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2002 National Instruments Corp. All rights reserved.
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July 2002
370565A-01
TC-2095 R
ACK
-M
OUNT
T
ERMINAL
B
LOCK
C
ALIBRATION
P
ROCEDURE
Introduction
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.
What Is Calibration?
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.
Why Should You Verify?
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.
How Often Should You Verify?
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.
ni.com
