Model: HNAG900
Detection: Combustible Gas (Ex) / Hydrocarbons
Detection Principle: Catalytic Combustion / Infrared NDIR
Detection Range: 0-5% LEL, 0-50% LEL, 0-100% LEL, 0-5% Vol
The portable gas concentration detector HANG900 is suitable for real-time and accurate detection of gas concentration and leakage in various environments. Designed for safety engineers and industrial inspectors, this pump-suction type device actively draws air samples to quickly identify potentially explosive atmospheres before they become critical hazards.

For combustible gas (Ex) measurement, accuracy is paramount. The HNAG900 offers highly configurable sensor options, utilizing both Catalytic Combustion and Infrared NDIR principles to cover a wide detection range from 0-100% LEL up to 5% Vol. It features a fast response speed, high measurement accuracy, good stability and repeatability. Whether you are monitoring methane, propane, or other volatile organic compounds, the 32-bit microprocessor and high-speed processing circuits ensure rapid and accurate measurements.

Modern industrial facilities require connected safety solutions. The HNAG900 goes beyond basic alarming by supporting advanced data transmission protocols. It supports Lora wireless transmission mode, allowing real-time gas concentration data to be sent directly to your centralized Gas Alarm Controller or cloud system.

Data tracking is essential for environmental monitoring and compliance. The instrument features mainstream functions like historical data storage, historical alarm storage, data viewing and export.
Massive Storage: Capable of storing up to 100,000 entries and 1000 alarm items.
USB Export: Reserve a USB interface externally; simply use a USB cable to communicate with a computer to achieve data export and deletion.

Equipped with a 3.5-inch TFT screen, the content display is clear and straightforward. The device features a user-friendly resolution of 480*320, allowing operators to easily monitor real-time concentration displays and real-time curves. It also has the function of switching between Chinese and English for display.
To support long shifts during tunnel construction, pipeline maintenance, or plant shutdowns, the instrument is equipped with a built-in 5400mAH lithium battery, ensuring a long standby time.


Safety equipment must withstand the toughest conditions. The HNAG900 features an IP65 protection grade and an Explosion-proof grade of Ex ib ll CT4 Gb, making it perfectly suited for hazardous locations such as petroleum plants, coal mines, and smelting facilities. The device actively draws samples via a built-in pump with adjustable speed, ensuring you can reach deep into confined spaces or valve seams with the included high-temperature sampling handle.
A: By utilizing catalytic combustion and NDIR sensors, the device can accurately detect a wide range of combustible gases (Ex) including Methane (CH4), Propane, and other flammable hydrocarbons up to 100% LEL or 5% Vol.
A: The detector stores up to 100,000 data entries. You can easily export this data to a computer to generate analytical tables using the built-in USB interface and the included Mini-USB cable.
A: Yes. The HNAG900 is intrinsically safe and carries an explosion-proof grade of Ex ib ll CT4 Gb, complying with strict safety standards for hazardous material site safety protection.
A: Under normal use, the effective service life of the sensor of the detector is 1 to 3 years. It is recommended that the sensor be calibrated and inspected regularly every six months or once a year depending on the harshness of your working environment.

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