Connecting The Device - Siemens SITRANS P LH300 Compact Operating Instructions

Note
Improvement of interference immunity
• Lay signal cables separately to cables with voltages > 60 V.
• Use cable with twisted wires.
• Keep the device and the cables at a distance from strong electromagnetic fields.
5.2

Connecting the device

Procedure
①
②
Figure 5-1
1. Connect the cable of the pressure transmitter to the terminals as follows:
– Blue (-)
– Brown (+)
– Black (protective conductor connection/potential equalization)
2. Insert the ventilation pipe
The ventilation pipe must be connected to the atmosphere. The humidity filter is used for this
purpose
SITRANS LH300 Transmitter for Hydrostatic Level
Compact Operating Instructions, 11/2022, A5E37897183-AD
Ventilation pipe or ventilation pipes
Connection to transmitter
Cable box (example for applications in hazardous area)
①
③
.
③
Humidity filter
④
Connection to measured value processing
into the cable box.
Connecting
5.2 Connecting the device
21