1.4.5 HART Connection
A HART interface option is available. Refer to Section 13 HART for information.
1.4.6 Remote Alarm Reset
An input is available for connection of remote alarm reset. Section 4.5 Module Address Switch provides the wiring
termination for connecting the remote alarm reset. This only resets local alarms, not Sentry alarms.
1.4.7 Optional Integral Relays
The optional relays are integral to the gas sensor module and are rated as SPDT, 250VAC, 5 Amps* for the High Alarm and
Low Alarm relays and SPDT, 250VAC, 0.25 Amp for the Trouble relay.
* HART option alarm relays are all SPDT, 250VAC, 2 Amp
If the gas sensor module is provided with the optional relays, it will include Terminal P4 on the interface board (Section 4.5
Module Address Switch). Relay output connections are on P4.
1.5 Mechanical
The sensor module is comprised of the following three primary components:
1.5.1 Enclosure
Standard on the 5100-XX-IT is a cast aluminum electrical housing with three ¾” FNPT conduit hubs. The 5100-XX-IT-S has
a 316 Stainless Steel enclosure. Both enclosure covers have a viewing window. The design of the enclosure allows 3-way
mounting choices as shown below.
NOTE:Module installation must be such that it is mounted vertically with sensor pointing downward.
8 SMC 5100-XX-IT Toxic Gas Detector Module
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