A2L refrigerant detection sensors

Flow into A2L with efficient gas sensors for HVAC and Commercial refrigeration systems

Flow into A2L refrigerant gas detection with the new DST GS compact and DST G-series gas sensors by Danfoss Sensing Solutions, built with performance and reliability at the forefront. If you’re looking for A2L gas sensors to support your system design, get in touch with us for more details.

DST GS and DST G-series sensors

DST GS and DST G-series 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.

Features and benefits

Patented, compact & robust design
High IP66 rating in a compact casing (DST GS-series only).
Versatility
Flexible design, suitable for applications use with R454B and R32 refrigerants (DST G200 only) and with R454A, R454C and R455A (DST G300 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.

Contact us

If you are interested in our DST G or GS-series gas sensors or any other sensors from Danfoss Sensing Solutions, need expert advice, or wish to explore partnership opportunities, please reach out.

Mark R. Otten

Director of Segment Management and Pricing, Danfoss Sensing Solutions

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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.

Download white paper

Applications

The DST GS and DST G-series sensors are designed with focus on:

HVAC
Computer Room Air Conditioners (CRAC) units, Residential and Commercial Heat Pumps, Rooftops, Transport A/C, and A/C Scroll chillers.
Commercial refrigeration
Cold rooms, Food retail and Food service, Commercial refrigerators and freezers, display cabinets, compressor racks/packs.
Coil manufacturers
System builders requiring a dual refrigerant gas sensor.
Other industries
With applications using A2L refrigerants.

Fact box: Bringing the right gas sensor technology to market

Since the start of the refrigerant transition, our multidisciplinary team of experts has worked together with our customers to explore and test various gas sensing technologies.

We wanted to combine our 55+ years of experience in developing HVACR applications, with the latest research in this area, so we could base our solution on the technology and product design that would deliver the best results for our customers’ systems. Our TC sensor is the result of this collaboration, and it also marks the first step in our gas sensing journey. The next step in the journey will take us to Monterrey, Mexico, where we’re establishing a manufacturing footprint at our Danfoss campus. This location places us in proximity to our customers and will make it easier for us to partner with them to develop new gas sensing technologies. Our local presence will also improve speed-to-market and lead times and reduce transport emissions, so we can effectively meet the market’s increasing demand for sensor technology and support our customers’ growth.

Mark R. Otten

Segment Manager for Cooling & Heating, at Danfoss Sensing Solutions

If you are interested in our DST G or GS-series gas sensors:

Documents

Documents
Type	Name	Language	Updated	Download	File type

Approvals

CE marked
RoHS compliant
UL 60335-2-40
UL 60335-2-89

Approval Certificates


Type	Name	Approval authority	Language	Download	File type

Highlighted products

DST GS-series - Compact gas sensors for HVAC&R equipment

The latest addition is the DST GS-series gas sensors, developed to detect R454B, R32, R454A, R454C and R455A refrigerant type that meet the performance and reliability required to carry the company name. These sensors meet the requirements of UL 60335-2-89 for refrigeration equipment and the requirements of UL 60335-2-40 for HVAC equipment.

DST G4ze - A2L gas sensors for HVAC&R

New addition to the DST G-series is the DST G4ze gas sensor, developed to detect R1234ze refrigerant type, perfect for HVAC&R system builders looking for a reliable and accurate gas sensor. These sensors meet the requirements of UL 60335-2-40 for HVAC equipment.

DST G300 - Tri refrigerant gas detection sensors for Refrigeration equipment

The latest addition to the DST G-series is the DST G300 tri-refrigerant gas sensor, developed to detect R454A, R454C and R455A refrigerant type, perfect for refrigeration system builders, looking to reduce complexity while gaining flexibility in building A2L refrigerant compatible systems. These sensors meet the requirements of UL standards for refrigeration equipment.

DST G200 - Dual refrigerant gas detection sensors for HVAC equipment

The latest addition to the DST G-series is the DST G200 dual refrigerant gas sensor, developed to detect for R454B and R32 refrigerant type, perfect for coil manufacturers and system builders, looking to reduce complexity while gaining flexibility in building A2L refrigerant compatible systems. These sensors meet the requirements of UL standards for HVAC equipment.

DST G54A, DST G54C and DST G55A - A2L Refrigerant gas detection sensors for Commercial refrigeration equipment

Using field proven technology, Danfoss Sensing Solutions has developed the DST G54A, DST G54C and DST G55A A2L refrigerant gas sensors for R454A, R454C and R455A refrigerant type that meet the performance and reliability required to carry the company name. These sensors meet the requirements of UL 60335-2-89 for refrigeration equipment.

DST G54B and DST GR32 - A2L Refrigerant gas detection sensors for HVAC equipment

Using field proven technology, Danfoss Sensing Solutions has developed the DST G54B and the DST GR32 A2L refrigerant gas sensor for R454B and R32 refrigerant type that meet the performance and reliability required to carry the company name. These sensors meet the requirements of UL 60335-2-40 for HVAC equipment.