Manual
Weather Sensor u[sonic]WS7 Modbus
(16480.001) u[sonic]WS7 Modbus
Manual
2.7.2 Power and signal connection
The u[sonic]WS7 sensor requires a 8-pole M16 plug connec-
tor. The cable shield should be connected with both ends at
the ground wire (PE).
To reduce the risk of inductive interference the sensor
must be properly grounded (screening on both sides).
The external connection is via central connector which is
located in housing base. For further details about electrical
connection please see chapter „Connecting diagrams“.
If the sensor is mounted in correct manner and connected
with the right cable (accessory), you can attach the wires to
power supply and signal outputs to data acquisition equipment
(computer).
The typical power supply requirements of the
u[sonic]WS7
sensor are 24 Volts with a maximum current drain of 50 mA.
The input range is max. 6... 60 V
DC
.
The heating of the u[sonic]
WS7 is supplied with 24 V
DC
. When the heating is activated,
the current consumption increases to a maximum of 10 A.
The output signal of the sensor corresponds to the RS-485
standard in talker mode, whereby only the transmit lines
(TX) are used. The line drivers are capable of transmitting
data over cable lengths up to 1,220 meters (4,000 feet). This
maximum distance will vary depending upon the ope-rational
environment, the wire gauge used, and the baud- rate of the
attached devices.
When the power supply of the sensor is switched on, after
5 seconds the sensor cyclically starts sending data protocols.
2.7.3 Safety
regulations
Because the wind sensor often is mounted on ex-
posed locations in dangerous heights the installation
personnel has to pay attention to the relevant safety
regulations for such works. During the electrical
installation and termination works the external circuit-
breaker must be switched o
ff
.It is not permitted to
open those housings by unauthorized persons!
3 Maintenance
3.1
Regular maintenance and calibration
The sensor u[sonic]WS7 is service reduced and designed for
a very long lifetime. Recommended is a regular visual check
regarding dirt of surface caused by the weather and if so, to
clean up. The radiation sensor glass dome should be cleaned
with a soft towel at least every 2 weeks. For stubborn stains,
the glass dome can be handled with soapy water or alcohol.
If reference measurements should be necessary
stringently must be noted that a comparability of the
measured values is given only if the measurements
take place under same conditions. I.e. the reference
equipment must be used very close to the sensor!
The sensor is a measuring instrument and thus apply user
speci
fi
c standards regarding period of recalibration.
Recommendation: 2 years.
We recommend to have the
fi
lter cap of the humidity-tem-
perature sensor every two years exchanged in our plant.
Depending on the application shorter maintenance cycles
could be necessary.
3.2
Visual check and cleaning
The use of the sensor under the respective environmental
conditions requires certain steps. It is thus recommendable
to clean the outside of the housing and shelter within speci
fi
c
intervals. The intervals are dependant on the environmental
conditions and the degree of soiling. We recommend a regular
sight and functional check.
In case you should be faced with any speci
fi
c problems please
contact the LAMBRECHT meteo service under:
Tel.: +49-(0)551-4958-0
Fax: +49-(0)551-4958-327
E-Mail: [email protected]
4 Transports
In case it is necessary to ship or to transport the sensor must
be carefully packed to prevent damages during transport.
4
