Ac current sensor & over-current protector (6 pages)
Summary of Contents for Infinite L-com SRAQ-G020
Page 1
VOLATILE ORGANIC COMPOUNDS SENSOR MODULE User Guide for SRAQ-G020 Product Description The SRAQ-G020 gas sensor module detects the presence and concentration of various organic vapors including Toluene, acetone, ethanol, formaldehyde, and Hydrogen. Integrated circuitry produces a non-linear voltage signal corresponding to the gas concentration. With a detection range of 5 to 500ppm, this industrial sensor well suited for use in hand-held VOC detectors, factories and other areas where volatile organic vapors are a concern.
Page 2
Technical Parameters Working Voltage 5 VDC ± 0.2 V Working Current <150 mA Gas Detection Toluene, acetone, ethanol, formaldehyde, hydrogen Detection Concentration 5 500 PPM Preheating Time > 30 mins Response Time ≤3 sec Recovery Time ≤30 sec Aout (Analog signal) 0 ...
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 MQ138 Probe on internet.
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