Four in one gas detection
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Digital module design
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The four in one composite gas detector adopts high-speed CPU processing, automatic fault recognition, automatic alarm, and high concentration over limit automatic protection.
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High measurement accuracy
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Beijing Four in One Composite Gas Detector/BeijingFour in one gas detectionThe instrument sensor adopts imported gas sensitive components, which have the characteristics of high accuracy, high reliability, good gas selectivity, and strong anti-interference ability.
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low-power
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The Beijing four in one composite gas detector/Beijing instrument works for more than 8 hours under normal monitoring conditions.
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lcd display
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Using LCD display and fully Chinese menu operation.
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Long battery life
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Adopting high-performance rechargeable lithium batteries with charging protection and low-voltage protection functions. Ensure reliable battery usage and long lifespan.
Four in one gas detection
Technical Parameter
Display mode | LCD | Power supply mode | High performance rechargeable lithium battery |
call the police | Sound and light alarm | Charging Voltage | DC8.5V±0.2% |
Sound intensity | >75dB | standby time | >8h |
detection | Free diffusion type (external pump, optional) | ||
Detect gas | Combustible and toxic gases | measuring range | See attached table |
Detection Principle | Catalytic combustion/electrochemical | repeatability | 2% |
response time | T90<60s | error | ±5%FS |
temperature range | -20℃~50℃ | Explosion proof grade | Intrinsically safe type |
Humidity range | 10% RH~95% RH (no frost) | Explosion proof sign | Exd ib IIB T4 Gb |
Pressure Range | 86kpa~106kpa | ||
weight | 1.3kg | External dimensions | 130mm×81mm×51mm
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Gas Description
Gas name | range | accuracy | alarm point | Calibration Value | operation temperature | Working humidity | Working pressure | response time | Lifespan/month | Interfering gas |
CH4 | 0-100%LEL | 1%LEL | 25%LEL | 25%LEL | -20℃~50℃ | 15~90%RH | 86~106kpa | ≤30 | 36 |
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CO | 0-1000ppm | 1ppm | 80ppm | 200ppm | -20℃~50℃ | 15~90%RH | 86~106kpa | ≤60 | 12 | NO2、HCN、 ethylene |
H2S | 0-50ppm | 0.1ppm | 8ppm | 10ppm | -40℃~50℃ | 15~90%RH | 86~106kpa | ≤60 | 12 | SO2、CL2 |
O2 | 0-30%VOL | 0.1%VOL | 18%VOL | 20.9%VOL (Clean air) | -20℃~50℃ | 15~90%RH | 86~106kpa | ≤60 | 24 | not have |
CL2 | 0-20ppm | 0.1ppm | 8ppm | 10ppm | -20℃~50℃ | 15~90%RH | 86~106kpa | ≤60 | 12 | NO2 |
SO2 | 0-20ppm | 0.1ppm | 8ppm | 10ppm | -20℃~50℃ | 15~90%RH | 86~106kpa | ≤60 | 12 | H2S、HCN、HCL |
NH3 | 0-1000ppm | 1ppm | 80ppm | 100ppm | -10℃~40℃ | 15~90%RH | 86~106kpa | ≤60 | 12 | H2S、SO2、CL2、NO |
NO2 | 0-20ppm | 0.1ppm | 8ppm | 10ppm | -20℃~50℃ | 15~90%RH | 86~106kpa | ≤60 | 12 | CL2 |