
GASMAX CX Operation & Maintenance Manual, Revision 1.0
Page 34
9
SPECIFICATIONS
Model
GASMAX
CX
Single
/
Dual
Channel
Gas
Monitor
Power
Input
10
‐
30VDC
at
<
10
watts
with
relay
board.
Additional
power
required
for
Extended
Temp
&
GDS
‐
IR
option.
Display
Full
color
LCD
with
engineering
units,
bargraph
and
30
‐
minute
trend
Channel
One
Input
Digital
input
for
GDS
Corp
10
‐
98xx
Smart
Toxic
Sensors
Bridge
input
for
GDS
Corp
10
‐
98xx
Catalytic
Bead,
SmartIR
or
PID
sensors
Analog
4
‐
20mA
input
Channel
Two
Input
Digital
input
for
GDS
Corp
10
‐
98xx
Smart
Toxic
Sensors
Analog
4
‐
20mA
input
Accuracy
+/
‐
5%
of
full
scale
(typical)
Standard
Output
Dual
three
‐
wire
4
‐
20mA
current
source
outputs
with
fault
and
overrange
indication.
Maximum
loop
resistance
is
750
ohms
with
standard
24VDC
supply
Optional
Output
Relay
/
MODBUS
interface
with
4x
5A
SPDT
programmable
alarm
relays
Dual
channel
MODBUS
interface
Temperature
Electronics
‐
40°C
to
+60°C.
See
Sensor
Manual
for
additional
details
Memory
On
‐
board
non
‐
volatile
memory
retains
all
user
settings
Housing
Aluminum
housing
with
epoxy
paint
standard;
#316
stainless
steel
optional
One
¾”
NPT
female
connection
for
local
sensor
head
Two
¾”
NPT
female
connections
for
conduit
or
cable
glands
Dimensions
Width
5.4”
(137
mm),
Height
8”
(203
mm),
Depth
5”
(127
mm)
Shipping
weight
6.5
pounds
(3
kg)
Approvals
CSA
Certified
Division
1
&
2
Groups
B,
C,
D.
Suitable
for
explosion
‐
proof
installations
with
flame
arrestor
Warranty
Two
years
on
electronics,
one
year
on
sensor