MSA
Installation
ULTIMA X ® Series
32
GB
Instructions for electrical connection
-
Twisted cable pair of a quality suitable for measuring instruments is recom-
mended. Use shielded cable if there are any electromagnetic or other sources
of interference [such as motors, welding appliances, heating appliances, etc.].
-
Always observe maximum cable lengths and cross-section [
-
Water or impurities can penetrate the instrument through the cable. In hazar-
dous areas, it is recommended to install the cable in a loop just before entry into
the instrument or to slightly bend it to prevent water from entering.
-
Details on the correct input voltage are given under power supply in the "Various
technical data" table in chapter 7.
The connections for the power supply, earthing and signal output are marked on the
back of the Gas Monitor electronics assembly.
2-wire cable is suitable for:
-
Models for detecting toxic gases with 4-20-mA output
Models for detecting oxygen with 4-20-mA output
3-wire cable is required for all:
-
Models for detecting combustible gases
Models for detecting toxic gases and oxygen with 4-20-mA output, which must
be operated with additional functions [relay etc.].
Instruments from the ULTIMA X
®
Series are installed at the place of installation on
a mounting plate.
