OEM CO detector element
High sensitity to Carbon Monoxide
Best choice for your prototype.
Stable performance with low price
OEM CO detector element
Character
1. Good sensitivity to Combustible gas in wide range,
2. High sensitivity to Natural gas,
3. Long life and low cost,
4. Simple drive circuit.
Application
1. Domestic gas leakage detector,
2. Industrial CO detector,
3. Portable gas detector.
Technical Data
Model No. | MQ-7 | ||
Sensor Type | Semiconductor | ||
Standard Encapsulation | Plastic | ||
Detection Gas | Carbon Monoxide | ||
Concentration | 10-10000ppm CO | ||
Circuit | Loop Voltage | Vc | ≤10V DC |
Heater Voltage | VH | 5.0V±0.2V AC or DC(High) 1.5V±0.1V AC or DC(Low) | |
Heater Time | TL | 60±1S(High) 90±1S(Low) | |
Load Resistance | RL | Adjustable | |
Character | Heater Resistance | RH | 31Ω±3Ω (Room Tem.) |
Heater consumption | PH | ≤350mW | |
Sensing Resistance | Rs | 2KΩ-20KΩ(in 100ppm CO ) | |
Sensitivity | S | Rs(in air)/Rs(100ppm CO)≥5 | |
Slope | α | ≤0.6(R300ppm/R100ppm CO) | |
Condition | Tem. Humidity | 20°C±2°C, 65%±5%RH | |
Standard test circuit | Vc:5.0V±0.1V, VH(High): 5.0V±0.1V, VH(Low): 1.5V±0.1V | ||
Preheat time | Over 48 hours | ||
