Ac current sensor & over-current protector (7 pages)
Summary of Contents for Infinite L-com SRAQ-G004
Page 1
SMOKE AND FLAMMABLE GAS SENSOR MODULE User Guide for SRAQ-G004 Product Description The SRAQ-G004 gas sensor module detects the presence and concentration of smoke and other flammable gases such as butane, propane, methane and hydrogen. Integrated circuitry produces a non-linear voltage signal corresponding to the smoke and gas concentrations. With high sensitivity, the SRAQ-G004 sensor module can detect smoke in the range of 100-1000 ppm and flammable gases in the range of 300 to 10,000 ppm.
Page 2
Technical Parameters Supply Voltage 5 VDC ± 0.2 V Working Current <150 mA Detects Gases Flammable gases, smoke 300 10000 ppm (Combustible gas) Detection Concentration 100 10000 ppm (Smoke) Aout (Analog Signal) Vair ~4.8 V (Non linear) Output Method Dout (Level Signal) Low level Preheat Time...
Page 3
Notes Confirm the polarity and the voltage of the power supply before powering ON the sensor. The analog output of this module is non-linear. When connect to microcontroller, it should be connected to ADC interface of the microcontroller. The relationship between the resistance ratio and the concentration is a logarithmic relationship. For more info on typical sensitivity curve, check MQ2 Probe on internet.
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