MS-301 Multi parameter Water Quality Sensor
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7.1.3 Conductivity sensor maintenance
Clean the elliptical measurement compartment (channel to the internal electrode) on the conductivity
sensor with a small non-abrasive brush or cotton swab. Use soap to remove oils, oils or micro-organisms.
Rinse with water and calibrate with the meter.
Note:
1. High-purity water and ultra-pure water can not choose the open sampling and measurement method.
When the high-purity water is exposed to the air, a large amount of carbon dioxide is quickly dissolved
into the water, and the inner wall of the vessel is dirty and the dust in the air. It will also be redissolved in
water, resulting in multiple errors. High-purity water can only be verified by closed, flowing, bypass flow
cells. Measuring open high-purity water with laboratory instruments is a cognitive error. It's not
comparable at all.
2. Adhesion of resin regenerated dirt easily leads to contamination of the conductivity cell, which can be
recovered after cleaning with an alcohol cotton ball.
7.1.4 Dissolved oxygen sensor maintenance
It is recommended to clean the dissolved oxygen sensor at intervals (usually 3 months, depending on the
site environment) to ensure the accuracy of the measurement.
Clean the outer surface of the sensor with water (do not use organic solvents). If debris remains, wipe it
with a soft, damp cloth. Do not place the sensor in direct sunlight or where it can be illuminated by
radiation. If the total exposure time of the sensor reaches one hour throughout the life of the sensor, it will
cause the fluorescent cap to age, causing the fluorescent cap to malfunction and causing an erroneous
reading. Carefully rinse the sensor and membrane with water after each use.
Generally, the dissolved oxygen sensor has an inherent limitation, and the life of the sensor membrane
cover is 12 months. When the membrane cover is over 12 months or the membrane cover is severely
damaged, the membrane cover needs to be replaced.
Note: Do not pull out the membrane cover when replacing the membrane cover. Slowly screw it on to
allow the air to slowly drain.