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Operating Instructions
1. General
The microwave barrier is a non-contact measuring procedure and can be used both on metal as well
as non-metal pipelines, containers, shafts, free-fall sections, bellows etc. Since it can penetrate non-
conductive materials such as plastics, it is possible to measure from the outside or through a window.
This makes it possible to completely decouple the measurement from the process - for example to measure
aggressive, abrasive or coarsely grained materials. In case of very difficult conditions - e. g. temperatures up
to 200 °C, pressures up to 20 bar as well as all DustEx-zones – the ProGap S can be used with the help of a
process-adapter.
2. Mounting and Installation
The device can be installed at any installation height. However, it is absolutely necessary to ensure that
transmitters and receivers are installed at the same height (arrow of transmitter and receiver up) and
precisely aligned to each other (see following figure).
G 1
1/2", L=30
Transmitter
G 1
1/2", L=30
103
1
5
LED 1
LED 2
S1
S2
max. 300 m
P1
P2
9
10
13
14
Fig. 1: Mounting
Transmitter and receiver have to be positioned with their front ends facing each other at the same height.
Care should be taken that the ProGap S is installed in an area in which no vibrations are present.
Receiver
103
2
3 4
6
7
8
max. 300 m
11
12
1516
3
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