MS-301 Multi parameter Water Quality Sensor
Web:www.boquinstrument.com
6.1.6 DO Dissolved Oxygen Calibration
From the Calibration menu, select the Dissolved Oxygen option to enter the Dissolved Oxygen
Calibration procedure as shown below, and then ready to begin calibration.
The dissolved oxygen sensor is calibrated at the factory and can be air calibration if it needs to be
calibrated.
Specific calibration steps:
1. Remove the dissolved oxygen sensor, clean the sensor with a clean rag (soft texture and smooth
surface), then blot the moisture on the sensor to ensure the sensor is dry.
2. After the current state data of the instrument is stabilized (or about 10 minutes later), start calibration
again, and avoid direct sunlight.
3. Click “Air calibration” in the Type B calibration
4. After the calibration is complete, rinse the sensor and calibration container with water and allow to dry.
Note: During the calibration process, the sensor must be protected from direct sunlight, otherwise the
performance of the dissolved oxygen sensor will be lost.
You can also directly enter the value in the “Correction Parameters” box, click “factor”, “deviation” to
calibrate the factor and deviation value, or directly input the value by clicking “salinity” and “atmospheric
pressure setting” for salinity and atmospheric pressure compensation and settings.