Table 3. Mechanical data of the sensor – PN 40
6.3.2. Electrodes
The material of the flow meter electrodes should be matched according to its chemical
resistance to the liquid in which the electrodes are immersed.
The cleanliness of the electrodes may affect the precision of the measurement, and
the accumulation of the impurities may have impact on the measurement process
(isolation form the liquid).
The cleaning of the electrodes is conducted together with the cleansing of the pipeline.
Any damage to the liner must be avoided.
The electrodes must be cleansed directly after the delivery, right before
the installation.
For most liquids, the electrodes do not require cleansing throughout the entire service
period, the self-cleaning by the flowing liquid is sufficient. Self-cleaning is particularly
effective at the flow speed of about 3m/s.
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