Breaking the size barrier in CO<sub>2</sub> sensing: SCD4x Evaluation Kit available now

17 Feb 2021
Ellen Simms
Product and Reviews Editor

Sensirion, an expert in environmental sensing, proudly presents the SEK-SCD41 CO2 sensor evaluation kit. The SEK-SCD41 evaluation kit has been designed for easy and cost-efficient evaluation of Sensirion’s revolutionary SCD4x CO2 sensor.

High levels of carbon dioxide (CO2) compromize humans' cognitive performance and well-being. Thanks to new energy standards and better insulation, houses have become increasingly energy efficient. However, CO2 produced by the human metabolism can accumulate rapidly. Therefore, CO2 is a key indicator for indoor air quality. Measuring indoor CO2 concentration enables smart ventilation systems to regulate ventilation in the most energy-efficient and human-friendly way. Moreover, indoor air quality monitors and other connected devices can help to maintain a low CO2 concentration for a healthy, productive environment.

The SCD4x is Sensirion’s next-generation miniature CO2 sensor series that offers an unmatched price-to-performance ratio. The sensor is built on the photoacoustic sensing principle and Sensirion’s patented PASens® and CMOSens® Technology to enable unmatched small sensor size combined with high performance. SMD compatibility and the small footprint allow cost- and space-effective integration to boost freedom of design for customers. The integrated best-in-class humidity and temperature sensor enables superior on-chip signal compensation and additional RH and T outputs. Finally, the large supply voltage range (2.4 V – 5.5 V), the robustness to external stresses and the adjustable power consumption make the SCD4x the perfect fit for varying customer needs.

“Our disruptive SCD4x makes CO2 sensing accessible for new applications and enables customers to use novel design-approaches. The SEK-SCD41 evaluation kit represents the perfect tool kit for effective SCD4x sensor evaluation and efficient prototyping”, says Marco Gysel, Product Manager CO2 Sensors at Sensirion. The evaluation kit contains a SCD41 CO2 sensor mounted on a development board with a JST connector and through-hole pins. The included adapter cable (JST-Ethernet) connects to Sensirion’s SEK-SensorBridge for easy evaluation of the sensor via the SEK-ControlCenter viewer software. Finally, the kit contains a 4-pin jumper wire cable that enables fast prototyping, e.g. through integration into existing platforms (like Arduino, Raspberry Pi and so on).

Start evaluating the SCD4x CO2 sensor; the kit is now available worldwide through Sensirion’s distribution network. The SCD40 and SCD41 sensor components will be available soon.

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Mass Flow Meter SFM5400

Sensirion

The SFM5400 mass flow meter measures mass flows with outstanding accuracy (errors < 1%), long-term stability and repeatability and covers an impressively wide dynamic measurement range. The SFM5400 is made of metal and highly configurable. It is available with a variety of fluidic connections and various interfaces and measures maximum flow rates between 50 sccm and 100 slm. The sensor signal is directly converted into a digital, completely calibrated and temperature-compensated signal on the chip.  Multiple gas calibrations can be stored on a single device. Additionally, the flow meter can check whether the activated gas calibration matches the actual gas present. The SFM5400's versatility makes it the ideal solution for industrial and medical applications. The outstanding performance of the SFM5400 mass flow meter is based on the innovative CMOSens® Technology, which integrates the high-precision sensor element and the analog and digital processing electronics on a single CMOS silicon chip. Combined with high-quality materials, the result is a durably stable, extremely fast and highly precise mass flow meter. The SFM5400 mass flow meter is the valve-free version of the SFC5400 mass flow controller. The SFC5400 mass flow controller has the same performance characteristics as the mass flow meter and is used in similar applications, and the two products can be ideally combined. You can find further information and detailed specifications about the mass flow controller on the SFC5400 website. Features High accuracy at low flow rates (< 1 sccm) Excellent accuracy / repeatability (0.8% / 0.1% of measured value respectively) Wide dynamic range (turndown ratio 1000:1) Multiple gases and gas recognition Digital and analog interfaces Flexible mechanical connection options: down mount, VCR and VCO, Swagelok, C-/W-Seal, etc. Highly configurable MTBF 169 years - no recalibration required

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