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SDP810-125PA

SENSDP810-125PA

Sensirion AG
Pressure Sensor ±0.018PSI (± 0.125kPa) Differential Male - 0.2" (5.2mm) Tube, Dual 16 b Module
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Overview

The SDP810-125PA is a high-performance differential pressure sensor designed for high-volume applications, featuring a measurement range of +/-125 Pa (+/- 0.018 PSI). It utilizes Sensirion's CMOSens technology to provide a fully calibrated and temperature-compensated digital I2C output with 16-bit resolution. The device is housed in a module with dual 5.2mm barbed tube connections, making it ideal for HVAC and medical ventilation monitoring.

Why Choose This Part

The sensor offers excellent repeatability and long-term stability without zero-point drift, which is critical for maintenance-free operation in HVAC systems. It features a wide supply voltage range from 2.7V to 5.5V and consumes only 1uA in sleep mode, making it suitable for battery-powered environmental monitors.

Applications

HVAC Airflow Monitoring
Measuring differential pressure across filters or within ducts to maintain efficient airflow and air quality.
Medical Ventilators
Precise monitoring of patient breathing cycles and gas delivery in respiratory care equipment.
Burner Control
Optimizing the fuel-to-air ratio in industrial and domestic furnaces by monitoring pressure drops.
VAV Controllers
Providing accurate feedback for variable air volume systems in smart building management.

Key Specifications

Output 16 b
Accuracy +/-3%
Features Temperature Compensated
Port Size Male - 0.2" (5.2mm) Tube, Dual
Port Style Barbed
Output Type I2C
Applications Board Mount
Pressure Type Differential
Package / Case Module
Maximum Pressure 14.5PSI (100kPa)
Voltage - Supply 3V ~ 5.5V
Operating Pressure +/-0.018PSI (+/- 0.125kPa)
Operating Temperature -20degC ~ 85degC

Getting Started

Connect the sensor to an I2C bus using the 4-pin module interface and a 3.3V or 5V power supply. Sensirion provides C++ and Python drivers to interface with the sensor, allowing engineers to read pressure and temperature values over the standard I2C protocol at a maximum sampling rate of 2kHz.

Also Consider

SDP810-500PA SENSensirion AG - An identical form-factor alternative if a wider pressure range of +/-500 Pa is required for higher velocity applications.
ABP2 Series Honeywell - A competitive piezoresistive alternative if your application requires a different mechanical mounting style or specific pressure ports.