Renesas launches its first thermopile CO2 sensors

September 16, 2021 // By Nick Flaherty
Renesas launches its first thermopile CO2 sensors
Renesas Electronics has launched its first range of thermopile-based detectors with integrated optical filters for optical (NDIR) CO2 sensors.

The four single- and dual-channel silicon analog CO2 detectors are packaged in a TO-5 5pin can for industrial, medical and IoT applications. There are two versions with different active areas. One with 0.6 x 0.6 mm and one with 1.2 x 1.2 mm surface area.

CO2 levels are a major component of indoor air quality (IAQ) measurement, particularly post-Covid-19, and thermopile-based detectors are a key building block of sensing systems such as HVAC control, air quality monitoring, surgical equipment, and capnography equipment for ventilator systems.

The detectors have a time constant ranging from 18 to 25 ms and a high signal-to-noise ratio ranging from 1,981 to 4,953 for high reliability in extended temperatures up to 125°C.

The sensors can be combined with ZMOD4410 IAQ platform featuring embedded AI and an IP67-rating package option, and/or its HS3001 relative humidity and temperature sensor. Together with Renesas microcontrollers (MCUs), this combination enables a complete environmental sensing solution for medical or industrial applications.

“With more people spending longer hours indoors during current events, many home, healthcare, educational, and work environments are adopting HVAC systems and equipment with increasingly sensitive detection features to ensure healthy CO2 levels,” said Uwe Guenther, Senior Director, Sensing Solutions, IoT and Infrastructure Business Unit at Renesas. “The thermopile-based detectors support the development of the highest performance CO2 sensors, enabling manufacturers of HVAC systems and other medical and industrial applications to meet the changing requirements for CO2 detection at an affordable price point, delivering real-time feedback for these mission-critical applications while maintaining high accuracy and reliability.”

Renesas has also combined the thermopile-based detectors with analog and power devices and Dialog’s Bluetooth Low Energy system on chip to create the new Thermopile CO2 Detector reference design

The RH5Z0610D, RH5Z0622D, RH5Z1210D, and RH5Z1222D thermopile detectors and thermopile detector evaluation kit are available now.

renesas.com/thermopiledetectors

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