AM-ENCT ANALOG MULTIPLEXER ENCLOSURE
3
4. CABLE ROUTING AND DESICCANT
USE
All sensor and datalogger connection cables
should be routed through the conduits on the
lower surface of the enclosure (Figure 1). Each
conduit port includes a two-piece bushing set
and a slip-in reducing plug which seats inside
the external female bushing. The internal
diameter of the bushings is 1.25 inches and the
internal diameter of the reducing plugs is 0.5
inches. The reducing plugs may be removed to
accommodate large diameter cables.
The slip-in reducing plug has a smaller external
orifice that restricts air movement. Sealing the
port after cable installation with a non-
permanent foam or putty is recommended.
Desiccant should be used inside the AM-ENCT
to help reduce water vapor. Desiccant should
be replaced regularly. Desiccant life is
prolonged by plugging the cable entry port with
electrician's putty or foam.
NOTE:
Because lead-acid batteries may
emit explosive hydrogen gas, DO NOT seal
an enclosure containing lead-acid batteries.
Aluminum Plate A (Figure 1) provides a
framework for thermocouple lead wire routing.
Leads should be attached to the strain relief
flange on Plate A then routed around the
outside of the plate to one of the u-shaped slots
opposite an input terminal. Leads should be
routed at least half-way around the enclosure
(Figure 2) to dissipate heat/cold introduced
through conduction along the lead wires.
Sensor, datalogger, and battery cables that
enter the AM-ENCT should be strain-relieved.
The AM416 contains a flange to tie the wires to
for strain relief.
