| Measuring Range | O2 | 0~30.0 %vol |
| H2S | 0~100 ppm |
| CO | 0~1000 ppm |
| CH4 | 0.00~5.00 %vol |
| LEL | 0~100 %LEL |
| Measurement Error | O2 | 0.0~5.0 %vol (±0.5%vol) >5.0~30.0 %vol (±0.9%vol) |
| H2S | 0~50 ppm (±3ppm) >50~100 ppm (true value ±10%) |
| CO | 0~20 ppm (±2ppm) >20~100 ppm (±4ppm) >100~500ppm (true value ±5%) >500~1000 ppm (true value ±6%) |
| CH4 | 0.00~1.00 %vol (±0.10%vol) 1.00~3.00 %vol (true value ±10%) 3.00~5.00 %vol (±0.30%vol) |
| LEL | 1~20 %LEL (±2%LEL) 20~60 %LEL (true value ±2%) 60~100 %LEL (±6%LEL) |
| Resolution Ratio | O2 | 0.1%vol |
| H2S | 1ppm |
| CO | 1ppm |
| CH4 | 0.01%vol |
| LEL | 1%LEL |
| Response Time | O2 | ≤35s (T90) |
| H2S | ≤45s (T90) |
| CO | ≤45s (T90) |
| CH4 | ≤20s (T90) |
| LEL | ≤20s (T90) |
| Sensor | - High quality catalytic sensor for CH4, LEL - Electrochemical sensor for O2, H2S, CO |
| Sensor Lifetime | ≥ 2 year: O2, H2S, CO ≥ 1 year: CH4, LEL |
| Alarms | - Audible: buzzer with ≥85dB at 1m audible - Visible: flashing red LED ≥20m visible - Vibration |
| Alarm Point | High and low, fully adjustable |
| Data Logging | Continuous data logging
(100000 records with 1-10 minutes interval) |
| Protection Level | IP66/67 | Measuring Range | 0.0~30.0 %vol | | Measurement Error | 0.0~5.0 %vol: ±5%vol
>5.0~30.0 %vol: ±0.9%vol | | Resolution Ratio | 0.1%vol | | Sensor | Electrochemical sensor | | Sensor Lifetime | ≥2 year | | Response Time | ≤35s (T90) | | Alarms | Audible: buzzer with ≥75dB audible
Visible: flashing red LED, ≥20m visible | | Continuous Working Time | >300 hours | | Working Current | 5mA | | Display | Liquid crystal display (LCD) | | Working Temperature | -25°C ~55°C; short time for -40°C~55°C | | Protection Degree | IP65 | | Battery | 3.7V/1500mA | | Charging Time | 4-5 hours | | Dimensions | 105 × 54 × 32 mm | | Weight | 140g | |
| Display | Liquid crystal display (LCD) |
| Working Temperature | -25°C to 55°C |
| Continuous Working | ≥13 hours |
| Battery | 3.7V/1500mA |
| Charging Time | 4-5 hours |
| Dimensions | 130 × 70 × 37 mm |
| Weight | 240g |