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| Handhold LEL 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: ¡À2ppm; ( 20~100 )ppm: ¡À4ppm
( 100~ 500)ppm: true value¡À5%; £¨500~1000ppm£ºtrue value¡À6%
CH4: ( 0.00~1.00 ) %CH4£º¡À0.10% CH4
( 1.00~3.00 ) %CH4£º(true value)¡À0.10%
( 3.00~4.00 ) %CH4£º¡À0.30%CH4
O2: ( 0.0~5.0 ) %vol: ¡À0.5%vol; ( > 5.0 ) %vol: full range ¡À3%
H2S: ( 0~49 ) ppm: measured value¡À3%
( > 50)ppm: measured value¡À10% |
Resolution ratio |
CO:? 1ppm;??? O2: 0.1%vol
Ch4: 0.01%CH4?? H2S: 1ppm |
Display |
Liquid crystal display£¨LCD£©display |
Response time |
CO: ¡Ü45s (T90); CH4: ¡Ü20S ( T90 ); O2: ¡Ü35s(T90); |
Alarm sound intensity |
¡Ý75dB |
Alarm light |
¡Ý20M visible |
Alarm point |
can be set ?in full proceed |
Alarm way |
Sound, light |
Continuous working time |
£¾3 months ( without backlight) |
Sensor lifetime |
¡Ý2 year |
Working current |
< 1mA ( without backlight) |
Battery model |
PL123450 |
Charging time |
4-5 hours |
Protection degree |
IP54 |
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