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    Sensirion AG Switzerland
    • Home
    • Environmental Sensors
      • Humidity Sensors
        • Digital Humidity Sensor SHT4x (RH/T)
        • Digital Humidity Sensor SHT3x (RH/T)
        • Digital Humidity Sensor SHT85 (RH/T)
        • Digital Humidity Sensor SHTC3 (RH/T)
        • Digital Humidity Sensor SHTC1 (RH/T)
        • Digital Humidity and Temperature Module SCC30-DB (RH/T)
        • SF2 Filter Cap
        • SHT31 Smart Gadget Development Kit
        • Digital Humidity Sensor SHTW2 (RH/T) (NRND)
      • Temperature Sensors
        • Temperature Sensor STS3x
        • Temperature Sensor STS32
      • Multi-Pixel Gas Sensors SGP
        • VOC Sensor SGP40
        • VOC Sensor SGP30 / SGPC3 (NRND)
        • Multi-Gas, Humidity and Temperature Module SVM30 (NRND)
      • Particulate Matter Sensor SPS30
      • Carbon Dioxide Sensors
        • Carbon Dioxide Sensor SCD4x
        • Carbon Dioxide Sensor SCD30
        • Carbon Dioxide Sensor STC31
      • Formaldehyde Sensor Module SFA30
      • Nubo Air
      • Evaluation Kit SEK-Environmental Sensing
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      • CO2 Sensor STC31

        The most efficient way to measure high CO2 concentrations

        The STC31 is a chip-sized gas concentration sensor for high range, accurate CO2 measurements designed for high-volume production. The sensor is based on a revolutionized thermal conductivity measurement principle, which results in superior repeatability and long-term stability. This makes the STC31 the perfect choice for applications where reliability is key.

        More

    • Flow Sensors
      • Liquid Flow Meters
        • Lx – Compact Liquid Flow Meters
          • Liquid Flow Meter LG16
          • Liquid Flow Meter LG01
          • Liquid Flow Meter LS32-1500
        • SLx – Standalone Liquid Flow Meters
          • Liquid Flow Meter SLI
          • Liquid Flow Meter SLG
          • Liquid Flow Meter SLQ-QT105
          • Liquid Flow Meter SLQ-QT500
          • Liquid Flow Meter SLS-1500
        • Liquid Flow Sensor SLF3x
        • Liquid Flow Sensor LPG10
        • Liquid Flow Sensor LD20
        • Liquid Flow Meter Kits
        • Customized (OEM) Liquid Flow Meters
      • Mass Flow Meters for Gases
        • Mass Flow Meter SFM3000
        • Mass Flow Meters SFM3003 and SFM3013
        • Mass Flow Meter SFM3019
        • Mass Flow Meter SFM3100
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        • Mass Flow Meter SFM5400
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        • Mass Flow Controller SFC5300
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      • Gas Sensors
      • Differential Pressure Sensors
        • Differential Pressure Sensor SDP3x
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      • Evaluation Kit SEK-Flow Sensing
      • Product Highlight

        Evaluation kit for the single-use liquid flow sensor LD20-2600B

        The LD20-2600B single-use liquid flow sensor for fast, precise and reliable measurements of the lowest flow rates in biomedical applications was successfully launched three years ago. The evaluation kit for this OEM liquid flow sensor can now also be purchased online via Sensirion's distribution network.

        Read more

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        Experts for Smart Sensor Solutions

        Sensirion's sensors are used in a wide range of markets and different applications. Our high-quality environmental and flow sensors and sensor solutions improve energy efficiency and sustainability. They increase our safety, support our health and raise the quality of life. 

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        Founded in 1998 Sensirion has become the leading manufacturer of flow and environmental sensors solutions. The company now employs people in various countries such as the USA, South Korea, Japan, China, Taiwan, and Germany. The headquarters in Switzerland is responsible for research, development, and production. 

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        Learn more: www.sensirion.com/GPTW

         

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    • Differential Pressure Sensor SDP3x

      The World's Smallest Differential Pressure Sensor

    • Home
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    • Differential Pressure Sensor SDP3x

    Differential Pressure Sensor SDP3x

    The World's Smallest Differential Pressure Sensor

    The SDP3x is the world's smallest differential pressure sensor. It measures just 5 mm x 8 mm x 5 mm, opening up new dimensions of integration and application possibilities. The sensor is based on the next generation of the CMOSens® sensor chip and is the heart of Sensirion's new sensor platform for measuring differential pressure and mass flow. 

    The SDP3x differential pressure is ideal for the measurement of mass flow in a bypass configuration. The sensor is reflow solderable, provides extended functionality, such as multiple I2C addresses and interrupt functions and a fast sampling time. Like all Sensirion differential pressure sensors, the SDP3x features excellent accuracy and long-term stability and has no zero-point drift. All this makes Sensirion's differential pressure sensor of the SDP3x series the perfect choice for high volume and cost-sensitive applications, where small size is essential.

    The digital and fully calibrated and temperature compensated differential pressure sensor are available in different versions. The digital SDP31 sensor and the analog SDP36 sensor measure bi-directional pressure differences up to 500 Pa, while the digital SDP32 and the analog SDP37 measure bi-directional pressure differences up to 125 Pa.

    An evaluation kit is available that enables simple and cost-effective evaluation of the SDP3x differential pressure sensor.

    The SDP3x Series

    SDP31 - digital version (I2C), pressure range: +/- 500 Pa

    SDP32 - digital version (I2C), pressure range: +/- 125 Pa

    SDP36 - analog version, pressure range: +/- 500 Pa

    SDP37 - analog version, pressure range: +/- 125 Pa


    Features

    • Smallest size (5mm x 8mm x 5mm), opening up new dimension of integration and applications possibilities
    • Measurement range ±500Pa (±2 in. H2O) or ±125Pa (±0.5 in. H2O), for other ranges contact Sensirion 
    • Excellent accuracy and repeatability, even below 1Pa 
    • No zero-point offset, no drift
    • Calibrated and temperature compensated 
    • Fast sampling time of 2kHz at 16 bit resolution
    • Digital I2C and analog output versions
    • Reflow solderable, shipped in tape and reel for pick and place 
    • Smart averaging algorithm and other digital and analog features 
    • Evaluation kit available

    Applications

    • Medical home care applications
    • Portable medical devices 
    • Smart Inhalers
    • Lifestyle and consumer (IoT)
    • Appliances
    • Drones
    • Wind speed meters

    Download Image

    Download Center

    Here you can find all documents of Sensirion's differential pressure sensors for download.


    Efficient Gas Flow Measurements in Bypass

    Measuring gas flow in applications requiring high precision and cost-efficiency is a challenge. Experience in recent years has shown that microthermal flow sensors are superior to other technologies. Industries with exacting demands, such as automotive and medical technology, have recognized that microthermal gas flow sensors give their products decisive advantages. These manifest themselves in high long-term stability and precision even when flow rates are minimal, and the sensors’ suitability for cost-efficient and reliable mass production.

    Read more

    Sensirion Measurement in a Bypass Configuration

    Differential Pressure Sensor SDP3x


    Related Products

    Sensirion Differential Pressure EK-P4 1

    Evaluation Kit EK-P4

    The evaluation kit EK-P4 enables an easy and cost-efficient evaluation and qualification of Sensirion's SDP3x differential pressure sensors. Test now the features of the differential pressure sensor.

    Sensirion Differential Pressure Sensors SDP800, SDP810

    Differential Pressure Sensors SDP800 Series

    Differential pressure sensors of the SDP800 series are the reliable solution for precise air flow measurement in most demanding, but cost sensitive HVAC applications.

    Fail-Safe Integration with Differential Pressure Sensors

    The SDP620 series sensor – in combination with a predefined testing algorithm run by an external microprocessor – is certified for class C safety level fail-safe operation.

    Sensirion Differential Pressure Sensor SDP2000

    Differential Pressure Sensor SDP2000

    The SDP2000 differential pressure sensor for measurements up to 3500 Pa is suited for demanding applications, for example medical and HVAC systems, where an extra high differential pressure range is needed.

    Technical Documents

    • Datasheet SDP3x Analog
    • Datasheet SDP3x Digital
    • Datasheet SDP33
    • Selection Guide DP
    • Engineering Guidelines SDP3x
    • Whitepaper Efficient Gas Flow Measurements in Bypass
    • Product Flyer Medical SDP3x
    • Product Flyer Consumer Electronics SDP3x

    Press

    • World’s smallest differential pressure sensor opens up new applications
    • New versions of the world’s smallest SDP3x differential pressure sensor
    • Sensirion Airspeed Sensors Revolutionize Workflow with PX4 VTOL Drones

    Markets

    • Medical
    • Automotive
    • Industrial
    • Consumer

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