ENMET EX-6165 - Manual (Page 8)

EX-6120, 6165 SERIES IR ENMET Corporation
5
Figure 5: Unplugging the Display Board for Connection Purposes
3.2 Power Supply
The EX-6120, 6165 S ERIES IR is powered from an 8 – 24 volt dc, 5 W maximum output supply. This may be either:-
a) An independent supply powering one or more units.
b) A supply that is an integral part of a control card within a monitoring panel.
3.3 Analogue Output
The analogue output provides a means of indicating to external equipment (e.g. data loggers, remote displays, control
cards) the gas levels currently being detected by the system. The output is in the form of the industry standard 4 to
20mA current source.
The analogue output is factory set such that 4mA represents zero gas and 20mA represents the full scale gas level of the
EX-6120, 6165 S ERIES IR .
Figure 6: Analogue Output
3.4 RS232 Output
This output is designed to be compatible with a PC fitted with an RS232 serial communications port. Suitable software
is available for installation in the PC. Contact
ENMET Corporation for details.
Figure 7: EEx d Conduit Installation
Important
Connect enclosure
earth-ground to a high
integrity earth-ground
ATEX Certified compound-filled
conduit seals (stopping boxes)
- +
PSU
- +
Aout
0
V
R
x
T
x
RS232
Conduit Conduit
Mount vertically
as shown
N
/O
C
O
M
N
/C
Relay 1
Alarm 1
N
/O
C
O
M
N
/C
Relay 2
Alarm 2
N
/O
C
O
M
N
/C
Relay 3
Fault
EX-6120,
6165
0V
A+
0V
12-24V DC
Control
Unit
I (4-20mA)
PSU