MS-301 Multi parameter Water Quality Sensor
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6.1.6.1 Salinity compensation and temperature compensation
1)Salinity compensation
The water contains a large amount of salt substances, which will have a certain influence on the dissolved
oxygen content, so that the output signal of the dissolved oxygen sensor drifts with the change of salinity.
In order to reduce this phenomenon, certain compensation measures can be taken. Correcting the output
result, to achieve a certain range, to eliminate the influence of salinity change on the output signal of the
sensor is called "salt compensation". The other conditions are the same, the greater the salinity, the lower
the dissolved oxygen.
Under normal circumstances, the sensor is calibrated under the standard 0. When the working
environment deviates, it can compensate for the effect of salinity on dissolved oxygen, ensuring
measurement accuracy, convenient use and comparison.
The Sensor has a salinity compensation function, and the dissolved oxygen has compensated for the
salinity in the solution in real time. If manual salinity compensation is required, the on-site salinity value
can be entered into the dialog box after salinity compensation.
2)Temperature compensation
It is necessary to take certain compensation measures to correct the output result, and to eliminate the
influence of temperature change on the output signal of the sensor within a certain range is called
“temperature compensation”. In general, the temperature of the sensor is calibrated to 25 ° C, which
compensates when the working environment deviates, which can eliminate the effect of temperature on
dissolved oxygen. The oxygen-dissolving Sensor features automatic temperature compensation and
requires no additional compensation.
6.1.7 Depth Sensor
From the Calibration menu, select the “Depth” option to enter the depth calibration procedure as shown
below, and then you are ready to begin calibration.