horiba OM-71G, Instruction Manual

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Dissolved oxygen measurement
18
• Setting air pressure correction (default: 1013 hPa)
Amount of oxygen that can be dissolved in water is affected by air pressure in the loca-
tion where measurement is taking place. You need to set the air pressure of the mea-
surement location to the instrument before calibration to correct the pressure influence,
and then perform measurement.
1. Press the key to enter the setting mode.
2. Press the keys to select the "PRES" (air pressure collection setting) and
then press the key.
3. Enter the air pressure value of the measurement location and then press the
key.
4. Press the key to reflect the change.
key
key