Vaisala DMT346 - Manual (Page 42)

User's Guide _______________________________________________________________________
42 ___________________________________________________________________ M210762EN-G
Transmitter Housing Grounding
In case you need to ground the transmitter housing, the grounding
connector is found inside the housing; see Figure 1 on page 22. Note
anyhow that the probe is connected to the same potential as the housing.
Make sure that different groundings are made to the same potential.
Otherwise harmful ground currents may be generated.
If it is needed to have galvanic isolation of the power supply line from
the output signals, DMT345/346 can be ordered with optional galvanic
isolation module. This module prevents harmful grounding loops.
Signal and Power Supply Wiring
When connecting transmitter with 8-pin connector, see section 8-Pin
Connector on page 62.
0605-028
Figure 26 Screw Terminal Block on the Motherboard
The following numbers refer to Figure 26 above:
1 = Supply terminals POWER 10 ... 35 VDC = 24 V~
2 = User port (RS-232 terminals)
3 = Analog signal terminals
WARNING Make sure that you connect only de-energized wires.