Sunlight R290

Electronics with no moving parts makes Senseair Sunlight R290 robust and resistant to vibrations. Any application with a tough environment or in environments with explosion risk is benefited by the solid-state design. It is also the first NDIR sensor with LED technology that truly saves power while maintaining a high precision.

Senseair Sunlight Propane is designed for high volume production with full traceability by sensor serial number on all manufacturing processes and key components.

Every sensor is individually calibrated and is provided with UART (Modbus) and I2 C interface. With the ABCfunction activated, the sensor is maintenance free.

This product is a module that is designed for simple integration into products. Senseair Sunlight Propane can be used in a wide range of refrigerant applications based on R290.

Defining attributes

  • Immunity to poisoning
  • Complies with
  • UL 60335-2-40 ed.4
  • IEC 60335-2-40 ed.7
  • IEC 60079-29-1
  • High accuracy
  • High resolution
  • Fast response time
  • -40 – 70 °C operating temperature
  • >15 years expected lifetime
  • Maintenance free

We at Senseair believe in quality and accuracy. When it comes to gas measurements, you want a sensor that you can always trust – without the need for maintenance. Equipped with a self-correcting algorithm (ABC: Automatic Baseline Correction), you can mount your Sunlight sensor and then leave it alone for 15 years while maintaining a robust system. Our Sunlight sensors are optimized for battery and wireless applications, or in places where you need a reliable and secure sensor with a long life.

Senseair’s Sunlight R32 can be used in a wide range of refrigerant applications. Using LED as the light source and a photodiode in the sensor section ensures highly safe operation of equipment that uses a mildly flammable refrigerant (R32).

Article number 009-4-0002
Operating principle Non-dispersive infrared (NDIR)
Measured gas Propane, R290
Measurement range 0-100% LFL
Accuracy ±5% LFL
Operating range RH <95 % RH
Operation range °C -40 - 70 °C
Warm-up time TBA
Response time Non-dispersive infrared (NDIR)
Power supply DC
Peak current 95 mA
Average current 84mA
Communication I2C, UART
Outputs TBA
Compliance TBA
Maintenance Senseair Sunlight has a built-in self-correcting ABC algorithm. ABC period is adjustable by host and comes default with ABC ON and an ABC period of 720h. Discuss your application with Senseair in order to get advice for a proper calibration strategy.
Life expectancy >15 years
Dimensions 34 x 21 x 12 mm (L x W x H)
Weight 5 g
Storage conditions -40-85 °C
Article number Product Description
009-4-0001 Sunlight R32 Robust and flexible refrigerant detection for R290
009-4-0002 Sunlight R290 Robust and flexible refrigerant detection for R290
006-1-0100 Sunlight CO₂ Robust and flexible refrigerant detection for R290

Product Product number
Sunrise & Sunlight Evaluation Kit 00-0-0108