Thermocouple transmitter with cold junction compensation

Details Thermocouple transmitter with cold junction compensation Thermocouple transmitter with cold junction compensation

1989-05-31

1990-06-26

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374133, G01K 0712

Patent

active

049366904

ABSTRACT:
A transmitter generates an output signal, which represents temperature, based on potential across thermocouple leads from a main thermocouple. A housing has first and second terminals extending through a wall which separates first and second cavities in the housing. The terminals are connected to the thermocouple leads in the first cavity to form terminal cold junctions. A converter has converter leads which are connected to the terminals in the second cavity. The converter senses a combined signal which represents main thermocouple potential and terminal cold junction potential. The converter also provides the output signal. A conductor has a first end coupled to the first terminal and a second end coupled to the converter forming a correction thermocouple. The correction thermocouple provides a first correction signal representing a difference between a terminal temperature and a converter temperature. A sensor on the converter provides a converter temperature signal which represents the converter temperature. The converter provides the output signal as a function of the converter temperature signal, the first correction signal, and the combined signal.

REFERENCES:
patent: 3680384 (1972-08-01), Grindheim
patent: 4130019 (1978-12-01), Nitschke
patent: 4157663 (1979-06-01), Ihlenfeldt
patent: 4488824 (1984-12-01), Salem
patent: 4623266 (1986-11-01), Kielb

Affiliated with

Also associated with

Rating

Thermocouple transmitter with cold junction compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermocouple transmitter with cold junction compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermocouple transmitter with cold junction compensation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1122022