ENMET EX-6165 - Manual (Page 5)

EX-6120, 6165 SERIES IR ENMET Corporation
2
2.0 Features of the EX-6120, 6165 S
ERIES
IR
The EX-6120, 6165 S ERIES IR is an ATEX and IECEx certified fixed gas detector for use in potentially explosive
atmospheres. The unit may be optionally fitted with a protective weather guard as shown in the photograph.
The unit comprises an instrument housing having two cable gland entries and containing the connection terminals, electronics and
display window.
The housing containing the gas sensor has an M27 thread and is screwed into the bottom of the unit. The sensor housing itself is a
certified component and must not be removed in service.
Behind the display window are- See Figure 1 for location of features:
Feature Description
Display A 4-digit LCD display
Magnetic Switches Four magnetically operated switches that are activated through the display window using a magnetic
pen that is supplied with the unit.
Visual Indicators LED indicators for POWER, ALARM & KEY PRESS
Power supply 8 to 24 volts dc (non-intrinsically safe)
Analogue output 4 to 20mA dc
Communications Output RS232
Relay Relay version has 3 factory-fitted relays. Each provides a set of voltage free changeover contacts to
perform the following control functions contact outputs for Alarm Level 1, Alarm Level 2 and Fault
Gland (Strain Relief) entry threads available – 20mm, ½” or ¾” NPT
Magnetic switches control the instrument maintenance functions. The magnetically operated switches allow the unit to
be calibrated while power is still applied without the need to remove the cover from the unit.
Versions without relays fitted are also available.
The self-adhesive label on the outer surface of the enclosure indicates whether or not the relays are fitted as shown below:
IMPORTANT – When used in environments where the instrument is exposed to salt spray or diesel it is recommended
that the EX-6120, 6165 S ERIES IR is always fitted with its protective weather guard. The weather guard is
attached with tamperproof screws to ensure that it is not inadvertently removed.
Figure 1: EX-6120, 6165 S ERIES IR Features
GAS DETECTOR TYPE
CONTROL RELAYS FITTED
GAS DETECTOR TYPE
NO CONTROL RELAYS FITTED
2 x 0.27 (2 x 7) dia.
Mounting Holes
Optional
Weatherguard
Inlet/Outlet
Port 1 of 2
Display
Menu Switches
Power & Alarm LEDs
Inlet/Outlet
Port 1 of 2
MENU UP DOWN ENTER