GX-2012 Operator’s Manual
Specifications • 9
Specifications
Table 1: GX-2012 Specifications
Target Gas
%LEL
Combustible
Gas
(Methane
Calibration
Standard)*
% Volume
Combustible
Gas
(Methane
Calibration
Standard)
Oxygen (O
2
)
Hydrogen
Sulfide
(H
2
S)
Carbon
Monoxide
(CO)
Range
(Increment)
0-100% LEL
(1% LEL)
0 - 100% vol
(1% vol)
0-40.0% vol
(0.1 vol%)
0-100 ppm
(0.5 ppm)
0-500 ppm
(1 ppm)
Leak Check
Mode
Range
(Increment)
0-5,000 ppm
(100 ppm)
NOTE: Detection
range is 0-5,000
ppm, but displayed
range can be set to
0-500 ppm, 0-1000
ppm, 0-2000 ppm,
or 0-5000 ppm.
N/A
N/A
N/A
N/A
Sampling
Method
Sample Draw
Response
Time
T90 Within 30 Seconds
Accuracy
± 5% of reading
or ± 2% LEL
(whichever is
greater)
± 5% of
reading or
± 2% full
scale
(whichever
is greater)
± 0.5% O
2
± 5% of
reading or
± 2 ppm H
2
S
(whichever
is greater)
± 5% of
reading or
± 5 ppm
CO
(whichever
is greater)
Display
Digital LCD Display
Gas Alarms
(Factory
Settings)
Alarm 1
10% LEL
Alarm 2
50% LEL
None
Alarm 1
19.5 vol%
(Decreasing)
Alarm 2
23.5 vol%
(Increasing)
Alarm 1
5 ppm
Alarm 2
30 ppm
TWA
1 ppm
STEL
5 ppm
Alarm 1
25 ppm
Alarm 2
50 ppm
TWA
25 ppm
STEL
200 ppm
Operating
Temperature
& Humidity
-20°C to 50
°
C/Below 85% RH (Without Condensation)
www.calcert.com
1.800.544.2843
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