MS-301 Multi parameter Water Quality Sensor
Web:www.boquinstrument.com
Before calibrating, make sure the Sensor is clean and dry and free of solid particles, debris, algae, etc..
These substances will contaminate the standard solution during calibration and cause calibration errors or
incorrect measurement data. Turbidity Sensors are typically subjected to 4-point calibration or
high-low-point calibration using a Forma turbidity standard.
The specific calibration steps are as follows:
A,4-point calibration:
1. Pour distilled water into a clean, dry or pre-rinsed calibration container. Carefully immerse the Sensor
at the end of the main unit in the solution. Make sure that the front end of the turbidity Sensor is
immersed in the solution for at least 2cm. When the AD value in the software interface is stable, enter the
standard value “0” in the “Calibration” box and click the zero calibration (At this time, the calibration
progress display box will prompt the calibration status).
2. Select the “1st point” in “Points” and pour the standard solution of the first point (20NTU is
recommended, the customer can choose according to the actual situation) into the clean and dry or
pre-rinsed calibration container. Carefully immerse the Sensor at the end of the main unit in the solution.
Make sure that the front end of the turbidity Sensor is immersed in the solution for at least 2cm. When the
AD value in the software interface is stable, enter the turbidity value in the “Calibration” box and click
“1st point” (At this time, the calibration progress display box will prompt the calibration status). Rinse
and dry the sensor and calibration container with water after completion.
3. Select the 2nd point in the “Points” and pour the standard solution of the second point (recommended