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Notes
Security
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage.
●
Observe national provisions and comply with the appropriate safety regulations.
Engineering
Powering the sensor requires a transformer for safety extra low-voltage (SELV) with sepa-
rate windings for 100 % duty. When sizing and protecting the transformer, comply with all lo-
cal safety regulations.
When sizing the transformer, consider the sensor's power consumption.
For correct wiring, see the related device data sheets.
Observe all permissible line lengths.
Cable routing and cable selection
Note that when routing cables, the longer the cable runs and the closer the cables, the
greater the electrical interference. Use shielded cables in EMC-prone environments.
Twisted pair cables are required for both secondary supply lines and signal lines.
Mounting
To ensure degree of protection IP54, the sensor must be fitted with the cable entry pointing
Mounting location
downward!
and orientation
Mount the sensor where it can be easily accessed by service.
●
If used after humidifier, a certain distance is required between humidifier and sensor, so
that the vapor or mist generated by the humidifier can evaporate before reaching the
sensor. This distance is marked on the diagram as B
the humidifier and the sensor must be no less than B
●
Avoid any impact or shock to the sensing elements in the immersion rod.
●
To avoid sunlight damage, do not mount the sensor on a rooftop. To ensure correct op-
eration, the sensor's ambient temperature must be in the range of -5...45 ° C.
Siemens
Smart Infrastructure
CAUTION
. The minimum distance between
M
.
M
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2021-07-05
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