Productos
MQ-7B Carbon Monoxide Gas Sensor
Sensor de Monóxido de Carbono (CO).
COD: WINMQ7B
Peso: 0.005 Kg
Disponibilidad: En Stock
ARS 7941.00
El producto no está disponible para la venta en este momento
Características
Sensitive material of MQ-7 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensor’s conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it cleans the other gases adsorbed under low temperature. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.
MQ-7 gas sensor has high sensitity to Carbon Monoxide. The sensor could be used to detect different gases contains CO, it is with low cost and suitable for different application.
Character:
- Good sensitivity to Combustible gas in wide range
- High sensitivity to Natural gas
- Long life and low cost
- Simple drive circuit
Application:
- Domestic gas leakage detector
- Industrial CO detector
- Portable gas detector
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Model No.
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MQ-7
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Sensor Type
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Semiconductor
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Standard Encapsulation
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Plastic
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Detection Gas
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Carbon Monoxide
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Concentration
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10-10000ppm CO
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Circuit
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Loop Voltage
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Vc
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≤10V DC
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Heater Voltage
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VH
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5.0V±0.2V AcorDC(High)
1.5V±0.1V ACorDC(Low)
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Heater Time
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TL
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60±1S(High)90±1S(Low)
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Load Resistance
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RL
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Adjustable
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Character
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Heater Resistance
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RH
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31Ω±3Ω(Room Tem.)
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Heater consumption
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PH
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≤350mW
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Sensing Resistance
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Rs
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2KΩ-20KΩ(in 100ppm CO)
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Sensitivity
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S
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Rs(in air)/Rs(100ppm CO)≥5
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Slope
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α
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≤0.6(R300ppm/R100ppm CO)
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Condition
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Tem. Humidity
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20�??±2�??�?65%±5%RH
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Standard test circuit
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Vc:5.0V±0.1V�?
VH(High): 5.0V±0.1V�?
VH(Low): 1.5V±0.1V
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Preheat time
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Over 48 hours
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mq-7_xg.pdf (52 Kb)
