GAOTek Portable Multi Gas Detector

GAO Tek Portable multi-gas detector is an intelligent high-performance detection alarm that can continuously detect and monitor volatile organic compounds VOC, TVOC, combustible gases, toxic and harmful gases, and with function of people falling alarm.




 GAO Tek Portable multi gas detector an intelligent high-performance detection alarm that can continuously detect and monitor volatile organic compounds VOC, TVOC, combustible gases, toxic and harmful gases and with function of people falling alarm. The detector adopts more than 30 kinds of smart sensors, including imported PID optical sensor, electrochemical sensor, oxygen, catalytic combustion sensor and infrared flammable sensor, CO2 sensor, CH4 sensor, which can detect 4 kinds of toxic at the same time.  



  • High-performance sensor  
  • Active pump suction with quick response 
  • Built-in temperature and humidity sensors 
  • Intelligent calibration for accuracy 
  • User-friendly interface with colour screen 
  • Flexible unit options and language support 
  • Long-lasting lithium battery 
  • Rugged, waterproof design (IP 66) 
  • Ample data storage with recovery option 


Technical Specifications

Working principle  Electrochemical, infrared, PID, catalytic combustion (Depending on detected gas) 
Detection range  0 ppm to 1 ppm, 0 ppm to 10 ppm, 0 ppm to 50 ppm, 0 ppm to 100 ppm, 0 ppm to 200 ppm, 0 ppm to 500 ppm, 0 ppm to 1000 ppm, 0ppm to 2000 ppm, 0 ppm to 5000 ppm, 0ppm to 10000 ppm, 0ppm to 50000 ppm, 0 ppm to 100% LEL, 

0% VOL to 5% VOL, 0% VOL to 10% VOL, 0%VOL to 30% VOL, 0% VOL to 100% VOL (optional) 

Resolution  0.01 ppm (0 ppm to 100 ppm) 

0.1ppm (0ppm to 1000 ppm) 

1ppm (>1000 ppm) 

0.1% LEL 

0.01% VOL 

Sampling method  Active pump suction, built in air pump can open or close independently 

Flow speed: 500mL/min 

Accuracy  ≤±3% F.S. 
Repeatability  ≤±1% 
Zero drift  ≤±1% (F.S./year) 
Response time  ≤20 s (T90) 
Recovery time  ≤30 s 
Shell material  Engineering plastics + 304 stainless steels + high-strength wear-resistant and corrosion-resistant aluminium alloy 
Battery  Standard 11000 Mah capacity lithium battery, more than 24-hour continuous working time, charging time less than 9 hours, support mobile power supply and charging, USB port mobile phone charger compatible. 
Charger  USB quick charger 
Alarm method  Sound alarm 95 dB@30cm, red LED alarm light, personnel falling alarm, short distance wireless and long distance GPRS alarm. 
Alarm value setting  A1 alarm value, A2 alarm value 

TWA, STEL and low concentration alarm values can be set individually. 

Screen  2.3-inch TFT 
Backlight  Manual, automatic when alarming 
Button  7 buttons navigation 
Direct reading  Measured value, data logging status, pump working status, environment temperature and humidity, maximum value, minimum value, 

average value 

Data storage  Auto storage, manual storage and single point storage. Storage interval can be customised and 300,000 groups data that can be 

stored with date/time data, if matching micro-SD memory card, then can store 10 million or more; with data recovery function can 

choose part or all of data recovery. 

Data transmission  Support USB and RS232 serial port measurement data download and transmission, support GPRS wireless transmission or short distance 

RTU433 wireless transmission (optional) 

Data print  Support micro-portable printer, Bluetooth wireless printing. (optional) 
Calibration  2 levels to 4 levels of the target-point automatic calibration, can set the calibration certified value, zero setting. 
Explosion proof  ExdⅡCT4 Ga (Intrinsically Safe) 
Protection class  IP 66 (water and dust proof) 
Operation mode  User mode, administrator mode 
Working humidity  0 RH to 95%RH (Non-condensing) 
Standards  GB 12358-2006, GB 3836.1-2010, GB 3836.4-2010 
Working temperature  -40 °F to 158 °F (-40 ℃ to 70 ℃) 
Dimensions   10.63 in x 7.60 in x 4.17 in (270 mm × 193 mm × 106 mm) 
Weight  5.51 lb (2.5 kg) 


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