Resistance thermometer measuring system

Details Resistance thermometer measuring system Resistance thermometer measuring system

1976-10-06

1978-07-25

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 716

Patent

active

041021983

ABSTRACT:
A resistance thermometer measuring system for enabling the temperature of a machine to be observed. This measuring system includes a temperature responsive resistance member which is constructed as part of the machine under observation. The resistance of the temperature responsive resistance member varies as the temperature of the member varies, this variance in temperature corresponds to variances in the temperature of the machine. By sensing the voltage across the resistance member, changes in the temperature are detected. When the voltage being sensed exceeds a preset level, an indicating signal can be generated. On the other hand, if a malfunction occurs in the resistance member, such as a break in the resistance element or the leads, then a fallacious indicating signal might be generated. In order to prevent generation of such an improper signal, a second indicating signal is generated upon occurrence of a malfunction within the resistance member. This second signal is utilized to block the utilization of the first indicating signal.

REFERENCES:
patent: 3176284 (1965-03-01), Jones et al.
patent: 3699569 (1972-10-01), Lee
patent: 3769577 (1973-10-01), Schnur et al.
patent: 3836910 (1974-09-01), Bernin
patent: 3976985 (1976-08-01), Schalow et al
patent: 4017852 (1977-04-01), Kabat
patent: 4035787 (1977-07-01), Hornung

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