European HVAC industry transitions to natural refrigerants

As reported by Asahi Kasei Microdevices (AKM), the European HVAC industry is moving away from synthetic refrigerants due to stringent environmental regulations.

These regulations, targeting PFAS and F-gases, are driving the adoption of natural alternatives like R290, a highly flammable propane gas.

However, the shift to R290 requires reliable and precise leak detection to ensure safety.

Senseair, a subsidiary of AKM, has developed a new gas sensor, Sunlight R290, designed to address these safety concerns.

The sensor features high measurement accuracy and a broad operating range, making it suitable for the European market’s evolving needs.

Advanced NDIR technology ensures reliable detection

The Sunlight R290 gas sensor utilises advanced non-dispersive infrared (NDIR) technology, which minimises heat generation and reduces the impact of vibrations or interfering gases.

According to AKM, this technology allows the sensor to meet the rigorous leak detection standards of the IEC 60335-2-40 safety standard, ensuring safe operation in HVAC systems.

With a measurement range of 0-100% of the lower flammable limit (LFL) and an accuracy of +/- 2.5% LFL, the sensor offers robust performance.

It is specifically designed for use in air conditioning units, heat pumps, and similar applications, where precise leak detection is critical.

Energy-efficient design supports extended service life

Sunlight R290 is engineered for energy efficiency and longevity.

It operates within a wide temperature range of -40°C to 70°C and can handle relative humidity levels from 0 to 95%.

The sensor’s low power consumption of 94 μA and compact size make it ideal for various HVAC applications.

AKM reports that under normal conditions, the sensor can function maintenance-free for over 15 years.

This long service life is supported by an automatic baseline correction (ABC) algorithm, which maintains accuracy without the need for regular adjustments.

Standalone system offers flexibility in refrigerant detection

In addition to being integrated into HVAC equipment, the Sunlight R290 sensor is available as part of a standalone refrigerant detection system, known as RDS R290.

This system allows for independent leak detection, providing flexibility for users who may not want to integrate the sensor directly into their equipment.

The standalone system ensures that leak detection can be implemented without significant changes to existing setups, offering a versatile solution for various HVAC applications.

R290 gas sensor improves safety and accuracy in European HVAC systems: Summary

The European HVAC industry is transitioning to natural refrigerants like R290 due to environmental regulations restricting the use of synthetic options.

Senseair, a subsidiary of Asahi Kasei Microdevices (AKM), has developed the Sunlight R290 gas sensor to address the safety challenges associated with this highly flammable refrigerant.

Utilising advanced NDIR technology, the sensor provides accurate and reliable leak detection while operating efficiently across a wide temperature and humidity range.

Additionally, the sensor is available as part of a standalone system, offering flexible implementation options for HVAC systems.