Installation Recommendations; Electrical Connections - Bosch Rexroth WGM Operating Instructions Manual

Set-up and connection 13/46
The display units mounted on a flange can be rotated about 270° around the vertical
axis for better readability of the display.
Please observe the integrated twisting stop. When the stop is reached, you will feel
an increased resistance. Turning beyond this stop can damage the display unit.

4.1.1 Installation recommendations

For the humidity sensor to function properly, ensure that the sensor element is fully
and permanently immersed in the medium.
The sensor is suitable for lateral tank installation if installed below the minimum
filling level. In the event of return line installation ensure that the maximum flow
velocity is not exceeded.
With the WGM-R option, the remote display is mounted onto a profile rail.

4.2 Electrical connections

Voltage supply is provided via plug-in connectors. For installation dimensions,
nominal voltage and pin assignment, please refer to the attachment.
The switching outputs are designed as PNP transistors (see figure):
Supply voltage
Fig. 1: Circuitry of switching outputs
Notice: When measuring the switching output with high-impedance measuring
device inputs or using it as a frequency output, a 10 kΩ resistor must be connected
between the output and the ground (GND) to prevent incorrect measurements.
RE 51550-B/09.2019, Bosch Rexroth AG