Xylem wtw MIQ/IDS, Руководство по эксплуатации

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MIQ/IDS Turbidity
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ba77277d01 01/2024
9.2 Calibration
9.2.1 General information on calibration
Why calibrate?
The following factors can change with time and affect the measurement results:

the optical characteristics, e. g. color and particle size, and the density of the
measuring medium (e. g. dependent on the season)

the conditions at the measuring location (e. g. due to growing deposits on the
ground and walls)
When to calibrate?
A new calibration is required if there is any change of the characteristics of the
measuring medium or any change of the environment at the measuring location.
9.2.2 Calibration standards
Calibrate with 1 to 3 turbidity standard solutions. The standard solutions must be
selected in the following order.
4. Position the sensor in a way that meets the following requirements:
 Distance to the bottom: 6 cm
 Distance to the walls of the beaker: 2 cm
 Minimum depth of immersion: 2 cm
To position the sensor optimally and permanently while it is measur-
ing, fix it on a support.
Calibration can be carried out on the following devices:

on the
IQ S
ENSOR
N
ET
(see section 9.2.3
C
ALIBRATION PROCEDURE ON THE
IQ S
ENSOR
N
ET
)

on an IDS meter
(see operating manual of the meter)
Calibration details may vary depending on the device selected.
Standard solution Range (FNU/NTU)
1 0.0 ... 1.0
2 5.0 ... 200.0
3 200.0 ... 4000.0