3 Sensirion sensors in one - a combined solution for air quality sensing

SEN54-SDN-T, the environmental sensor node Sensirion, integrates particulate matter (PM), volatile organic compound (VOC), relative humidity (RH), temperature (T) sensors and a microcontroller. Now you can bring your product to market faster and with lower development costs. (2 minutes reading)

3 Sensirion sensors in one - a combined solution for air quality sensing
Miroslav Piskor, Product Specialist at SOS electronic, has prepared some interesting information about the new Sensirion combined solution in the field of air quality sensing.

“Sensirion strives to make the integration of SEN54 into your product as easy as possible. They provide mechanical design and assembly guidelines and 3D models. To accelerate SW development, Sensirion offers source code for the generic driver, and Arduino and Raspberry Pi drivers.”

You can find all the documentation on the SEN54 product page.

Technology and Benefits of SEN54-SDN-T sensor node Sensirion

PM Sensing

All-in-one air quality sensing solution SEN54, just like SPS30, uses optimized flow channel geometry that minimizes turbulence and sheath-flow technology - air filtered through a HEPA filter surrounds the stream with particulate matter particles and prevents the particles from circulating or settling in the optical chamber. This allows SEN54 to operate 24 hour/day for more than 10 years.
PM 2.5 mass concentration is calibrated according to high-end reference instrument TSI DustTrak DRX 8533. SEN54 measures mass concentration of PM1.0 and PM2.5 particles. PM4.0 and PM10 outputs are estimated from PM1.0 and PM2.5 measurements considering typical aerosol profiles.

RH and T Sensing

The SHT4x RH/T sensor is placed inside of SEN54, but the mechanical design ensures an optimal coupling to the ambient environment. Internal algorithm compensates measured values for SEN54 self-heating and, in addition, it allows improvement of the response time by setting of STAR (Sensirion Temperature Acceleration Routine) parameters.

VOC Sensing

Sensirion VOC Algorithm processes the measured values from SGP40 and transforms them into a VOC index in the range 0 to 500. The algorithm is tunable by using 6 different parameters.

3 Sensirion sensors in one - a combined solution for air quality sensing

Features

  • Communication through I2C 
  • RH sensing accuracy ±4.5% 
  • Temperature sensing accuracy ±0.45°C
  • Particulate matter sensing:
  • Mass concentration precision for PM1 and PM2.5: ±5 μg/m3 ± 5% measured value
  • Mass concentration precision for PM4 and PM10: ±25 μg/m3
  • VOC sensing: < ±15 VOC Index points or 15 % VOC Index (the higher value applies)

Applications

  • Air purifiers
  • Air quality monitors 
  • Air conditioners
  • Ventilation systems

How to Start?

The easiest way is to connect the SEK-SEN5x evaluation kit to the PC through SEK-SensorBridge and use Sensirion’s ControlCenter software. The kit also contains a 4-pin jumper wire cable that enables integration into existing platforms like Arduino, Raspberry Pi, etc. Source codes are available on Sensirion githube.

If you need more information about Sensirion products, please contact our sales representative for your region or send us an email to sales@soselectronic.com ; we will be happy to help you.

Videos

SEN5x is an all-in-one sensor solution platform for the measurement of various environmental parameters such as particulate matter, volatile organic compounds, oxidizing gases, temperature, and humidity.

Thanks to proprietary algorithms, the module enables straightforward integration into various applications.

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