Gas Detection Instruments — Multi Gas Series

AMT401 Multi Gas Detector

Keywords: multi gas detector, portable gas detector, 4 gas monitor, handheld gas detector, gas detector with pump

Detect Up to 5 Gases Simultaneously — Anywhere, Dependably.

The AMT401 is a handheld multi gas detector that can be flexibly configured with single or multiple gas sensors, detecting up to 5 gases at the same time. Its 3.5-inch HD IPS LCD screen with a 150° wide viewing angle shows gas concentration, real-time curves and status at a glance, with Chinese and English interfaces and sound, light and vibration alarms.

Built for tough environments, the AMT401 features a built-in gas sampling pump with ten adjustable flow speeds (0–500 mL/min), a dustproof/water filter for humid and dusty conditions, and strong resistance to high-speed airflow up to 6 m/s and electrical transients. An optional fall alarm protects underground workers, while IoT expansion allows real-time viewing of data on a computer or mobile phone.

Key Features

1.  Multi-Gas Detection — Monitor up to 1–5 gases simultaneously with configurable single or multi-sensor layouts.

2.  3.5-Inch HD IPS Screen — 320×480 color display with a 150° wide viewing angle and switchable curve/data modes.

3.  Ten-Speed Adjustable Pump — Built-in sampling pump (0–500 mL/min) with a three-layer filter to remove oil, water and dust.

4.  Triple Alarm & Fall Alarm — Sound, light and vibration warnings, plus an optional fall alarm for underground worker safety.

5.  IoT Expansion — Optional LORA/BLUETOOTH wireless module for real-time monitoring on a computer or mobile phone.

6.  Large-Capacity Battery — 3800mAh rechargeable lithium battery for long working time, chargeable via Micro-USB.

7.  Data Storage & Download — Standard storage of 100,000 history/alarm records; USB download to TXT, optional 8G memory card and PC software.

8.  Explosion-Proof Housing — Ex ia IIC T4 Gc rated, high-strength engineering materials for demanding industrial use.

How to Use

1.  Charge & Power On — Charge via Micro-USB and power on with the power button.

2.  Set Flow Rate — Adjust the pump flow in ten speeds to suit the testing environment.

3.  Zero Calibration — Use the one-button full-channel auto-zero function to correct any offset.

4.  Sample — Place the probe in the target area; the instrument pumps and measures the gas concentration.

5.  View & Record — Read real-time data or curves, and record/export history via USB, Bluetooth printer or wireless.

Technical Specifications

Applications

1.  Petrochemical & chemical industry

2.  Municipal engineering & utilities (tunnels, mines, sewers)

3.  Agricultural & environmental protection

4.  Oil refineries & metallurgical plants

5.  Pharmaceutical factories & food industry

6.  Farms, livestock breeding & greenhouses

7.  Electronics, storage/logistics, brewing & fermentation