Calibration of process control temperature transmitter

Details Calibration of process control temperature transmitter Calibration of process control temperature transmitter

1997-05-16

1998-11-03

Biegel, Ronald L.

Thermal measuring and testing

Thermal calibration system

G01K 1500

Patent

active

058298762

ABSTRACT:
A transmitter in a process control loop measures temperature. A calibrator includes a known calibration element which is connected to the transmitter. Software in the transmitter compares a measured value of the calibration element with the actual value of the calibration element and responsively calibrates the transmitter. The calibrator includes a temperature calibration sensor for coupling to a terminal block of the transmitter. The temperature calibration sensor provides an actual temperature input to the transmitter. The transmitter measures actual temperature of the terminal block and compares actual temperature with a temperature measured by an internal terminal block temperature sensor, and responsively calibrates the internal temperature sensor.

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