Installation; Siting Requirements; Install The Turbidity Sensor - ABB 4690 Series Operating Instruction

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4 6 9 0 S E R I E S | T U R B I D I T Y S E N S O R | O I/AT S 4 1 0 - E N R E V. A
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Installation

Siting requirements

Make sure that there is a clearance of 200 mm (7.9 in) all around the sensor, to let the turbidity sensor be easily removed for
maintenance. Refer to Install the turbidity sensor for the dimensions of the sensor.
Install the sensor at a height that gives easy access during calibration and cleaning.
NOTICE
Do not install the sensor in direct sunlight.

Install the turbidity sensor

Figure 1 identifies the main components of each sensor.
Referring to Figure 2 or Figure 3:
1 Install the sensor in the position shown with the brackets that are provided. Make sure that the sensor is installed within 5° of
its vertical axis.
2 Connect the sample inlet tube and the sample drain tube.
3 Connect the sample outlet tube. Refer to Figure 4.
Dimensions in mm (in)
46.5
(1.83)
Sample inlet connector
(12 [0.5] ID tube)
Figure 2 Sensor dimensions (with the optional wiper unit)
Note
Leave an additional clearance of approximately 30 mm (1.2 in) above the wiper unit for the bend in the wiper unit cable.
298.0 (11.7)
155.5 (6.12)
6 x Ø7 (0.3)
Mounting holes
Sample drain connector
(12 [0.5] ID tube)
118.0
(4.65)
230.0 (9.0)
403.0
(17.0)
see
Note
below

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