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MQ-7 Gaz Sensörü
Karbon monoksit gaz ölçüm sensör modülüdür. Analog ve dijital çıkış verebilen yapıda tasarlanmıştır.
MQ-7 gas sensor is sensitive material used in clean air, low conductivity tin dioxide (SnO2). Detection method using low temperature cycling ( heating) detect carbon monoxide, airborne sensor conductivity increases with the increase of the concentration of carbon monoxide gas, high temperature ( heating) cleaning stray gas adsorption at low temperature. Using a simple circuit can be changes in the conductivity, concentration of the gas is converted to the corresponding output signal. MQ-7 gas sensor with high sensitivity for carbon monoxide, this sensor can detect a variety of gases containing carbon monoxide, is a low-cost sensors for a variety of applications,
Module Applications:
For home, carbon monoxide detection device environment. Suitable for carbon monoxide and gas detection.
Module Features:
- Using high-quality dual-panel design, with power indicator and TTL signal output instructions;
- With a DO switch signal (TTL) output and AO analog signal output;
- TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module)
- The analog output voltage, the higher the concentration the higher the voltage.
- The carbon monoxide detection with better sensitivity.
- There are four screw holes for easy positioning;
- With a long service life and reliable stability
- High sensitivity and good selectivity for CO
- Rapid response and recovery characteristics
- Detecting Range: 10 to 1000ppm
- Sensitivity: R in air/R in typical gas5
- Response Time150s(70% Response)
- Recovery Time150s(70% Response)
- Heating Resistance 313
- Heating
- Heating Power about 350mW
- Measuring Voltage24V
- Long service life and reliable stability.
- Operating Condition:
- Ambient Temperature-20+55
- Humidity: 95%RH
- Environment oxygen content: 21%
- Storage Condition:
- Temperature: -20 to +70
- Product Dimensions: 32 (L) * 20 (W) * 22 (H)
Electrical Properties:
- Input voltage: DC5V power (current): 150mA
- Digital Output: TTL digital 0 and 1 ( and 5V)
- Analog Output .3 V (relatively clean), the highest concentration of voltage around 4V
- Special note: The sensor is powered, needs to warm up around 20S, measured data becomes stable, the sensor fever is a normal phenomenon, because the internal heating wire, if hot is not normal.
MQ-7 ( )
Sensitive for Carbon Monoxide
The heater uses an alternating voltage of 5V and
A library for the MQ-7 :
The MQ307A (also on this page) is like this sensor, but uses a lower heater voltage.
Search for datasheet:
Paket İçeriği:
- 1 Adet MQ-7 Sensor Modül
