National Instruments TC-2095 Calibration Procedure

TC-2095 R
C
ALIBRATION

Introduction

What Is Calibration?

Why Should You Verify?

How Often Should You Verify?

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© 2002 National Instruments Corp. All rights reserved.
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ACK OUNT
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ROCEDURE
This document contains step-by-step instructions for verifying the
performance of the temperature sensor on the National Instruments
TC-2095 rack-mount terminal block. This temperature sensor is for
cold-junction compensation of thermocouples on the terminal block.
Calibration consists of verifying the measurement accuracy of a device
and correcting for any measurement error. For TC-2095 terminal blocks,
calibration is simply verifying the measurement accuracy of the
components on the terminal block. Because these components are not
user adjustable, calibration consists of verification only, without correcting
for any error. Verification is measuring the performance of a device and
comparing the results to the factory specifications of the device.
The accuracy of electronic components drifts with time and temperature,
which can affect measurement accuracy as the device ages. Verification
ensures the TC-2095 terminal block still meets NI standards. If the results
of the procedure indicate that the temperature sensor on the terminal block
is out of specification, return the device to NI for repair or replacement.
The measurement accuracy requirements of your application determine
how often you should verify the performance of the TC-2095.
NI recommends you verify the terminal block at least once every year.
You can shorten this interval to six months or 90 days based on the
demands of your application.
T B
ERMINAL LOCK
July 2002
370565A-01