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气体检测仪 气体报警器 气体探头 气体传感器 气体传感器模组 无人机大气监测系统 气体报警控制主机 Keywords: gas detector gas alarm gas probe gas sensor gas sensor module drone atmospheric monitoring system gas alarm control host

Gas Sensor Methane Butane Detection Analog Sensor

This site2018-12-24 14:37:22

Gas Sensor Methane Butane Detection Analog Sensor

Nowadays, society's understanding of environmental protection has become popular, and environmental protection is becoming more and more important for most people who pursue the quality of life. Therefore, the development of green products has become the goal pursued by major companies. In 2010, the latest gas sensor was designed to meet market demand. The smoke sensor uses MQ-2 gas sensor, which can sensitively detect smoke and methane gas in the air. The 3P sensor connection cable can be directly plugged into the Arduino sensor expansion board, which can be programmed by the Arduino mega 168 controller, and combines the buzzer module with the relay module. It can make smoke alarm, methane leak alarm, automatic smoke exhauster and other products. It is an ideal sensor to make indoor air meet environmental standards. Specifications: 1, heating voltage: 5 ± (AC and DC) _2, loop voltage: 10V (maximum DC 24V) _3, load resistance: 5K (adjustable) _4, clean air voltage: ≤1.5V, sensitivity: ≥36, Response time: ≤10S7, recovery time: ≤30S8, component power consumption: ≤0.7W9, service life: 5 years: 10, size: × 41 mm 11, weight: 7g Note: This sensor is equipped with a sensitivity regulator potentiometer: Large clockwise adjustment, small counterclockwise adjustment. By adjusting the sensitivity of the smoke sensor, the starting point of the fan with a satisfactory smoke concentration can be obtained. MQ-2 gas sensor parameters: A. Standard working conditions Symbol Parameter name Technical conditions VC circuit voltage ≤ 15V AC or DC VH heating voltage ± 0.2V AC or DC RL load resistance adjustable RH heating resistance 31Ω ± 3Ω Room temperature PH heating power ≤ 900 mW Environmental Conditions Symbol Parameter Name Technical Condition Description Operating Temperature -10 ℃ -50 ℃ Tas Storage Temperature -20 ℃ -70 ℃ Relative Humidity Less than 95% RH Oxygen Concentration 21% (standard conditions) The minimum value that will affect sensitivity is greater than 2% C, Rs Surface resistance 3KΩ-30 KΩ (1000 ppm isobutane) The detection concentration range is 100 ppm-10000 ppm. Liquefied gas and propane 300 ppm-5000 ppm butane 5000 ppm methane 300 ppm-5000 ppm hydrogen 100 ppm-2000 ppm alcohol alpha (3000/1000) isobutane concentration slope ≤ standard operating conditions temperature: 20 ° C ± 2 ° C VC: ± Relative humidity: 65% ± 5% VH: ± Preheat time is less than 1 hour

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