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Version 2.1
Update: April 2016
PONSEL Mesure
– Aqualabo Contrôle
35 Rue Michel Marion
– 56850 CAUDAN, FRANCE
Tel.: +33(0)2 97 89 25 30
– Fax: +33(0)2 97 76 55 72
Turbidity calibration (in
mg/L)
When a turbidity sensor is used to measure in a range whose units are mg/L,
then the sensor must be calibrated using a field sample.
A 2-point calibration is performed:
- 1 offset using distilled water (0 mg/L),
- 1 gain using a sludge sample: immerse the sensor in the sample, with
stirring, and log the theoretical value measured by the sensor. Using the
same sample, analyze the dry weight in a laboratory in accordance with
standard EN 872 within a range from 0-500 mg/L, and in accordance with
standard NF T 90 105 2 if the concentration is > 500 mg/L.
Temperature calibration
Refer to section 7.2.1
