Non-contacting temperature measuring device

Details Non-contacting temperature measuring device Non-contacting temperature measuring device

1997-03-06

2000-01-18

Fulton, Christopher W.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374 32, G01K 700

Patent

active

060152346

ABSTRACT:
A device (5) for measuring temperatures without mechanical contact comprises a bolometer with thermistors (20.sub.1, 20.sub.2, 20.sub.3, 20.sub.4) arranged as a Wheatstone bridge. Some of the thermistors (202, 204) are shielded and some of the thermistors (20.sub.1, 20.sub.3) are not shielded so as to allow or not to allow them, respectively, to receive thermal radiation (25) from an object (OBJ). The thermal radiation heats the non-shielded thermistors and produces an unbalance (v) of the bridge. This unbalance is canceled by heating all the thermistors by an additional heating (18, 26). In the balanced state the temperature of the object is equal to that of the thermistors. The additional heating is preferably achieved by causing the electric power supplied to the bridge to be varied. Computing means (14) enable the temperature of the object to be derived from current/voltage ratios relating to the thermistors.

REFERENCES:
patent: 3665762 (1972-05-01), Domen
patent: 3745360 (1973-07-01), Paul
patent: 4687342 (1987-08-01), Betzler et al.
patent: 5054936 (1991-10-01), Fraden

Affiliated with

Also associated with

Rating

Non-contacting temperature measuring device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-contacting temperature measuring device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-contacting temperature measuring device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-559256