Flow into A2L with efficient gas sensors for HVAC and Commercial refrigeration systems
Flow into A2L refrigerant gas detection with the new DST Gxxx refrigerant detection sensors by Danfoss Sensing Solutions, built with performance and reliability at the forefront.
DST Gxxx A2L refrigerant detection sensors
DST Gxxx A2L gas detection sensors feature a revolutionary inverted design, which protects the sensor in harsh environments, supporting 5 different A2L refrigerants with the option of additional refrigerants added upon demand. Using Thermal conductivity, a field proven technology, our sensors meet the requirements for HVACR equipment.
With patented top-down design that protects sensors from all common contaminants you can get 15+ years of performance as estimated per our extensive internal testing.
Prioritize safety, reduce maintenance and ensure supply
Proven high-speed thermal conductivity sensors delivers excellent response time, ensuring maximum safety for users and equipment. And as a leading tech developer with in-house production, Danfoss offers a resilient supply chain, ensuring to meet your demands and maintain a steady delivery to support your business growth.
Features and benefits
Versatility
Flexible design, suitable for applications use with R454B and R32 refrigerants (DST G200 only).
Rapid and Accurate Leak Detection
Compensated over full range of temperature humidity and pressure ranges.
Eliminate False Alarms with Dewpoint Avoidance
Dewpoint monitoring and heated enclosure prevents condensation in the housing.
Immune to Dust, Oil and Water Spray
Strategic, patent-pending sensor positioning using diffusion flow principles protects sensor from exposure.
UV Protected
All exposed materials are impervious to sustained UV exposure.
No Field Service Requirements
Permanent factory calibration. No field adjustments or re-zeroing during 15+ year life as estimated per our extensive internal testing.
Minimized “Silent” Failures
Robust “full signal chain” diagnostics check for faults and integrity of signal chain.
Easy System Integration
Flexible hardware and software to customer’s application specifications.
Articles
Thermal conductivity: the best technology for the A2L HVACR market
This whitepaper answers two key questions: why thermal conductivity is the best technology for quickly and accurately detecting A2L gas leaks and how product design impacts a thermal conductivity sensor’s effectiveness and durability.
Applications
The DST Gxxx A2L Refrigerant detection sensors are designed with focus on:
HVAC
Computer Room Air Conditioners (CRAC) units, Residential and Commercial Heat Pumps, Rooftops and A/C Scroll chillers.
Commercial refrigeration
Cold rooms, display cabinets, compressor racks/packs.
Coil manufacturers
System builders requiring a dual refrigerant gas sensor.
Other industries
With applications using A2L refrigerants.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Data sheet | A2L Gas Sensor, Types DST G54A, DST G54C, DST G55A | English | Multiple | 06 Apr, 2025 | 3.1 MB | |
| Data sheet | A2L Gas Sensor, Types DST G54B, DST GR32 | English | Multiple | 06 Apr, 2025 | 1.5 MB | |
| Installation guide | A2L Gas Sensors, Relay, MODBus and Dual Output | French | Multiple | 13 Nov, 2024 | 418.8 KB | |
| Installation guide | A2L Gas Sensors, Relay, MODBus and Dual Output | English | Multiple | 22 Aug, 2023 | 425.0 KB | |
| Data sheet | AI525235647738en-000101_Types DST G200 | English | Multiple | 29 May, 2025 | 1.2 MB | |
| Brochure | DST G-series A2L refrigerant detection sensors brochure | Spanish, Castilian | Spain | 11 Mar, 2025 | 1.0 MB | |
| Brochure | DST G-series A2L refrigerant detection sensors brochure | English | Multiple | 28 Mar, 2025 | 1.1 MB | |
| White paper | Thermal conductivity: the best technology for A2L HVACR market | English | Multiple | 16 Jan, 2024 | 3.4 MB | |
| Electrical Safety Certificate | UL E534311-20240718_20240722 | English | Multiple | 01 Jul, 2025 | 261.2 KB |
Approvals
CE marked
RoHS compliant
UL 60335-2-40
UL 60335-2-89
Approval Certificates
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