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Home Development Boards & Modules Modules MQ7 Module
MQ6 Module ₹275.00 ₹175.00 inc. GST
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MQ8 Module ₹250.00 ₹175.00 inc. GST

MQ7 Module

₹250.00 ₹175.00 inc. GST

  • Operating voltage: DC 5 V.
  • Interface Type: Analog
  • The analogue output voltage, the higher the concentration the higher the voltage.
  • Detection Gas: carbon monoxide
  • Detection range: 10 to 10000ppm
  • Four screw holes for easy positioning.
  • Has a long life and reliable stability.
  • Fast response and recovery characteristics.
  • Adjustable sensitivity
  • Dimension: 32mm x 22m x 27mm
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Categories: Development Boards & Modules, Modules, Slider 5 Tags: Carbon Monoxide Sensor, CO sensor, CO Sensor Module, Gas sensor, MQ-7, MQ7 module
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Description

MQ-7 module consists of the MQ-7 CO sensor IC with Carbon Monoxide as a gas sensing element. MQ-7 sensor is ideal for detection or measuring of carbon monoxide concentration at a range from 10 to 10000ppm in air. It offers excellent sensitivity and fast response makes it ideal for portable gas detectors or in other industrial applications. The module comes with basic components integrated allowing the sensor to function properly. And interfaced easily to any controller as the user prefers. Hence no external components are required, we need to just plug in Vcc & ground pins and you are ready to go.

MQ7 is a Tin oxide semiconductor sensor designed explicitly for Carbon Monoxide (CO) concentration detection. It works by detecting the CO concentration of cycle high and low temperature and detecting CO at low temperatures (heated by 1.5V). Analogue resistive output is provided by the sensor with conductivity higher along with the gas concentration rising. The resistance varies inside the sensor on the detection of carbon monoxide. Under the high temperature (heated by 5.0V), the other gases adsorbed under the low temperature cleared. We just need to power the heater coil with 5V, add a load resistance. As a result, the sensor and load resistor in the module form a potential divider and connect the output to an ADC or a simple OPAMP comparator.

Thus the CO content was detected by measuring this resistance. Therefore the lower the sensor resistance, the upper the voltage reading is going to be. MQ7 sensor designed to operate at temperatures ranging from -10 to 50°C. And consumes less than 150 mA current at 5 V.

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