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Product Details:
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| Model: | MQ-7B | Sensor Type: | Semiconductor |
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| Standard Encapsulation: | Plastic Cap | Target Gas: | Carbon Monoxide |
| Detection Range: | 10～500ppm CO | Loop Voltage: | 5.0V±0.1V DC |
| Highlight: | MQ-7B Carbon Monoxide Gas Sensor,Professional Carbon Monoxide Gas Sensor,Industrial Applications Carbon Monoxide Gas Sensor |
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MQ-7B Carbon Monoxide Gas Sensor
| Model | MQ-7B | ||
| Sensor Type | Semiconductor | ||
| Standard Encapsulation | Plastic cap | ||
| Target Gas | carbon monoxide | ||
| Detection range | 10～500ppm CO | ||
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Standard Circuit Conditions |
Loop Voltage | Vc | 5.0V±0.1V DC |
| Heater Voltage | VH |
5.0V±0.1V AC or DC(High temp.) 1.5V±0.1V AC or DC(Low temp.) |
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| Heater Time | TL |
60 S±1S(High temp.) 90 S±1S(Low temp.) |
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| Load Resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 30Ω±3Ω (room temp.) |
| Heater consumption | PH | ≤950mW | |
| Sensitivity | S | Rs(in air)/Rs(in 150ppm CO)≥5 | |
| Output Voltage | Vs | 2.5V～4.3V (in 150ppm CO) | |
| Concentration Slope | α | ≤0.6(R300ppm/R50ppmCO) | |
| Standard test conditions | Tem. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit |
Vc:5.0V±0.1V； VH (High temp.): 5.0V±0.1V VH (Low temp.): 1.5V±0.1V |
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| Preheat time | Not less than 48 hours | ||
| O2 content |
21%(not less than 18%) O2 concentration effects initial value, sensitivity and repeatability. |
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| Preheat time | Over 48 hours | ||
| Lifespan | 10years | ||
Contact Person: Miss. Xu
Tel: 86+13352990255
