MS-301 Multi parameter Water Quality Sensor
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Only professionals can undertake the maintenance tasks described in this chapter of this manual.
To ensure continuous and reliable operation of the water quality monitoring system, we recommend a
thorough and standardized maintenance process over time. In order to determine the appropriate
maintenance intervals required at a site of use, the equipment and sensors should be periodically observed
to compare the results before and after calibration and the corresponding time of the sensors.
A contaminated, worn or damaged sensor will not produce a reliable reading. It is recommended to
maintain the sensor before calibration.
In order to get the best measurement results, regular maintenance and maintenance is required.
Maintenance and maintenance mainly include cleaning of sensors.
7.1 Sensor maintenance
7.1.1 Temperature sensor maintenance
Use soap or scrub alcohol to remove grease, oil or microbes and rinse the sensor Sensor with water. Do
not use any object to poke the sensor, otherwise the sensor film will rupture.
7.1.2 pH sensor maintenance
The pH sensor requires frequent maintenance to remove contaminants from the sensing element, which
can reduce the sensor's reaction time. Remove the sensor from the main unit before cleaning the sensor.
If the pH sensor is covered by deposits or micro-organisms, clean the glass with a very clean, soft, wet,
non-scratched cloth or cotton ball with a mild soap and then use 0.01 mol/L HCL or NaOH solution.
Brush, (dissolve the hardly soluble scale such as calcium and magnesium with EDTA disodium solution),
rinse with clean water, dry it and calibrate with the meter.
If there is oil on the electrode, it can be rubbed with cotton soaked with CCl4 or acetone. Then, it was
immersed in a 0.1 mol/L HCI solution for 12 hours, and then repeatedly rinsed with distilled water and
dried, and then calibrated with a meter.
Avoid long-term dry storage, usually in a protective cover with 3.0 mol / L potassium chloride solution.
Important note: Avoid using anhydrous ethanol or dehydrating detergent to treat the electrode.