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8.
Temperature Calibration
A “
∗
” in place of the decimal point indicates that the Temperature readout
is not calibrated, or a past calibration has failed. The “
∗
” will be removed
once Temperature has been successfully calibrated.
8.1 Calibration Procedure
1. Plug the temperature sensor into the
Temperature
socket.
2. Switch the meter on.
3. Place the sensor into a beaker of room temperature water, alongside
a good quality mercury thermometer. Stir the sensor and the
thermometer gently to ensure an even temperature throughout the
beaker.
4. Select Temperature Calibration (
→
→
→
→
F1:Cal.
→
→
→
→
F2:Temp).
5. The reading from the sensor is now displayed on the right of the
display, and the value you are going to set is shown on the left. For
example…
> 25.0< 20*0
°°°°
c
↑
↑
↑
↑↓
↓
↓
↓
:Set F1:Cal.
6. When the reading on the right has stabilised, press the
and
keys until the reading on the left shows the same temperature as the
mercury thermometer.
7. Press the
key to calibrate the temperature readout.
Alternatively, press the
key to abort temperature calibration.
8.2 Calibration Notes
1. Temperature calibration information is retained in memory when the
WP-80M
is switched off, even when the battery is removed. This
information can be recalled later using the GLP function (see section
9).
2. Temperature does not need to be recalibrated unless the
Temperature sensor is replaced or the meter is initialised.