MEMS H2 sensor module for hydrogen
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For each sensor module,
1. Built-in Temperature compensation and external Humidity compensation available.
2. Another version of sensor module with 5V voltage.MEMS Hydrogen H2 sensor module
The H2 gas sensor module based on MEMS gas sensor is used to test the content of H2 gas in the ambient air. The test data is communicated through I2C and UART interfaces.
The MEMS gas sensor is protected by a filter cover, and the H2 gas sensor module can be assembled with patch or flat wire as required.
Feature:
Highly sensitive to H2 gas
Strong anti-interference to VOCs
Built-in temperature compensation algorithm, external humidity compensation
High sensitivity and fast response
Very low power consumption (<66mW)
Small size (17.8mm × 15.2mm × 6.5mm）
Highly flexible assembly mode and communication interface
Performance parameterItem
Instruction
Sensing principle
MEMS metal oxide semiconductor sensor
Sensing range
0-5000 ppm H2 relative concentration
Preheating time
3 min.
Communication protocol
I2C, UART
Calibration method
Intelligent automatic baseline calibration.
The reference value can be reset
A: UART_TX B: +3.3V
C: NA D: SDA
E: GND F: SCL
G: NA H:UART-RX
Pitch: 2.54mm
P1: VDD P2: SCL P3:SDA
P4:Rx P5:Tx P6:GND
Pitch: 1.25mm
Locating hole Φ 2.0 mm
Power requirements
Parameter
Specification
Voltage
3.3V±0.1V, max. 20mV ripple
Power consumption
Max. 66mW @3.3VDC (20mA)
test interval
1 Sec.
UART serial communication
Parameter
Specification
baud rate
9600 bits/s
data bits
8
Check Digit
None
stop bit
1
Protocol
1. The host sends 0xFF 67 01 01 97 to automatically upload data once a second, Send 0xFF 67 00 00 99 Cancel
2. The host sends 0xFF 61 02 01 9C to obtain a 13-byte packet
3. The host sends 0xFF 52 01 01 AC to set the current measured value as the reference value
I2C bus communication
Parameter
Specification
communication rate
Standard Mode:100kbits/s
Module address
0xA2 (7-bit address mode 0x51)
module output
Get a 13-byte packet with a read operation
Baseline reset
Set the current measurement value as the reference value by writing 0x520101AC (5 bytes)
