Model: HNAG900-6H
Detection: CO, CO2, NO2, SO2, NH3, H2S
Detection Principle: Electrochemistry / Infrared NDIR
Detection range: CO (0-1000 ppm); CO2 (0-25%VOL); NO2 (0-50 ppm); SO2 (0-50 ppm); NH3 (0-200 ppm); H2S (0-100 ppm)
The HNAG900-6H-Z is a state-of-state portable 6-in-1 gas concentration detector engineered for real-time and accurate detection of hazardous gases in various environments. Boasting an IP65 protection grade and an explosion-proof rating of Ex ib II CT4 Gb, this device ensures unparalleled safety and durability in demanding industrial applications.

Utilizing a combination of highly accurate Electrochemistry and Infrared NDIR detection principles, this multi gas monitor can simultaneously detect up to 6 target gases: CO, CO2, NO2, SO2, NH3, and H2S. It features a fast response time (T90<10S) and a sampling accuracy of ±3%F.S.


The detector is equipped with an adjustable pump suction sampling method, powered by a built-in micro sampling air pump that ensures stable flow and low noise. A flexible metal probe with double-layer wire spring protection allows for precise sampling in confined or hard-to-reach areas.

All critical data is displayed clearly on a 3.5-inch TFT color screen (480*320 resolution), which supports real-time concentration curves and Chinese/English language switching. The device is powered by a built-in 5400mAh lithium battery for extended standby times. It is capable of storing up to 100,000 data entries and 1,000 alarm records, which can be easily exported via a USB interface.


Designed for modern safety requirements, the device supports LORA wireless transmission mode, allowing data to be sent to a gateway and uploaded to a server for remote monitoring (4G/5G transmissions can also be customized). It is an essential tool for petroleum, petrochemicals, coal mines, fire alarms, and hazardous environment inspections.


Q1: How long is the sensor service life for this 6-in-1 gas detector?
A1:The effective service life of the sensors is 1 to 3 years in clean air, and calibration is recommended every six months or once a year depending on the working environment.
Q2: How are alarms configured on this device?
A2:The standard configuration includes a two-level alarm system, allowing users to set both high and low alarm thresholds.
Q3: Does the device support data export?
A3:Yes, the detector reserves a USB interface externally. You can use a USB cable to communicate with a computer for detailed data export and deletion.
Q4: Can the display language and measurement units be customized?
A4:Yes, the device features a function for switching between Chinese and English display languages. Users can also switch between different measurement units, such as ppm and mg/m3, by modifying the coefficients through the built-in buttons.
Q5: What are the recommended operating temperature and humidity limits?
A5:The detector is designed to operate in temperatures ranging from -20 to 50°C and a working humidity of 0-95%RH. If the device is used in environments with exceptionally high humidity, users must filter and dehumidify the air before conducting the test.
Q6: What happens if the battery depletes during prolonged testing?
A6:When the battery power drops to 0%, a countdown and automatic shutdown interface will appear on the screen. While you can force the detector to turn back on, it will automatically shut down again after 5 minutes to protect the system.

The HNAG800-HBR/HCL Preprocessing Online Monitoring System provides real-time Hydrogen Bromide and Hydrogen Chloride detection. Featuring a precise electrochemical sensor in a stainless steel enclosure, it ensures rapid response and industrial safety.

The HNAG800-HCN Preprocessing Online Monitoring System delivers real-time Hydrogen Cyanide detection. Featuring a highly sensitive electrochemical sensor, it ensures rapid response, high accuracy, and explosion-proof safety within a rugged stainless steel enclosure.

The HNAG800-NO Preprocessing Online Monitoring System delivers real-time Nitric Oxide detection. Featuring an advanced electrochemical sensor for atmospheric monitoring, it ensures rapid response and high precision in a rugged stainless steel enclosure.

The HNAG900-NH3 Preprocessing Online Monitoring System delivers real-time, accurate ammonia detection. Engineered with electrochemical and thermal conduction sensors in a robust stainless steel enclosure, it ensures rapid response and safety in harsh industrial environments.

The HNAG800-SO2 Preprocessing Online Monitoring System delivers real-time Sulfur Dioxide detection. Featuring an advanced electrochemical sensor for flue gas, it ensures rapid response and high precision in a rugged stainless steel enclosure.

The HNAG1000-NO2 Preprocessing Online Monitoring System provides real-time Nitrogen Dioxide detection. Engineered with an electrochemical sensor for flue gas applications and housed in robust stainless steel, it guarantees rapid response and industrial safety.

The HNAG1000-H2S Preprocessing Online Monitoring System delivers real-time hydrogen sulfide detection. Featuring an advanced electrochemical sensor and a rugged stainless steel enclosure, it ensures rapid response and safety in harsh environments.

The HNAG900 VOC gas detector offers precise real-time monitoring of volatile organic compounds. Powered by electrochemical/PID sensors and adjustable pump suction, it features a 3.5-inch TFT screen, USB export, and Ex ib II CT4 Gb rating.

The fixed C2H4O gas detector (HNAG1000) provides real-time, accurate ethylene oxide monitoring (0-100 ppm). Featuring a precise electrochemical sensor, robust aluminum alloy housing, and IP66 protection, it ensures ultimate industrial safety.

Portable HNAG920 H2SO4 Gas Detector offers dual pump-suction and diffusion sampling. With a precision electrochemical sensor, 2.0-inch LCD, and durable PC+TPU housing, it ensures rapid, accurate sulfuric acid monitoring for safety.

The HNAG920-3H portable 3-in-1 gas detector monitors CH4, C3H8, and H2. Featuring integrated pump-suction and diffusion modes, a 180° auto-rotating screen, and wireless transmission, it provides superior safety in complex environments.

The HNAG1000-O3 fixed gas detector provides real-time, highly accurate ozone (O3) monitoring. Featuring an advanced electrochemical sensor, Ex d IIC T6 rating, and 4-20mA/RS485 outputs, it ensures maximum safety in demanding industrial environments.

The HNAG920-PH3 portable gas detector offers precise real-time phosphine monitoring. Featuring a dual pump-suction and diffusion design, 2.0-inch auto-rotating screen, and wireless data export, it ensures maximum safety in hazardous environments.

The HNAG1000-H2S is an industrial fixed hydrogen sulfide (H2S) gas detector featuring a rugged stainless steel enclosure. Equipped with a precise electrochemical sensor, it delivers real-time monitoring, multi-signal output, and IP66 protection.

The HNAG920-5H portable 5-in-1 gas detector supports both pump suction and diffusion modes. It monitors O2, H2S, CO2, CO, and N2 simultaneously with high accuracy, featuring wireless transmission, a 180° auto-rotating screen, and a durable PC+TPU housing.

The HNAG800-O3 Preprocessing Online Monitoring System provides real-time Ozone detection. Featuring an advanced electrochemical sensor in a stainless steel enclosure, it ensures rapid response and high precision for strict industrial safety.

The HNAG800-CLO2 Preprocessing Online Monitoring System delivers real-time Chlorine Dioxide detection. Featuring a highly sensitive electrochemical sensor, it ensures rapid response and high accuracy within a rugged stainless steel enclosure for strict industrial safety.

The HNAG800-CL2 Preprocessing Online Monitoring System delivers real-time Chlorine gas detection. Featuring a highly sensitive electrochemical sensor, it ensures rapid response and high accuracy within a rugged stainless steel enclosure for strict industrial safety.

The HNAG800-HF Preprocessing Online Monitoring System delivers real-time Hydrogen Fluoride detection. Featuring a highly sensitive electrochemical sensor, it ensures rapid response and high accuracy within a rugged stainless steel enclosure for robust industrial safety.

The HNAG800-F2 Preprocessing Online Monitoring System provides real-time Fluorine detection. Featuring a precise electrochemical sensor within a robust stainless steel enclosure, it ensures rapid response and high safety in harsh environments.

The HNAG800-HBR/HCL Preprocessing Online Monitoring System provides real-time Hydrogen Bromide and Hydrogen Chloride detection. Featuring a precise electrochemical sensor in a stainless steel enclosure, it ensures rapid response and industrial safety.

The HNAG800-HCN Preprocessing Online Monitoring System delivers real-time Hydrogen Cyanide detection. Featuring a highly sensitive electrochemical sensor, it ensures rapid response, high accuracy, and explosion-proof safety within a rugged stainless steel enclosure.

The HNAG800-NO Preprocessing Online Monitoring System delivers real-time Nitric Oxide detection. Featuring an advanced electrochemical sensor for atmospheric monitoring, it ensures rapid response and high precision in a rugged stainless steel enclosure.

The HNAG900-NH3 Preprocessing Online Monitoring System delivers real-time, accurate ammonia detection. Engineered with electrochemical and thermal conduction sensors in a robust stainless steel enclosure, it ensures rapid response and safety in harsh industrial environments.

The HNAG800-SO2 Preprocessing Online Monitoring System delivers real-time Sulfur Dioxide detection. Featuring an advanced electrochemical sensor for flue gas, it ensures rapid response and high precision in a rugged stainless steel enclosure.

The HNAG1000-NO2 Preprocessing Online Monitoring System provides real-time Nitrogen Dioxide detection. Engineered with an electrochemical sensor for flue gas applications and housed in robust stainless steel, it guarantees rapid response and industrial safety.

The HNAG1000-H2S Preprocessing Online Monitoring System delivers real-time hydrogen sulfide detection. Featuring an advanced electrochemical sensor and a rugged stainless steel enclosure, it ensures rapid response and safety in harsh environments.

The HNAG900 VOC gas detector offers precise real-time monitoring of volatile organic compounds. Powered by electrochemical/PID sensors and adjustable pump suction, it features a 3.5-inch TFT screen, USB export, and Ex ib II CT4 Gb rating.

The fixed C2H4O gas detector (HNAG1000) provides real-time, accurate ethylene oxide monitoring (0-100 ppm). Featuring a precise electrochemical sensor, robust aluminum alloy housing, and IP66 protection, it ensures ultimate industrial safety.

Portable HNAG920 H2SO4 Gas Detector offers dual pump-suction and diffusion sampling. With a precision electrochemical sensor, 2.0-inch LCD, and durable PC+TPU housing, it ensures rapid, accurate sulfuric acid monitoring for safety.

The HNAG920-3H portable 3-in-1 gas detector monitors CH4, C3H8, and H2. Featuring integrated pump-suction and diffusion modes, a 180° auto-rotating screen, and wireless transmission, it provides superior safety in complex environments.

The HNAG1000-O3 fixed gas detector provides real-time, highly accurate ozone (O3) monitoring. Featuring an advanced electrochemical sensor, Ex d IIC T6 rating, and 4-20mA/RS485 outputs, it ensures maximum safety in demanding industrial environments.

The HNAG920-PH3 portable gas detector offers precise real-time phosphine monitoring. Featuring a dual pump-suction and diffusion design, 2.0-inch auto-rotating screen, and wireless data export, it ensures maximum safety in hazardous environments.

The HNAG1000-H2S is an industrial fixed hydrogen sulfide (H2S) gas detector featuring a rugged stainless steel enclosure. Equipped with a precise electrochemical sensor, it delivers real-time monitoring, multi-signal output, and IP66 protection.