| Gas Detected | CH4 CO2 N2 H2 |
| Detection principle | CH4/CO2: Infrared principle N2: Electrochemical principle H2: Heat Conduction principle |
| Resolution | 0.01% VOL |
| Measure Range | CH4: 0 LEL to 100% VOL,H2: 0 VOL to 100% VOL,CO2: 0 VOL to 100% VOL, N2: 0 VOL to 100% VOL |
| Sampling method | Built-in stable flow pump, each flow pump is equipped in each independent module, pump flow is adjustable in ten steps, flowrange: 0 to 800 mL/Min |
| Concentration unit | ppm, mg/m3, %VOL, %LEL, can be switched by one button, and the concentration value is automatically converted by the internalsystem |
| Display | 3.5-inch colour display, resolution 320 x 480 |
| Display content | Gas formula, concentration data, unit of measure, gas curve trend, battery level, time, temperature, humidity, pressure(optional), pump status, wireless status, printer status, screen capture status |
| Display mode | Multiple display modes selectable, multi-channel data mode, multi-curve mode, multi-channel data + multi-curve mode, singlechannel + single curve mode |
| Data storage | Standard 8G SD card storage function (more capacity can be customised), storage interval can be set by itself, can achieve localstorage, view, delete historical data and alarm records, can be directly connected to the computer through USB, quickly downloadstored data, TXT document; with PC software to download, store, analyse, print data |
| Communication and data download | Output RS232, RS485 signal; with PC software to download, store, analyse, print data (optional) |
| Wireless transmission | Bluetooth (with printer), ZigBee, built-in DTU wireless module (optional) |
| Print | Built-in printer or external Bluetooth printer (optional) |
| Print content | Text, graphics, 1D code, 2D code, curve |
| Battery capacity | 3.7 V DC, 10000 Mah rechargeable polymer battery with overcharge, over discharge, over voltage, short circuit protection |
| Charging interface | Micro-USB charging interface is designed to be charged anytime, anywhere with common data lines and mobile power |
| Filter device | Each module is equipped with a multi-layer filter to efficiently filter oil, water and dust. |
| Precision | 2% FS |
| Response Time | ≤ 10 S |
| Repeatability | ≤ ± 1% |
| Zero shift | ≤ ± 1% (F.S / Year) |
| Working humidity | 0% RH to 95% RH (no condensation) (high humidity can be selected with filter drying device) |
| Explosion-Proof | Exec II CT3 Gc |
| Alarm mode | Buzzer, red LED and alarm status prompt on the display, fault alarm, pump abnormal alarm, battery low battery alarm, shutdownalarm, fall alarm (optional) |
| Recovery Time | ≤ 10 S |
| Linearity error | ≤ ± 1% |
| Degree of protection | IP 66 |
| humidity detection range | 0% RH to 99% RH |
| Temperature | -4 °F to 122 °F (-20 °C to 50 °C) |
| Dimensions | 10.24 in x 9.06 in x 4.72 in (260 mm x 230 mm x 120 mm) |
| Weight | 8.16 lb (3.7 kg) |
