Guangzhou GZAIR Instruments Co., Ltd.
| Payment Terms | D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 10000 pieces per month |
| Delivery Time | 5-8 work days |
| Packaging Details | 48cm*44cm*39.5cm/carton |
| Charging time | 4-5 hours |
| Continuous working time | > 12h |
| Working Temperature | -25℃ ~ +55℃, short time: -40℃ ~ +55℃ |
| Sensor lifetime | infrared: ≥5years; Electrochemical: ≥2 years, Catalytic: ≥1 year |
| Ex proof sign | Exib I |
| Sampling | Natural diffusion |
| IP detree | IP54 |
| Approval | Ex,MA,CMC,CE |
| Standard accessories | USB extension cord, charging adapter, calibration cap, calibration hose, stainless steel clip, hanging cord, leather case, manual |
| Optional accessories | Gas sampling pump, professional suitcase |
| Brand Name | GZAIR |
| Model Number | M203 4 Gas |
| Certification | CE |
| Place of Origin | China |
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Product Specification
| Payment Terms | D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 10000 pieces per month |
| Delivery Time | 5-8 work days | Packaging Details | 48cm*44cm*39.5cm/carton |
| Charging time | 4-5 hours | Continuous working time | > 12h |
| Working Temperature | -25℃ ~ +55℃, short time: -40℃ ~ +55℃ | Sensor lifetime | infrared: ≥5years; Electrochemical: ≥2 years, Catalytic: ≥1 year |
| Ex proof sign | Exib I | Sampling | Natural diffusion |
| IP detree | IP54 | Approval | Ex,MA,CMC,CE |
| Standard accessories | USB extension cord, charging adapter, calibration cap, calibration hose, stainless steel clip, hanging cord, leather case, manual | Optional accessories | Gas sampling pump, professional suitcase |
| Brand Name | GZAIR | Model Number | M203 4 Gas |
| Certification | CE | Place of Origin | China |
| High Light | IP54 waterproof multi gas monitor ，IP54 multi gas monitor ，IP54 multi gas personal monitor | ||
Durable 4-Gas Detector for Oil, Gas & Chemical Industries
nsure worker safety in hazardous environments with the Durable 4-Gas Detector, expertly engineered for the demanding conditions of the oil, gas, and chemical industries. This rugged, portable device offers simultaneous real-time monitoring of Oxygen (O₂), Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), and Combustible Gases (LEL)—four of the most critical gases found in industrial workspaces.
Built with industrial-grade materials, this detector features a shock-resistant, water- and dustproof housing (IP66/IP67 rated), ensuring reliable performance in harsh conditions like offshore rigs, chemical plants, and processing facilities. Its bright LCD display provides clear, immediate readings, while triple alarm alerts—visual LEDs, loud buzzer, and vibration—guarantee fast response during emergencies.
Powered by a long-lasting rechargeable battery, this device supports extended shifts and continuous use in the field. Advanced sensor technology and optional data logging and wireless connectivity make this detector ideal for modern safety compliance and operational efficiency.
Key Features:
Real-time detection of O₂, CO, H₂S, and LEL gases
IP54-rated enclosure for industrial durability
Triple alarm system: visual, audible, and vibration
Rechargeable battery with long operational runtime
Easy-to-read LCD with backlight for low-light use
Suitable for oil rigs, refineries, chemical plants, and tank maintenance
Trusted by safety professionals, this 4-gas detector delivers dependable protection where it matters most.
| Product Model | M203 portable multi gas detector |
| Sensor type | Infrared, catalytic,electrochemical |
| Size & Weight | 130*66*30mm / 300g |
| Battery | Rechargeable lithium |
| Alarms | LED alarm @≥20cm Buzzer alarm ≥95dB @30cm Low power alarm |
| Charging | By AC adapter or 5V USB port |
| Display | Color LCD / OLCD |
| LCD reading | Real-time concentration, battery indicator, time |
| Backlight | Always ON |
| Data logging (optional) | Continuously data logging (1900 data at 0.1-10 configurable interval) |
| Charging time | 4-5 hours |
| Continuous working time | > 12h |
| Working Temperature | 25℃ ~ +55℃, short time: -40℃ ~ +55℃ |
| Sensor lifetime | infrared: ≥5years; Electrochemical: ≥2 years Catalytic: ≥1 year |
| Ex proof sign | Exib I |
| Sampling | Natural diffusion |
| IP detree | IP54 |
| Approval | Ex,MA,CMC,CE |
| Standard accessories | USB extension cord, charging adapter, calibration cap, calibration hose, stainless steel clip, hanging cord, leather case, manual |
| Optional accessories | Gas sampling pump, professional suitcase |
Company Details
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
45,000,000-50,000,000
Employee Number:
500~600
Ecer Certification：
Verified Supplier
Company Overview: At GZAIR, we specialize in providing cutting-edge IoT (Internet of Things) air quality monitoring solutions designed to improve environmental health and ensure safety across a wide range of sectors. From industrial sites and office buildings to schools, healthcare facilities,... Company Overview: At GZAIR, we specialize in providing cutting-edge IoT (Internet of Things) air quality monitoring solutions designed to improve environmental health and ensure safety across a wide range of sectors. From industrial sites and office buildings to schools, healthcare facilities,...
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