Combustible gases: 0
-100% LEL in 1%
increments
Hydrogen: 0 - 1999
ppm in 1 ppm
increments
Oxygen: 0 - 30.0% by
volume in 0.1%
increments
Ammonia: 0 - 200 ppm
in 1 ppm increments
Carbon Monoxide: 0 -
999 ppm in 1 ppm
increments
Hydrogen Sulfide: 0
- 500 ppm in 1 ppm
increments
Sulfur Dioxide: 0.2
- 99.9 ppm in .01
ppm increments
Hydrogen Cyanide: 2
- 30 ppm in 1 ppm
increments
Hydrogen Chloride:
0.2 - 30.0 ppm in
.01 ppm incr.
Phosphine: 0 - 1.00
ppm in .01 ppm
increments
Nitrogen Dioxide:
0.2 - 99.9 ppm in
0.1 ppm increments
Nitric Oxide: 0.0 -
99.9 ppm in 0.1 ppm
increments
Chlorine: 0.2 - 99.9
ppm in .01 ppm
increments
Chlorine Dioxide:
.02 - 1.00 ppm in
.01 ppm increments
Display:
Dual-channel
split-screen LED
display (4 digit, 7
segment arrangement
per channel)
provides
simultaneous display
of one or two gases.
Input Voltage:
12-28 VDC operating
range (24 VDC
typical)
Input Current
(max.):
Toxic Gas / Oxygen:
150 mA @ 24 VDC
(single gas)
Combustible gases
(Catalytic): 175 mA
@ 24 VDC, 0.6
A peak (single gas)
Combustible gases
(Infrared): 150 mA @
24 VDC, 0.6
A peak (single gas)
Combined
catalytic/infrared:
280 mA @ 24 VDC (two
gas)
Signal Output:
4-20 mA, linear
analog) and ModBus
RTU (digital)
RS485 digital
communication with
ModBus RTU
software protocol
system at 9600 baud.
Three or four
wire system capable
of accommodating
over 200
devices in bus
configuration.
Address selection
through on-board
8-position
dipswitch.
Alarm Relays:
3 alarm relays:
Fault, plus 2
user-programmable
relays, SPST, NO or
NC (relay-option
versions)
Contact Capacity:
5 Amps @ 30 VDC
Temperature
Range:
-4°F to +104°F
(-20°C to +40°C),
typical
-40°F to +167°F
(-40°C to +75°C) -
Catalytic LEL
Humidity Range:
15-90% RH
(non-condensing),
typical
APPROVALS
NRTL/c: Class I,
Div. 1, 2, Groups B,
C, D
CSA: Class I, Div.
1, 2, Groups B, C, D
CENELEC (ATEX): EEx
d IIB
Australia: EEx d IIC
T4
China: GB 3836.1-Ex
d IIC T4; LEL
version
GB15322-94 Fire
protection
India: CCoE - Nagpur
