Method and apparatus for compensating for environmental effect

Details Method and apparatus for compensating for environmental effect Method and apparatus for compensating for environmental effect

1994-04-01

1996-05-28

Wayner, William E.

Automatic temperature and humidity regulation

Motors

Relay

374109, G01K 300

Patent

active

055203299

ABSTRACT:
A method and apparatus for measuring and compensating for the impact of environmental effects on industrial processing units. A thermal test element having a low thermal mass and high conductivity is exposed to the environment. Ambient air temperature is sensed at a nearby location, and a differential temperature controller determines how much energy is required to maintain the test element at a desired temperature differential from ambient temperature. Duty cycle and wattage outputs enable feedforward compensation for environmentally induced process unit control disturbances.

REFERENCES:
patent: 2826072 (1958-03-01), Kliever
patent: 4504157 (1985-03-01), Crabtree et al.
patent: 5102230 (1992-04-01), Kobayashi et al.

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