GX-3R

Gas to be detected

Combustible gas (CH4or HC)
Oxygen(O2)
Carbon monoxide(CO)
Hydrogen sulfide (H2S)

Detection principle
New ceramic type
Electrochemical type

Detection method
Diffusion type

Detection range
0～100%LEL
0～40.0%
0～2000ppm
0～200.0ppm

Resolutions
1%LEL
0.1%
1ppm
0.1ppm

Alarm set point value

1stalarm：10%LEL2ndalarm：25%LEL3rdalarm：50%LELOVER alarm：100%LEL
1stalarm：19.5%2ndalarm：18.0%3rdalarm：23.5%OVERalarm：40.0%
1stalarm：25ppm
2ndalarm：50ppm
3rdalarm：1200ppm
TWAalarm：25ppm
STEL alarm：200ppm
OVER alarm：2000ppm
1stalarm：5.0ppm
2ndalarm：30.0ppm
3rdalarm：100.0ppm
TWA alarm：1.0ppm
STEL alarm：5.0ppm
OVER alarm：200ppm
Gas alarm display
Lamp blinking, continuous modulating buzzer sounding, gas concentration display blinking and vibration
Gas alarm pattern
Self-latching
Fault alarm
System abnormalities, sensor abnormalities, battery voltage drop and calibration failure
Fault alarm display
Lamp blinking, intermittent buzzer sounding and detail display
Fault alarm pattern
Self-latching
Concentration display
LCD digital (7-segment + 14-segment + Icon) ,Backlight
Displays
Operating state, Clock,Temperature, Peak value, Calibration expiration date
Buzzer
Approx. 95 dB (at 30 cm)
Confirmation beep
Operation：OFF, LED, BUZZER,LED＋BUZZERselectable（The default setting is “OFF”）
Interval：can be selected from 30 sec. to 99 minutes（The default setting is “5 minutes”）
Data logging
300 hours（adjustable）3600 event logsCanbe read out with IrDA
Battery
Lithium ion battery< 3 hour charge time
Warm-up time
2 minutes
Continuous
operating time
Approx. 40 hours (with long-battery, at 25℃, no alarm, no lighting)
Approx. 25 hours (at 25℃, no alarm, no lighting)
OperatingTemperature range
-40～+60ºC at a constant condition(intermittent)
-20～+50ºC at a constant condition(continuous)
Operating
Humidity range
0～95%RH non-condensing(intermittent)
10～90%RH non-condensing(continuous)
IP rating
IP66/68
Dimensions/Weight
Approx. 58(W)×65(H)×26(D)㎜（projection portions excluded）/ Approx. 100g