DTM500 Series Performance Verification
6
Handheld and Benchtop Instruments Basic Service
Set Up
To prepare for the performance verification checks, do the following.
1. Warm up the thermometer for 60 minutes.
2. Photocopy the test records on pages 7 through 9. Use them to record your
test results.
Verification Procedure
Implement the following tests to verify the temperature measurement accuracy of
your DTM510 or DTM520 thermometer.
1. Connect the thermocouple simulator output to the temperature probe input.
For the DTM520, connect the simulator to the T1 input connector; then
repeat the test using the T2 input connector.
NOTE. Thermocouple connectors are temperature sensitive. For best measure-
ment accuracy, do not touch the connector contacts and minimize handling of the
connector housings.
2. Set the simulator to the correct probe type. The DTM510 thermometer uses a
K-type probe. The DTM520 thermometer can use either a K- or J-type probe.
3. For each of the conditions specified in the test records, do the following:
a. Set the thermometer Resolution to 0.1_ or 1_ (DTM510 only).
b. Set the thermometer to measure _C or _F.
c. Set the calibrator to each of the temperature values shown in the test
records; then verify that the thermometer display reads within the
specified Low and High limits.
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