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AMT401 Multi Gas Detector is a portable, pump-driven gas detector built for reliable gas detection across the petrochemical & chemical industry, municipal engineering & utilities, agriculture & environmental protection, electronics, and food & pharmaceutical industries. As a multi gas detector and gas analyzer, it monitors up to 5 gases simultaneously, serving as a dependable gas detector alarm and gas monitor for confined-space entry, leak checks, and continuous industrial gas detection. Configurable gas channels also support natural gas detector applications on request.
| 3.5" HD Display | High-definition color screen with a 150° viewing angle, housed in a patented, rugged casing. A standard dustproof filter on the air inlet allows reliable gas detection in humid, dusty environments, and the redesigned air chamber speeds up response time. |
| Flashlight & Fall Alarm | Built-in flashlight for dark work areas. An optional fall alarm adds extra safety for underground or confined-space gas monitoring operations. |
| Multi-Gas Detection | Reads up to 5 gases at once, with a simple switch between real-time concentration display and real-time curve display. |
| Adjustable Pump & Filtration | Built-in sampling pump with 10 adjustable flow speeds for different detection environments, plus a 3-stage filtration system that removes oil, water, dust, and other impurities to keep results accurate. |
| Data Storage & Download | Standard onboard storage — view history data on the instrument or download it to a computer. Optional 8GB memory card and PC software for extended storage and analysis. |
| Smart Power Management | Timed auto-shutdown, automatic sensor overload protection, and Micro-USB charging compatible with standard cables and power banks. |
| Wireless & Printing (Optional) | Built-in wireless module for real-time remote gas monitoring on a computer or phone via mini-program. Optional external Bluetooth printer for on-site printing. |
| Sampling Probe (Optional) | 360° bendable, non-deformable, detachable probe (130mm or longer). Dual-layer construction with an inner PTFE lining that resists gas adsorption, plus a protective spring layer. |
| Detecting Gas | As required |
| Measuring Range | As required |
| Resolution | 0.001 |
| Sensor Principle | Electrochemical |
| Accuracy | ≤±2% F.S. (higher precision available on request) |
| Sampling | Built-in pump sampling, high-quality micro pump, low noise, low vibration, stable suction |
| Pump Speed | 10 adjustable flow speeds, flow range 0-500mL/min |
| Screen | 3.5-inch IPS color LCD, resolution 320x480 |
| Display Content | Gas name/chemical formula, concentration data, unit of measurement, gas curve trend, battery level, time, pump status, etc. |
| Alarm | Buzzer, indicator light, and on-screen alarm status prompt; low battery alarm |
| Data Record | Automatic recording with interval and alarm storage modes, customizable interval; 100,000 records standard; optional 8GB memory card |
| Communication & Download | USB connection for quick TXT data download; optional PC software converts TXT to Excel |
| Zero Calibration | One-button, full-channel auto-zero function to correct zero offset |
| Calibration | Multi-point calibration supported |
| Recovery | Restore factory calibration and factory parameter settings |
| Print Function (Optional) | External Bluetooth printer |
| Print Content (Optional) | Real-time and historical concentration data |
| Battery | 3800mAh rechargeable lithium battery |
| Wireless Network (Optional) | LoRa, Bluetooth |
| Network Frequency (Optional) | 398-525MHz (LoRa), 2.4GHz (Bluetooth) |
| Wireless Range (Optional) | LoRa up to 3500m (open space); Bluetooth up to 10m |
| Working Temperature | -20°C to +50°C (optional flue gas probe detects up to 1200°C) |
| Working Humidity | 0-95% RH, non-condensing (optional filter available if moisture is too high) |
| Working Pressure | 96-106KPa |
| Explosion-Proof | Ex ia IIC T4 Gc |
| Size | 170*75*41mm |
| Weight | 400g |
Optional Parts:
1. Portable Bluetooth Printer (including Charging Base, Rechargeable Lithium Battery)
2. High Temperature Flue Gas Probe
3. Data software
4. Elastic bending probe