
Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 53
Galvanic Isolation of the Power Supply
If galvanic isolation of the power supply line from the output signals is
needed, PTU300 can be ordered with optional galvanic isolation module.
This module prevents harmful grounding loops.
NOTE
alvanic isolation module is not needed when using the AC power
Note also that these two modules are physically
incompatible to be installed at the same time. If both modules are
installed, there is no room to close the transmitter cover completely.
0506-030
Figure 28 Galvanic Isolation Module
Number refers to Figure 28 above:
Galvanic isolation module
Third Analog Output
0503-030
Figure 29 Third Analog Output
The following numbers refer to Figure 29 above:
Screw terminals for signal line
DIP switches to select the output mode and range
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