Honeywell ST 800 - 2 Application Design; 2.1 Overview; 2.2 Safety; 2.2.2 Diagnostic Messages

SmartLine Pressure Transmitter
December 2016 Quick Start Installation Guide 15
EXPLOSION-PROOF CONDUIT SEAL
When installed as explosion proof in a Division 1 Hazardous Location, keep
covers tight while the Transmitter is energized. Disconnect power to the
Transmitter in the non-hazardous area prior to removing end caps for service.
When installed as non-incendive equipment in a Division 2 hazardous location,
disconnect power to the Transmitter in the non-hazardous area, or determine
that the location is non-hazardous before disconnecting or connecting the
Transmitter wires.
Transmitters installed as explosion proof in Class I, Division 1, Group A Hazardous
(classified) locations in accordance with ANSI/NFPA 70, the US National Electrical
Code, require a LISTED explosion proof seal to be installed in the conduit, within 18
inches (457.2mm) of the Transmitter. Crouse-Hinds type EYS/EYD or EYSX/EYDX
are examples of LISTED explosion proof seals that meet this requirement.
Transmitters installed as explosion proof in Class I, Division 1, Group B, C or D
hazardous (classified) locations do not require that explosion proof seal be installed
in the conduit.
Step
Action
1
See Figure 11, above, for parts locations.
2
Remove the end cap cover from the terminal block end of the Electronics
Housing
3
Feed loop power leads through one end of the conduit entrances on
either side of the Electronics Housing. The Transmitter accepts up to 16
AWG wire.
4
Plug the unused conduit entrance as specified in Table 1.
5
Connect the positive loop power lead to the positive (+) terminal and the
negative loop power lead to the negative (-) terminal. Note that the
Transmitter is not polarity-sensitive.
6
Replace the end cap, and secure it in place using a 1.5mm hex wrench.