SKU: SENS-2138
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Sensirion SDP810-125PA Differential Pressure Sensor, 125 Pa, Digital I2C, Tube Port

₹3,209.00 (Inclusive of all taxes)
Out of Stock

The Sensirion SDP810-125PA is a digital differential pressure sensor with a tube port, designed for precise measurement of air and non-aggressive gases. It features a direct I2C digital interface for easy integration with microcontrollers, industrial PLCs, and data acquisition systems, making it ideal for HVAC and medical instrumentation applications.

Features

  • Digital differential pressure sensor with ±125 Pa measurement range.
  • CMOSens MEMS technology ensures high accuracy, zero drift, and long-term stability.
  • Direct I2C digital interface (2-wire) for simple microprocessor connection.
  • Wide operating voltage range from 3.0V to 5.5V with low power consumption.
  • Robust performance across a calibrated temperature range of -20°C to 85°C.

Out of stock

Description

The SDP810-125PA utilizes Sensirion’s patented CMOSens technology, integrating the sensor element, signal processing, and digital calibration on a single CMOS chip. This thermal flow-through sensing principle provides exceptional accuracy at the low end of the measurement range, with no offset drift and minimal hysteresis. The sensor is specifically calibrated for air and nitrogen.

Designed for high-volume, cost-sensitive OEM applications, it offers a fast response time and excellent signal-to-noise ratio. The digital output eliminates the need for external analog-to-digital conversion, simplifying system design and improving reliability in demanding environments such as HVAC systems, gas boilers, and medical devices.

Key Features

  • High-accuracy digital differential pressure sensing with ±125 Pa range.
  • Patented CMOSens MEMS technology for integrated signal processing and calibration.
  • Zero offset drift, hysteresis-free operation, and outstanding long-term stability.
  • Low power consumption: 3.8 mA (measuring), 1.1 mA (idle), 1 µA (sleep).
  • Fast measurement speed with 16-bit resolution and I2C communication up to 400 kHz.
  • Robust performance across a wide temperature range from -20°C to 85°C.
  • Compact design with tube port connection for easy system integration.
  • Ideal for high-reliability, mass-production applications in cost-sensitive OEM designs.

Applications

  • HVAC system airflow monitoring and Variable Air Volume (VAV) control.
  • Filter clogging detection and monitoring in industrial and medical equipment.
  • Gas boiler and pellet stove combustion air flow measurement.
  • Medical device respiratory and anesthesia machine pressure monitoring.
  • Cleanroom and laboratory environmental pressure differential control.

Technical Specifications

Manufacturer Part NumberSDP810-125PA
Pressure TypeDifferential
Pressure Range±125 Pa
Sensor TechnologyCMOSens MEMS (Thermal Flow-Through)
Output InterfaceDigital (I2C)
Supply Voltage3.0 V to 5.5 V
Supply Current (Measuring)3.8 mA
Supply Current (Idle)1.1 mA
Supply Current (Sleep)1 µA
Accuracy±3% of reading
Zero Point Accuracy±0.08 Pa
Calibrated MediaAir, N2
Operating Temperature-20°C to 85°C
Port StyleTube
Resolution16-bit
I2C SCL FrequencyUp to 400 kHz

Frequently Asked Questions

What is the operating voltage range for the SDP810-125PA sensor?

The SDP810-125PA operates from 3.0V to 5.5V DC. This wide range allows compatibility with both 3.3V and 5V microcontroller systems, such as Arduino, Raspberry Pi, and industrial PLCs, without requiring a level shifter.

What communication protocol does this pressure sensor use?

This sensor uses a standard I2C (2-wire) digital interface. It supports clock frequencies up to 400 kHz, enabling fast data readout and easy direct connection to a microprocessor's I2C bus for simplified system integration.

Is the SDP810-125PA suitable for medical applications?

Yes, its high accuracy, zero drift, and fast response make it well-suited for medical instrumentation, such as monitoring pressure in respiratory devices and anesthesia machines. It is calibrated for air and non-aggressive gases.

How do I connect the tube port on this sensor?

The sensor features integrated tube ports (barbed connectors) for easy connection to standard pneumatic tubing. Ensure tubing is securely attached to both the high-pressure and low-pressure ports for accurate differential measurement.

What is the power consumption in different operating modes?

Power consumption varies by mode: approximately 3.8 mA during active measurement, 1.1 mA in idle state, and just 1 µA in sleep mode. This allows for significant power savings in battery-powered or energy-conscious applications.

Package Includes

  • 1 x Sensirion SDP810-125PA Differential Pressure Sensor

Additional Information

Weight 0.008 kg
Dimensions 10 × 7 × 3 cm