RKI Instruments GX-3R Pro - GX-3 R Pro Specifications

9 • Chapter 1: Introduction GX-3R Pro Operator’s Manual
Specifications
Table 1: Standard Sensor Specifications
Combustible Gas, Methane
(CH
4
) Calibration Standard*
Oxygen (O
2
)
Hydrogen
Sulfide (H
2
S)
Carbon
Monoxide (CO)
Detection Range
0 - 100% LEL 0 - 40.0% volume 0 - 200.0 ppm 0 - 2000 ppm
Lower
Detectable
Limit (LDL)
n/a n/a 0.5 ppm 3 ppm
Reading
Increment
1% LEL 0.1% volume 0.1 ppm 1 ppm
Warning
Setpoint
10% LEL 19.5% volume,
decreasing
5.0 ppm 25 ppm
Alarm
Setpoint
25% LEL 18.0% volume,
decreasing
30.0 ppm 50 ppm
Alarm H
Setpoint
50% LEL 23.5% volume,
increasing
100.0 ppm 1200 ppm
STEL Setpoint
n/a n/a 5.0 ppm 200 ppm
TWA Setpoint
n/a n/a 1.0 ppm 25 ppm
Indication
Accuracy
• Continuous environment (-20°C
to 50
°
C): ± 5% of reading or ±
2% LEL (whichever is greater)
• Temporary environment (-40°C
to
-21°C and 51°C to 60°C): ± 10%
LEL
• 0 - 25.0%:
± 0.5% O
2
• 25.1 - 40.0%:
± 3.0% O
2
• 0 - 100 ppm:
± 5% of
reading or ± 2
ppm H
2
S
(whichever is
greater)
• 101 - 200 ppm:
± 20% of
reading
• 0 - 500 ppm: ±
5% of reading or
± 5 ppm CO
(whichever is
greater)
• 501 - 2000 ppm:
± 20% of reading
* The GX-3R Pro is also available set up for general hydrocarbons and calibrated to a combustible gas other than methane,
such as isobutane. Consult RKI Instruments, Inc. for further information.
Table 2: IR Sensor Specifications
Carbon Dioxide (CO
2
)
Detection Range
0 - 10.00% volume 0 - 10,000 ppm
Lower Detectable
Limit (LDL)
0.05% volume 300 ppm