YSI VisoTurb 700 IQ - Manual (Page 27)

VisoTurb
®
700 IQ (SW) Measuring
4 - 1 ba76039e01 01/2012
4 Measuring
The turbidity measurement in aqueous media with the VisoTurb
®
700 IQ (SW) is conducted nephelometrically in accordance with EN
ISO 7027.
The turbidity/total suspended solids sensor can also be used to
determine the total suspended solids content in the sample. The
appropriate correlation for the given application can be determined via
a reference measurement. After this adjustment, the turbidity value is
converted into the concentration of total suspended solids.
4.1 Measuring operation
Note
Large differences between the temperature of the sensor and sample
can falsify the measurement result. Thus, as a precaution during
commissioning, wait for 15 minutes before using the measured value.
Note
The allowed temperature of the measuring medium is 0 ... 60 °C.
The ultrasound cleaning system switches itself off automatically if the
temperature of the measuring medium is above 40 °C. When the
temperature decreases below 40 °C, it switches itself on again. The
switching off above 40 °C prevents an overheating, for example if the
minimum immersion depth of the sensor is not maintained.
1 Immerse the sensor in the sample.
2 Read the measured value on the terminal of the IQ S ENSOR
N ET system.