Troubleshooting; Model 9600 Calibration Checks - Welch Allyn 9600 Operation Manual

With a clean tip, load a new probe cover and take three readings in
the 9600 Tester at each temperature. Inspect the probe cover for
integrity and proper loading before each reading. If any tears in the tip
of the probe cover are found, discard the probe cover and load
another one. If all six readings are +/-0.3ºF or less from the tempera-
tures selected, the thermometer is within tolerance. If any reading is
+/-0.4ºF or greater, proceed to the TROUBLESHOOTING section.
4. For Thermistor Thermometers, use the following procedure.
Check the connections between the probe and the thermometer. If the
probe cable is cracked or frayed, replace the probe. If the probe shaft is
bent or loose in the handle, or otherwise damaged, replace the probe. If
there are no problems with the probe, disconnect and reinsert it into the
thermometer, and take another reading. If the reading is no more than
+/-0.3ºF from the temperature selected, then the unit is within toler-
ance. If the reading is +/-0.4ºF or greater, proceed to the TROUBLE-
SHOOTING section.

TROUBLESHOOTING

Follow the troubleshooting procedure if a reading from the previous testing
levels is more than +/-0.3ºF from the temperature selected on the 9600
Tester.
If the procedures for the Level 1 and Level 2 Calibration Tests have been
followed and the tests were unsuccessful, chances are that the unit is out of
calibration. However, before replacing the unit, complete the following
steps.

MODEL 9600 CALIBRATION CHECKS

If several thermometers do not pass the Level 1 or Level 2 Calibration
Tests, there is a chance that the 9600 Tester is out of calibration. There are
several variables that can be checked to verify if the unit is out of calibra-
tion.
1. Check the calibration date on the front of the 9600 Tester. The unit
must have calibration validated annually.
2. Make sure that the 9600 Tester has not been opened. If the calibration
label has been tampered with, the calibration and the warranty will be
void.
Operation Manual
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