Vaisala PTU300 Guide de l'utilisateur Page 41

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Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 39
Grounding the Transmitter Housing
In case you need to ground the transmitter housing, the grounding
connector is found inside the housing; see Figure 2 on page 25. Make
sure that the probe is connected to the same potential as the housing, and
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, PTU300 can be ordered with optional galvanic
isolation module. This module prevents harmful grounding loops.
Alternate Wiring Systems
There are three optional ways to connect the transmitter: using basic
wiring, using 8-Pin connector, or using D-9 connector.
The wiring system is selected when ordering the device. If a connector is
needed for wiring, it is set at the factory.
- When using basic wiring, see section Signal and Power Supply
Wiring.
- When using 8-Pin connector, see section 8-Pin Connector on page 41.
- When using D-9 connector, see section D-9 Connector on page 42.
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