Before Installation
Prior to installation of the flow sensor, the pipe shall be thoroughly flushed out,
and any dirty, stone alike items must be removed from the pipe. Cavitation in
the system must be avoided. If a risk of frost exists, empty the system and, if
necessary, remove the meter. If the water is soiled, fit the strainer in the pipe
before the meter.
Mounting of Flow Sensor
Consider the dimensions of the heat meter, and the distance with
surroundings, minimum 3 cm free space. Straight sections of 10×DN before
and 5×DN after the meter are recommended, to homogenize the
temperatures of water. The meter is to be installed so that the direction of the
arrow on the meter housing corresponds to the direction of flow. Avoid the
collection of air bubbles in the meter during the installation process.
The connecting pipe at the two ends must be on the same horizontal level.
Install horizontally or vertically only, not tilted, inclined or overhead. Install the
flow sensor into horizontal or up streaming pipelines. Do not install at highest
point of piping to avoid air inside the flow sensor. The flow sensor must NOT
be installed in the positions where swirling flow exists (swirling flow is normally
caused by bending pipe), or pulsatile flow exists (pulsatile flow is normally
caused by pump, therefore the flow sensor must be installed as far as
possible from pump and must not be installed on the outlet of pump) or air
may build up.
Mounting of Temperature Sensors
Temperature sensors used to measure the flow temperature are usually
installed ex-factory, i.e. integrated into the flow pipe. Installation instructions
for sensor used to measure pipe and return temperature are as followings:
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