© Adolf Thies GmbH & Co. KG · Hauptstraße 76 · 37083 Göttingen · Germany
021197/07/19
Tel. +49 551 79001-0 · Fax +49 551 79001-65 · [email protected] ·
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Housing
The housing consists of polycarbonate, the support of stainless steel.
A special coating serves for reducing measurement errors which might arise by drop
formation at the housing in the range of the measured distance. This coating must not be
removed.
3.1 Definition to the Precipitation Status / Relay Output
Precipitation „yes“
= Relay contact W + R closed.
Precipitation „no“
= Relay contact W + A closed.
Power failure (sensor „off“)
= Relay contact W + R closed.
•
Precipitation „yes” is signalized with missing or interrupted operating voltage (sensor
„off“); thus device protection is existing even in this status.
3.2 Definition to the Precipitation Event / Optocoupler Output
Precipitation „yes“
= Optocoupler C + E closed, pulse duration 60msec.
Precipitation „no“
= Optocoupler C + E open.
Stromausfall (Sensor „aus“)
= Optocoupler C + E open.
•
With missing or interrupted operating voltage (sensor „off“) there is no particle
precipitation signalized.
4 Installation
Please Note:
The hydrophilic coating must not be damaged. The electrical connection is
to be carried out by experts only. Please open the instrument only with dry
ambient conditions. Do not damage the exposed electronics!
Remark:
In order to achieve an optimal electro-magnetic immunity (> 20V/m) please use shielded
cable.
