7.2 Digital sensor for measuring nephelometric turbidity
MODBUS RTU
2.RS485
90 91 92 93 94
7.2.1 General information about the turbidity probe
Turbidity sensors are optical sensors. The sensor measurement
principle is based on the IR light method dispersed at 90° (ISO
7027). The measurement is carried out in the infrared range. This
sensor may age during operation which results in sensor drift.
These influences are offset by calibration.
The sensor is calibrated in the factory, so there is no need to
perform calibration during initial commissioning. The sensor shall
be cleaned at regular intervals, during operation, depending on
the level of contamination of the liquid studied.
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