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Infinite L-com SRAQ-G020 User Manual

Volatile organic compounds sensor module

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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.
Features
Features MQ138 sensing element
Highly sensitivity to VOC's
Indication light
Detection range 5  500 ppm
Analog and TTL level outputs
Fast response
4 pin male header
Applications
VOC gas alarms
Industrial gas leakage detectors
Portable VOC
Other areas where VOC concentrations are of concern
Thank you for choosing L-com product. To ensure safe, accurate performance and product longevity, please take a moment to familiarize yourself
with this manual before powering the device. Please keep it handy for future reference. In case of any questions regarding the installation or use of
product, please call us at 800.341.5266.
Reach out to us at customerservice@l-com.com and visit our website at www.l-com.com
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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.