Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 45)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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5.6 Detector Wiring (see appendix D if EExde version used)
This section does not attempt to cover all of the standard practices and codes of
installation. It emphasizes specific points providing the basic concept for qualified
wiring installation personnel.
Warning!
Do not separate or close the housing section from
the cover while the power is at “on” position.
Caution!
It is very important that the Cover and Housing sections be exposed
to the environment for the least amount of time due to the internal
circuitry. Proper planning of the wiring is required in order to reduce
the amount of time the Cover and Housing sections are apart.
5.6.1 Conduit/Cable Installation
1. To avoid water condensation in the detector, it should be installed with the
conduits/electrical entries facing downward.
2. When using the Swivel Mount or Duct Mount, use flexible conduits for the
last portion connecting to the detector.
3. When pulling the cables through the conduits, ensure that they are not
tangled or stressed. Extend the cables about 12 in. (30cm.) beyond the
detector location to accommodate wiring after installation.
4. After the conductor cables have been pulled through the conduits, perform
a continuity test.