Page 22
6. 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.
6.1 Calibration
1. Switch the
Aqua-DP
on.
2. Select Temperature mode (see section 2).
3. Plug the Dissolved Oxygen sensor into the sensor socket.
4. 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.
5. When the reading has stabilised, press and hold the
key for 2
seconds.
6. The reading from the sensor is now displayed on the top line, and the
value you are
going to set is on the bottom line. For example…
Enter 25.0
Temp
26.0
7. Press the
and
keys until the bottom line shows the same
temperature as the mercury thermometer.
8. Press the
key to calibrate the temperature readout.
Alternatively, press the
key to abort temperature calibration.
6.2 Calibration Notes
1. Temperature calibration information is stored in memory when the
meter is switched off, even if the battery is removed.
2. Temperature does not need to be re-calibrated unless the Dissolved
Oxygen sensor is replaced or the meter is initialised.
