PGas-21 Series Single Gas Detector has high sensitivity and high accrancy, it is suitable for the detection of many kinds of toxic and harmful gases. The instrument adopts advanced 16-bit microcontroller with extra low power consumption and quick processing speed. It is firm and durable with the anti-skid design of shell. It is widely used in petroleum, petrochemistry, chemical industry, gas, coal, metallurgy and power system; safety detection in municipal administration, communication and traffic tunnel construction; electronics and semiconductor industry and other places where toxic and harmful gases exist.
Technical parameters
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Parameter
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Characteristics
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Measuring gas
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Combustible gas, toxic and harmful gas, refer to lectotype table for details
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Sampling Method
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Diffusion, Pump sampling
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Measurement principle of sensor
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Electrochemical (oxygen and poisonous gas), catalytic combustion (combustible gas)
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Range
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Refer to lectotype table for details
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Alarm indication
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90dB variable sound vibration alarm, overrange, alarm against insufficient quantity of electricity
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Response time
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(CO, H2S, SO2, CL2, NO, CLO2, NO2<60s), (HCN, NH3, O3, HCl, C2H4O <160s), (PH3<100s), (combustible gas <30s)
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Detection error
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±5%F.S
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Operation mode
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Touch push-key
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Display mode
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Five-bit eight-segment LCD digital display
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Temperature of Operation envioroment
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-20℃~55℃
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Humidity of Operation envioroment
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0~95%RH (no dew condensation)
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Storage temperature
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0℃~40℃
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Power supply
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Rechargeable lithium battery, continuously work for over 24 hours
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Battery
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4.2V lithium battery, 1700mA/h capacity
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Dimension
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100×60×30 mm
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Weight
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105g
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Explosion-proof grade
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ExiaⅡCT3
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Protection grade
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IP65
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Calibration mode
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Optional calibrating cap to facilitate calibration by users
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Lectotype table for detectable gas
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Model
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Range
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Low alarm setting range
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High alarm setting range
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Low alarm point
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High alarm point
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PGas-21-FL
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0-100%LEL
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10%LEL-5%LEL
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25%LEL-80%LEL
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20%LEL
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50%LEL
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PGas-21-CO
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0-500ppm
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25ppm-100ppm
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100ppm-500ppm
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35ppm
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200ppm
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PGas-21-CO
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0-1000ppm
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25ppm-100ppm
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100ppm-500ppm
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35ppm
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200ppm
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PGas-21-H2S
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0-100ppm
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5ppm-15ppm
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15ppm-30ppm
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10ppm
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15ppm
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PGas-21-SO2
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0-100ppm
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1ppm-3ppm
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3ppm-10ppm
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2ppm
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5ppm
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PGas-21-CL2
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0-20ppm
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3ppm-10ppm
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5ppm-15ppm
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5ppm
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10ppm
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PGas-21-NH3
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0-100ppm
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20ppm-30ppm
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30ppm-70ppm
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25ppm
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50ppm
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PGas-21-NO
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0-250ppm
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20ppm-50ppm
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50ppm-100ppm
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25ppm
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50ppm
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PGas-21-NO2
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0-100ppm
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1ppm-2ppm
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2ppm-5ppm
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1ppm
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2ppm
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PGas-21-HCN
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0-30ppm
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5ppm-10ppm
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10ppm-15ppm
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5ppm
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10ppm
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PGas-21-PH3
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0-1ppm
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0.3ppm-0.5ppm
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0.5ppm-0.8ppm
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0.3ppm
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0.6ppm
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Executed standard
Note: GB standard is Chinese National Standard.
GB12358-2006 Gas monitors and alarms for workplace--General technical requirements
GB3836.1-2000 Electrical apparatus for explosive gas atmospheres--Part 1 General requirements
GB3836.4-2000 Electrical apparatus for explosive gas atmospheres--Part 4 intrinsic safety "i"
Explosion-proof mark: ExiaIICT3, it applies to 0 zone, 1 zone and 2 zone, the place that contains IIA～IIC category and T1～T3 group of explosive gas mixture, and is qualified to get explosion-proof conformity certificate through inspection by CQST.