| Gas Detected | Nitrogen N2 |
| Detection principle | Electrochemical principles |
| Measurement Range | 0 to 100 %.Vol |
| Resolution | 0.01 %VOL |
| Concentration unit | ppm, mg/m<sup>3</sup>, %VOL, %LEL, can be switched by one button, and the concentration value is automatically converted by the internal system |
| Precision | 2 % FS |
| Response Time | ≤ 8S |
| Repeatability | ≤ ± 1 % |
| Zero shift | ≤ ± 1% (F.S / Year) |
| Sampling method | Built-in stable flow pump, each flow pump is equipped in each independent module, pump flow is adjustable in ten steps, flow range: 0 to 500 mL/Min |
| Modular structure | Can detect up to 1 to 4 kinds of gases |
| Display | 3.5-inch color display, resolution 320 × 480 |
| Display content | Gas formula, concentration data, unit of measure, gas curve trend, battery level, time, temperature (optional), humidity(optional), pressure (optional), pump status, wireless status(optional), printer status(optional), screen capture status |
| Display mode | Multiple display modes selectable, multi-channel data mode, multi-curve mode, multi-channel data + multi-curve mode, single channel + single curve mode |
| Temperature and humidity detection range | Temperature: -20 °C to 50 °C, resolution: 0.1 °C humidity: 0 to 99% RH, resolution: 1% RH (optional) |
| Data storage | Standard 16M capacity storage function, can save upto 100000 groups of data. With optional 8G SD card storage function (more capacity can be customized), storage interval can be set by itself, can achieve local storage, view, delete historical data and alarm records, Can be directly connected to the computer through USB, quickly download stored data , TXT document |
| Communication and data download | Output USB port Optional PC software to download in excel format, store, analyze, optional print data with blue-tooth printer |
| Wireless transmission | (optional) Bluetooth (with printer), ZigBee, built-in DTU wireless module (optional) |
| Printing | Built-in printer or external Bluetooth printer (optional with extra charge) |
| Print content | Text, graphics, 1D code, 2D code, curve |
| Screen capture settings | The content displayed by the current host can be saved in the form of a BMP picture, and then the picture is exported to the computer through the USB cable for the user to record and reference |
| Operating language | English |
| Battery capacity | 3800 mA rechargeable polymer battery with overcharge, over discharge, over voltage, short circuit protection |
| Charging interface | USB charging interface, 5V/2A standard charger |
| Filter device | Equipped with a multi-layer filter to efficiently filter oil, water and dust |
| Wireless network | Bluetooth (with print function), ZigBee, Lora+ (relay DTU), DTU (optional with extra charge) |
| Network frequency | Lora (470M), DTU (2.4G) |
| Wireless trans. distance | Lora (1.6 km), DTU (unlimited) |
| Operating temperature | -20 to 50°C (optional flue gas sampling probe, up to 600°C , 1200°C smoke concentration) |
| Working humidity | 0 to 95% RH (no condensation) (high humidity can be selected with filter drying device) |
| Explosion-Proof | Exic II CT3 Gc |
| Alarm mode | Buzzer, LED and alarm status prompt on the display, fault alarm, pump abnormal alarm, battery low battery alarm, shutdown alarm, fall alarm (optional with extra charge) |
| Dimension | 270 × 75 × 41 mm |
| Recovery Time | ≤ 10S |
| Linearity error | ≤ ± 1% |
| Degree of protection | IP66 |
| Weight | 400 g |
