Vaisala PTU300 Podręcznik Użytkownika Strona 37

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Chapter 3 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 35
1. Cut back outer sheath to desired length.
2. Cut back screen braiding or screen foil to dimension X (see figure
3).
3. Push the domed cap nut (item 1) and the seal insert with contact
socket of the gland (item 2+3) onto the cable as shown in the
diagram.
4. Bend over the screen braiding or screen foil by about 90º (item 4).
5. Push the seal insert with the contact socket of the gland (item 2+3)
up to the screen braiding or screen foil.
6. Mount lower part (item 5) on the housing.
7. Push the seal with the contact socket of the gland (item 2+3) and
flush into the lower part (item 5).
8. Install the domed cap nut (item 1) onto the lower part (item 5).
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 21. 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 output 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 37.
- When using D-9 connector, see section D-9 Connector on page 38.
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