SGEM21 เซนเซอร์วัดแอลกอฮอล์ Alcohol Sensor Module ZE30-C2H5OH

Technical Parameter

• Model ZE30-C2H5OH
• Output
  1. UART
  2. DAC ( 0.4～2V Voltage output) Sensor Amplified Voltage signal
• Working Voltage DC3.7V ~ 5.5V
• Preheat time ≤ 3minutes
• Response​ Time ≤ 60s
• Detection Range 0~5 ppm
• Operating Temperature -20～50 Degrees Celsius

Pin Definition

• Pin 1 NC
• Pin 2 DAC Analog Output (Voltage 0.4~2V for 0~full measurement )
• Pin 3 GND
• Pin 4 Vin (Voltage input 3.7V~5.5V)
• Pin 5 UART(RXD) 0~3.3V data input
• Pin 6 UART(TXD) 0~3.3V data output
• Pin 7 NC

Dimension

Communication Protocol

• Baud Rate 9600
  Data Byte 8 bytes
  Stop Byte 1 byte
  Check Byte Null

Communication Commands

Checksum and calculation

unsigned char FucCheckSum(unsigned char *i,unsigned char ln)
{ 
unsigned char j,tempq=0; i+=1; 
for (j=0;j<(ln-2);
j++) {
tempq+=*i; i++; 
} tempq=(~tempq)+1; 
return(tempq); 
}