| Handhold 4 in 1 (CH4, CO, O2, H2S) gas detector |
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No: DSW4
Details: detect and display of methane (LEL), carbon monoxide (CO), and concentration of oxygen (O2), hydrogen sulfide (H2S) at the same time .
Application of places: the petrochemical, coal, metallurgical, chemical, municipal gas, and other places at the scene detection.
Technical indicator |
Parameter |
Measuring range |
CO: ( 0~1000) ppm; ( 0.00~4.00 ) %CH4;
O2: （0~30.0）%vol、（0~100）%vol;
H2s: （0~50）ppm；（0~100）ppm；（0~1000）ppm |
Measurement error |
CO: ( 0~20 )ppm: ±2ppm; ( 20~100 )ppm: ±4ppm
( 100~ 500)ppm: true value±5%; （500~1000ppm：true value±6%
CH4: ( 0.00~1.00 ) %CH4：±0.10% CH4
( 1.00~3.00 ) %CH4：(true value)±0.10%
( 3.00~4.00 ) %CH4：±0.30%CH4
O2: ( 0.0~5.0 ) %vol: ±0.5%vol; ( > 5.0 ) %vol: full range ±3%
H2S: ( 0~49 ) ppm: measured value±3%
( > 50)ppm: measured value±10% |
Resolution ratio |
CO:? 1ppm;??? O2: 0.1%vol
Ch4: 0.01%CH4?? H2S: 1ppm |
Display |
Liquid crystal display（LCD）display |
Response time |
CO: ≤45s (T90); CH4: ≤20S ( T90 ); O2: ≤35s(T90); |
Alarm sound intensity |
≥75dB |
Alarm light |
≥20M visible |
Alarm point |
can be set ?in full proceed |
Alarm way |
Sound, light |
Continuous working time |
＞3 months ( without backlight) |
Sensor lifetime |
≥2 year |
Working current |
< 1mA ( without backlight) |
Battery model |
PL123450 |
Charging time |
4-5 hours |
Protection degree |
IP54 |
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