SICK DOSIC Series, Operating Instructions Manual, Page: 15 / 58

OPERATING INSTRUCTIONS | DOSIC
®
8020955/11HD / 2018-12-12| SICK AG
Subject to change without notice
15
5 MOUNTING
5 Mounting
5.1 Installation conditions
Install the sensor in line with the flow direction of the measurement medium (refer to
the arrow on the measurement channel). The measurement medium must fill the mea -
surement channel completely.
The formation of gas in the measurement medium can affect the measurement. For
this reason, the sensor should be installed in a section where no gas formation is to be
expected (in a vertical position where possible
1
).
Where pumps are used, we recommend installing the sensor after the pump (pressure
side). Solid particles will affect the measurement. Ensure that no solid particles can
affect the measurement (e.g., by using filters).
The installation of inlet and outlet zones in the system is recommended. The inlet zone
is a straight section of pipe of 5 x DN length
2
. The outlet zone is a section of 3 x DN
length
3
. Increase the inlet zone to 15 x DN when the sensor is installed after a pump.
Increase the inlet zone to 15 x DN when the sensor is installed after a valve. The tubes
must not cause turbulences.
To ensure that the measurement channel is kept full with the medium to be measured
at all times, the sensor should not be mounted in front of or in down pipes, or at the
highest point in the system
4
.
The sensor head can be turned to facilitate optimum installation. To turn the sensor
head, the nut and the locking screw on the base of the sensor head must be loosened,
and then tightened again once the sensor head has been turned (nut: 30 Nm ... 40 Nm;
locking screw: 0.7 Nm ... 0.9 Nm).
The X-axis of the measurement channel should be installed at a horizontal angle to the
ground
5
. Where the sensor is being installed vertically and in an EHEDG-compliant
installation, we recommend that the offset angle between inlet and outlet zone and
Y-axis not exceed 4°, in order to allow self-drainage to take place
6
.
For EHEDG-compliant installation, EHEDG-certified seals must be used (not supplied).
4
3
1
2
Fig. 2: Recommended installation