GAOTek Formaldehyde Gas Detector

GAOTek Formaldehyde Gas Detector Providing protection from up to 4 potential atmospheric hazards.




GAOTek Formaldehyde Gas Detector Providing protection from up to 4 potential atmospheric hazards including oxygen, combustible and toxic gases, the types of gases for detection are more than 500 types, MS400 is unparalleled in its versatility, capability and overall value.




  • Detects 1-4 gases among 500+ types simultaneously
  • Displays data in 7 units PPM, mg/m3, Vol%, LEL%, PPHM, ppb, mg/l
  • Features a 2.5-inch HD colour screen with various information
  • Graphically displays gas concentration trends over time
  • Simultaneously displays five gas concentrations, offering three display modes
  • Stores up to 100,000 entries with real-time or alarm-based storage
  • Supports data viewing, deletion, and upload via USB and RS485
  • Includes humidity dust filter for accurate readings
  • Multiple alarm modes: sound, light, vibration, and visual on-screen
  • Alarm types: concentration, under-voltage, and failure alarms
  • Alarm settings: low, high, interval, weighted average
  • Zero-point auto-tracking for long-term accuracy
  • Multi-level calibration for linearity and precision
  • Logs calibration, repairs, failures, and sensor life
  • Data recovery and mis-operation prevention
  • Ensures performance despite human errors



Technical Specifications

Measuring range TVOC: 0 ppm to 10 ppmCH2O: 0 ppm to 10ppm

Other ranges can be customized

Resolution TVOC: 0.01 ppmCH2O: 0.0 1 ppm

Other resolution can be customized

Sensor type CH2O: ElectrochemicalTVOC: Thermal conductivity

Other Sensor: catalytic combustion, infrared, thermal conductivity, PID photoionization, and so on.

Depending on the type of gas, range, field environment and user demand.

Other sensors can be customized.

Measuring type Built-in Pump suction
Response time T90 < 30 s
Display 2.31 inch high-definition colour screen
Alarm method Sound & light alarmVibration alarm

Sound & light + vibration alarm

Turning off the alarm

Battery DC 3.7 V, 4500 mA high-capacity rechargeable polymer battery
Data storage Standard capacity is 100, 000 entries
Working humidity ≤10% RH to 95% RH
Housing Rubber enclosure
Standard accessories Manual, qualification certificate, warranty card, USB charger (including the data cable), belt clip, colourful packaging box (optional high-grade aluminium instrument case)
Ex grade  Ex ia IIC T6 Ga   Intrinsically safe type
Ingress protection IP 65
Working temperature -40 °F to 158 °F (-40 ℃ to + 70 ℃)
Weight 0.66 lb (300g)


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