This G90 4-1 Multi-Gas Detector is a portable detection instrument that can be equipped with single or multiple gas sensors to detect various gases depending on the sensor types. The product can continuously monitor the concentration of gases in the ambient air, effectively ensuring the safety of workers and preventing damage to production equipment. This product is compact, easy to operate, convenient to carry and has good vibration resistance. lt uses high-resolution dot matrix LCD display technology, providing a more intuitive and clear display.
It's suitable for use in areas with explosive gas mixtures of zone 1 and 2 with categories ll A, ll B, ll C, and temperature groups T1 to T4: dust-tight enclosures are used for zone 21 and 22.
Functions Features
Technical Parameters
Detection method
Natural diffusion type
Sensor life
2 years (catalytic combustion type and electrochemical type)
Ambient temperature
-10°C to +55°C
Relative humidity
＜93%
Explosion-proof method
Intrinsically safe type
Explosion-proof mark
Ex ia ⅡC T4 Ga; Ex ib ⅢC T130°C Db
Protection level
IP65
Explosion-proof certificate number
CLEx24.1023
Display method
LCD liquid crystal display
Alarm method
Three-level warning of sound, light and vibration
Power supply voltage
DC 3.7V
Battery capacity
2400mAh lithium-ion rechargeable battery
Charging time
≤6h
Working time
≥8 hours continuously (in non-alarm standby state)
Product weight
Approximately 130g (excluding portable accessories)
Product size
L 78mm×W 71.5mm×H 28mm
Upload interface
Magnetic USB interface
Common Gas Parameter listing
Gas detected
Measuring Range
Optional Range
Resolution Rat
Response Time
LEL -combustible gas
0-100%LEL
0-100%VOL（Infrared or catalytic ）
1%LEL/1%vol
≤10s
carbon monoxide
0-1000PPm
0-500/2000/5000PPm
0.1/1PPm
≤10s
TVOC
0-100PPM
0-100PPM
0.1PPm/1PPM
≤15s
hydrogen
0-100%LEL
0-1000PPM
1%LEL/1PPM
≤15s
natural gas
0-100%LEL
0-100%LEL
1%LEL
≤10s
Oxygen-O2
0-30%VOL
0-30%、0-100%VOL
0.1%vol
≤10s
ozone
0-10PPm
0-20、100PPm
0.01PPm/0.1PPM
≤15s
hydrogen sulfide-H2S
0-100PPm
0-50、200、1000PPm
1/0.1PPm
≤10s
Methane-CH4
0-100%LEL
0-100%VOL
1%LEL/1%vol
≤10s
fluorine
0-10PM
0-1、10PPM
1/0.1PPm
≤15s
hydrogen chloride
0-20PPm
0-20/50PPm/100PPM
0.01/0.1PPm
≤15s
Nitrogen-N2
0-30%VOL
0-30%VOL、100%VOL
0.1%LEL/1PPM
≤10s
hydrogen
0-100%LEL
0-1000PPm
1%LEL/0.1PPm
≤15s
chlorine
0-20PPm
0-10、100PPm
0.1PPm
≤15s
ammonia gas
0-100PPm
0-50、500、1000PPm
1/0.1PPm
≤15s
oxynitride
0-20PPm
0-50、1000PPm
0.1/1PPm
≤15s
methanal
0-20PPm
0-50、100PPm
1/0.1PPm
≤15s
sulfur dioxide
0-20PPm
0-50、1000PPm
0.1/1PPm
≤15s
nitric oxide
0-250PPm
0-500、1000PPm
1PPm
≤15s
nitrogen dioxide
0-20PPm
0-50、1000PPm
0.1/1PPm
≤15s
phosphine
0-20PPm
0-20、100PPm
0.1PPm
≤15s
acrylonitrile
0-100PPM
0-100PPm
0.1/1PPm
≤15s
carbon dioxide
0-5000PPm
0-1%/5%/10%VOL(Infrared )
1PPM/0.01%VOL
≤15s
hydrogen fluoride
0-10PPm
0-1、10、50、100PPM
0.01/0.1PPm
≤15s
Xylene/methylbenzene
0-20PPm
0-5、10、50、100PPm
0.01/0.1PPm
≤15s
oxirane
0-100PPm
0-100PPm
1/0.1PPm
≤15s
For other gases and measuring ranges, please contact us directly!
Get In Touch
Please feel free to submit your inquiry information to us! our sales manager will contact with you as soon as possible.
