Kaye Validator AVS, User Manual

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Chapter 7. Calibrating and Verifying Sensors
Chapter 7. Calibrating and Verifying Sensors
7.1 Introduction
Before you perform a qualification study, you should calibrate your temperature sensors to
correct raw temperature readings to a traceable temperature measurement standard. You may
also need to perform verification of the calibration to confirm the accuracy of a qualification
study.
You can perform automatic calibration only if your validation system includes a Kaye
temperature reference and IRTD. The IRTD, a self-contained precision measurement
standard that provides data directly to the Kaye Validator, accurately measures the
temperature of the reference. The IRTD provides a traceable standard that is used to correct
the temperature readings of your thermocouples. The Validator automatically sets the
temperature reference to the specified setpoint (Low, High, Check), and automatically reads
the value of the IRTD at that setpoint.
In this chapter you:
•
Load a setup into the Validator
•
Select sensors to calibrate
•
Run calibration
The Kaye Validator uses the calibration parameters defined in your setup to perform sensor
calibration. Calibration parameters specify the temperature reference setpoints at which
calibration is performed, and the stability and deviation criteria for the temperature sensors
and the temperature standard.
With the Validator, you can calibrate sensors at a low setpoint, a high setpoint, or both.
When you start calibration, the Kaye Validator computes the stability of the temperature
sensors and the temperature standard at the specified setpoint, according to the parameters
defined in your setup. When the temperature standard and all sensors pass the stability
criteria, the Kaye Validator logs the stability readings to the calibration report file. The Kaye
Validator then computes and logs deviation on the uncalibrated sensors, and calibrates all
sensors that passed the deviation criteria. Finally, the Kaye Validator computes and logs
deviation on the calibrated sensors for a specified time period.
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