BM22S3331-1

Electrochemical Alcohol Detection Module

General Information

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The BM22S3331-1 is a breath alcohol concentration detection module. The module adopts electrochemical alcohol sensor to quantitatively detect the alcohol concentration in exhaled breath. With the temperature compensation, it has the advantages of high detection accuracy and fast zeroing. The module receives host commands and outputs the digital results through the UART interface.The module has been calibrated before leaving the factory and is suitable for use in breath and fast screening breathalyzers products.

Feature Details

Breath alcohol concentration (BrAC) measurement characteristics
  • Effective range: 0.000mg/L~2.000mg/L
  • Error: 0mg/L ~ -0.040mg/L or 0 ~ -10%, the one with the larger absolute value is taken into use @ 0℃ ~ 40℃
  • Resolution: 0.001mg/L (BrAC), 1mg/100mL (BAC)
Operating voltage

3.0V~5.5V

Operating Current @ 25℃
  • Operating Current (Enable DC-DC): ≤500mA @ 5V
  • Operating Current (Disable DC-DC): ≤18mA @ 5V
  • Sleep Current: ≤6μA @ 5V
Communication interface

UART 9600bps, 8-N-1

Resources

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