horiba LAQUAact-PD110, Instruction Manual

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Dissolved oxygen measurement
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Dissolved oxygen measurement
You can measure the dissolved oxygen, oxygen concentration, and saturated oxygen
concentration of a sample with a DO electrode. Oxygen concentration and saturated
oxygen concentration are calculated from the measured value of dissolved oxygen.
Press the key to select the measurement parameter (“ Changing the measurement
parameter ” (page 12)).
The operation is the same for all measurement parameters.
These measurement parameters can be measured using channel 2 of the instrument.
Press the keys to set the main screen to channel 2.
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Setting the instrument
• Setting temperature compensation
Automatic temperature compensation function can be used by using a DO electrode
equipped with a temperature sensor. You can perform calibration with compensation by
measuring the temperature of the standard solution (or the temperature of the air, when
air calibration). You can correct the sensitivity of the calibration data according to the
sample temperature with this function.
If you do not use the automatic temperature compensation function, match the
temperature setting of the instrument to the temperature of the air (when air calibration is
performed) or the standard solution (when standard solution calibration is performed)
during calibration and match the sample temperature to the temperature setting of the
instrument in measurement. By doing so, you can obtain the correct measurement value
without being affected by sensitivity variation caused by temperature.
1. Press the key to enter the setting mode.
2. Press the keys to select "TEMP" (temperature setting) and then press the
key.
If the temperature connector (T) is connected, "ATC" (automatic temperature
compensation) appears. If the temperature connector (T) is not connected, "MTC"
(manual temperature compensation) appears.