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Portable Gas Detectors

CX-04 Dual Personal Gas Monitor for Oxygen (O2) and Carbon Monoxide (CO)

Dual Oxygen (O2) and Carbon Monoxide (CO) Personal Gas Detector with 3 year Sensor Warranty

A portable gas monitor designed to measure Carbon Monoxide and Oxygen. Small and lightweight it is ideal for wearing in the "Breath Zone " around the head without interfering with work. It has 3-alarm levels which can be user set and a replaceable long-life dual sensor with a 3-year warranty. CX-04 is durable and tough and designed for harsh environments and to deliver many years trouble free operation.

O4 series general features: 

  • Broad line up 10 models with more to follow. 
  • O2, CO, H2S, SO2, Dual O2 / CO, NH3, NO2, HCN, PH3 and CO-H2 models available now. 
  • CO2, CL2 and %LEL Models 2022. 
  • up to 9000 hours battery life.
  • IP 66/67 rated. 
  • Durable 7-meter drop test. 
  • ATEX. 

Series-04 Personal Single Gas Detectors

Product Features

Cost of Ownership

Disposable gas detectors are low cost but users can suffer high failure rates, this can result in safety concerns. Users often find the cost of ownership often outweighs the small initial cost saving over a reliable renewable gas detector. Customers constantly have to replace failed units resulting in personnel down time and the lost productivity.


Facilities such as Oil Refineries, Petrochemical Storage Facilities, Water and Wastewater Treatment plants, Pharmaceutical labs, Utilities, Fire fighting and Chemical Plants are hazardous areas. Workers and Visitors need personal gas protection at all times without the addition of extra bulky equipment. Personal Single Gas Monitors are ideal for this.


Category Portable gas detector
Type Multi Gas
Gas type Toxic/Oxygen
Detection gas CO/O2
Principle of detection Electrochemical type
Detection range 0-300ppm / 300-2000ppm(CO)
Alarm setpoints 1st 25ppm / 2nd 50ppm / 3rd 1200ppm / TWA 25ppm / STEL 200ppm(CO)
L 18.0vol% / LL 18.0vol% / H 25.0vol%(O2)
Sampling method Diffusion
Display of alarm Flashing light / buzzer / vibration
Explosion protected construction Intrinsically safe
IP rating IP66/67 
Approvals IECEx/ATEX/CE 
Power source AAA alkaline or Ni-MH(eneloop) batteries(x2)
Battery life Approx. 4600hours(AAA alkaline)/Approx. 3000hours(Ni-MH)
Dimensions Approx. 54mm(W) x 67mm(H) x 24mm(D)(excluding projections)
Weight Approx. 93g
Operating temperature range -20℃ to +50℃ (no sudden changes)(Approx. 15-minute temporry use environment: -40℃ to +60℃[no sudden changes])
Operating humidity range 10 to 90%RH (no condensation)(Approx. 15-minute temporry use environment: 0 to 95%RH[no condensation])

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