The HX710B 0-40KPa pressure sensor module combines a 0–40 kPa Wheatstone bridge pressure element with a 24-bit analog-to-digital converter (HX710). It operates on 3.3V to 5V DC, supports a 2.5mm pneumatic hose, and is commonly used with microcontrollers like Arduino for air pressure, water depth, or breath monitoring.
Key Specifications
- Pressure Range: 0 to 40 kPa (approx. 0 to 5.8 PSI)
- Operating Voltage: 3.3V to 5V DC
- ADC Chip: HX710 (24-bit resolution with fixed 128x gain differential input)
- Interface: Two-wire clock/data interface (similar to SPI/HX711 protocols)
- Port Size: Fits standard 2.5mm internal diameter tubing/hose
Pinout & Connections
- VCC: Power supply (3.3V or 5V)
- GND: Ground
- OUT / DOUT: Data Output (ADC serial data)
- SCLK / PD_SCK: Clock Input (controls data retrieval and sleep mode)
Common Use Cases
- Water Level / Depth Detection: Submerging a connected sealed tube underwater to measure hydrostatic pressure.
- Breathing & Airflow Monitors: Tracking non-corrosive gas or air pressure variations.
- Industrial & Medical Monitors: Low-range pneumatic testing and environmental monitoring.