Horiba Scientific LAQUAact D-75G, Инструкция по эксплуатации

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Dissolved oxygen measurement
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Dissolved oxygen measurement
You can use the DO electrode to measure the dissolved oxygen, oxygen concentration,
and saturated oxygen concentration of a sample. 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 8)).
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 (default: ATC)
Because a temperature sensor is equipped with the DO electrode, you can use the
automatic temperature compensation function. During calibration, compensating for the
change in dissolved oxygen due to temperature change by measuring the temperature of
the air (when air calibration is performed) or the standard solution (when standard
solution calibration is performed). This function allows you to correct the sensitivity of the
calibration data according to the sample temperature.
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 perform measurement by matching the sample temperature to the
temperature setting of the instrument. By doing so, you can obtain the correct
measurement value without being affected by sensitivity changes caused by
temperature.
1. Press the key to enter the setting mode.
2. Select the "TEMP" (temperature setting) and then press the key.
key