Heinrichs Messtechnik
Installation and Operation Manual PITe
Page 11 of 22
Open inlet or outlet
When installed at an inlet or an outlet, the device should be installed, where possible, in a siphon. This
will ensure that the pipe section fitted with the sensor cannot autonomously drain. The empty pipe
detection circuit of the transmitter is an additional safety feature for recognizing empty or partially filled
pipes.
Caution!
There is the danger of accumulation of solids in the vacinity of a siphon. The installation of a
cleaning aperture in the pipe is therefore advisable.
Down pipes
When down pipes are present in the pipe system, a siphon or a ventilation valve should be positioned
after the sensor. By these means, negative pressure can be avoided in the pipeline, preventing a
breakdown of the flow thus reducing the risk of air inclusions in the measurement medium.
