SOMMER MRL-7, Руководство пользователя

Страница: 56 / 100

55
Figure 17: Wiring of resistance measurement (4-wire PT1000)
The PT1000 in this example is configured in Measurements, table as follows:
9.2 Counter & frequency measurements
The MRL-7 is equipped with two universal counter inputs and one counter input dedicated to wind
speed measurements with an anemometer.
9.2.1 Counting events
The counter inputs 1 and 2 can be used to record counts of different devices. As an example, the wiring
of a tipping bucket rain gauge is illustrated in
Figure 18 .
Figure 18: Wiring of a counter input (tipping bucket rain gauge)
The rain gauge in this example is configured in Measurements, table as follows:
Please note, that in this example the Function has to be set to intensity . This option sets the counter
to 0 if no precipitation is detected.
9.2.2 Frequency measurement
The wind speed input of the MRL-7 – generally used for wind speed measurements – measures the
frequency of an incoming signal.
Figure 19 illustrates the wiring of a combined wind speed/direction
sensor.
Figure 19: Wiring of a frequency input (combined wind speed/direction sensor)