| Detection Principle | Electrochemistry |
| Measure Range | 0 Ppm to 50 ppm,0 ppm to 100 ppm,0 ppm to 200 ppm,0 ppm to 500 ppm,0 ppm to 1000 ppm,0 ppm to 2000 ppm,0 ppm to 5000 ppm (range is optional and customized) |
| Resolution | 0.01 Ppm,0.1 ppm,1 ppm |
| Precision | 3% FS |
| Sampling Method | Diffusion (add external sampling pump if necessary) |
| Unit | Ppm, mg per m3 |
| Display | Monochrome dot matrix 128 x 128 LCD graphic display. |
| Backlight | The time of the backlight is settable, and when alarm the backlight will be auto-on. |
| Direct Reading | Gas molecular formula, concentration unit, measured value, time, battery, alarm state, data record status. |
| Data Recording | Storage capacity of over one hundred thousand sets, it can continue to store for 15 months with interval of 5 minutes. Interval time ranges from 10 seconds to 3600 seconds are settable. (Optional function) |
| Data Transmission | High speed data transmission by USB, and is available for data downloading and printing after installing necessary software (optional function). |
| Calibration | Two target point calibration, both can be set up a calibration value. Support automatic zero point calibration of all channels by one click. |
| Password Protection | Calibration is protected by password, and the password is resettable. |
| Restoration: | Support restoration of factory calibration, support restoration of factory parameter settings. |
| Alarm Type | Sound and light. Higher and lower alarm point values are settable. There are three alarm statuses for selection: ON OFF or MUTE. |
| Battery | 3.7 V Rechargeable lithium battery, with capacity of 1800 mAh, and the working time is more than 50 hours (no combustible gas), and the charging time is less than 6 hours. |
| Explosion-Proof Grade | ExiaⅡCT4 |
| Protection Grade: | IP66 |
| Working Humidity | 0% RH to 95% RH (Non-condensing, a filter dryer is needed in environment of humidity more than 90% RH) |
| Housing Material | ABS + PC |
| Working Temperature | -4 °F to 122 °F (-20 ℃ to 50 ℃) |
| Size | 6.10 In x 3.07 in x 1.37 in (155 mm x 78 mm x 35 mm) |
| Weight | 0.66 lb (0.3 kg) |
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