, G01J 504, G01K 306

Patent

active

058269800

ABSTRACT:
A non-contact thermometer uses a pyroelectric infrared sensor which makes it possible to measure temperatures of an object having a large area required to be measured, and at a plurality of points. The thermometer sets up a reference position without using a position detecting switch and also improves the accuracy of measuring the temperature due to its increased amount of incident infrared rays transmitted as a result of reducing the motor speed and extending the time of measurement at the point where infrared rays of the object to be measured is to be detected. The thermometer's stepping motor is fed with its operation step input and brought to a stop at the reference exciting phase of the motor which has been set up in advance. The whole measurement operation thereafter is arranged to proceed, starting from the above exciting phase serving as the reference, at which point the motor was brought to a stop.

REFERENCES:
patent: 4634294 (1987-01-01), Christol et al.
patent: 4986672 (1991-01-01), Beynon
patent: 4998826 (1991-03-01), Wood et al.
patent: 5528038 (1996-06-01), Yoshiike et al.
patent: 5567052 (1996-10-01), Yoshiike et al.
patent: 5660471 (1997-08-01), Yoshiike et al.

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