Overview

This 4-in-1 Multi-Gas Detector is a portable and reliable safety device designed to continuously monitor Oxygen (O₂), Combustible Gas (LEL), Carbon Monoxide (CO), and Hydrogen Sulfide (H₂S). Equipped with a clear LCD, it shows real-time concentration levels for all four gases simultaneously. The detector features user-configurable high and low alarms, along with STEL and TWA alarm functions, ensuring comprehensive safety monitoring. With both audio and visual alerts, it provides instant warnings when gas levels exceed safe limits. Compact, rechargeable, and durable, this detector is ideal for industrial, commercial, and confined space applications.

Features

Detects 4 types of gases: Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), Oxygen (O₂), and Combustible Gas (LEL).
Made with premium materials and top-quality electronic components for high sensitivity and accurate measurement.
Compact, lightweight, and ergonomic design for convenient carrying and use.
Built-in 2500mAh lithium-ion battery supports up to 8 hours of continuous operation (about 6 hours with an external gas sampling pump).
Backlit display ensures clear visibility even in dark environments.
Dual alarm modes: audio alerts and on-screen icons.
Multiple functions, including gas monitoring, peak value display, low alarm setting, high alarm setting, and TWA alarm mode.
Ideal for use in petroleum, chemical, metallurgy, refining, and other industrial environments.

Technical Specifications

Type	Multi-Gas Meter
Color	Yellow
Material / Housing	ABS, rugged and impact-resistant
Detected Gases & Ranges	– Carbon Monoxide (CO): 0–999 ppm – Hydrogen Sulfide (H₂S): 0–500 ppm – Oxygen (O₂): 0–30% VOL – Combustible Gas (LEL): 0–100%
Detection Principle	Electrochemical (CO, H₂S, O₂), Catalytic combustion / Semiconductor (Combustible Gas)
Resolution	CO: 1 ppm H₂S: 1 ppm O₂: 0.1% VOL Combustible Gas: 1% LEL
Accuracy / Precision	±2–3% FS
Response Time (T90)	≤ 15 seconds
Recovery Time	≤ 60 seconds
Sensor	High-precision imported multi-gas sensors
Sensor Lifetime	2–3 years typical (depending on usage)
Operation Current	220 mA
Short Circuit Current	≤ 3 A
Operation Voltage	3.7 V
Maximum Open Circuit Voltage	≤ 4.2 V
Battery Type	Rechargeable Lithium Battery
Battery Capacity	2500 mAh
Battery Life	15–20 hours continuous operation
Charging Time	4–6 hours
Display Type	Segment-type LCD with backlight
Alarm Modes	Audible (≥90 dB), Visual (LED), Vibration
Alarm Thresholds	Configurable per gas
Operating Temperature	50°F to 122°F (10°C to 50°C)
Storage Temperature	32°F to 104°F (0°C to 40°C)
Operating Humidity	15% ~ 95% RH (non-condensing)
Ingress Protection	IP65 dust and water-resistant
Dimensions	135 × 70 × 35 mm (approx.)
Weight	~250 g
Data Logging	Optional, up to 30 days of readings
Communication / Interface	Optional USB / Bluetooth for PC or mobile integration
Usage Scenarios	Industrial safety, oil & gas, chemical plants, mining, confined spaces, laboratories
Optional Features	Multi-gas monitoring, real-time mobile app integration, alarm history, automatic calibration