Kaye Validator AVS - Chapter 7. Calibrating and Verifying Sensors; Introduction

Chapter 7. Calibrating and Verifying Sensors
Kaye Validator AVS User’s Manual 77
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 (Kaye temperature bath) and a Kaye temperature standard (IRTD). The
IRTD, a self-contained precision measurement standard that provides data directly to the
Kaye Validator AVS, accurately measures the temperature of the standard. The IRTD
provides a traceable standard that is used to correct the temperature readings of your
thermocouples. The Validator AVS 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 AVS
• Select sensors to calibrate
• Run calibration
The Kaye Validator AVS 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 Kaye Validator AVS, you calibrate sensors at a low setpoint and a high setpoint.
When you start calibration, the Kaye Validator AVS 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 AVS logs the stability readings to the calibration report file. The
Kaye Validator AVS then computes and logs deviation on the uncalibrated sensors, and
calibrates all sensors that passed the deviation criteria. Finally, the Kaye Validator AVS
computes and logs deviation on the calibrated sensors for a specified time period.