7. 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.
7.1 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 probe 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 probe 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
↑↑↓↓: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.
7.2 Calibration Notes
1. Temperature calibration information is retained in memory when the
WP-80 is switched off, even when the battery is removed. This
information can be recalled later using the GLP function (see section
8).
2. Temperature does not need to be recalibrated unless the
Temperature probe is replaced or the meter is initialised.
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