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

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