Refrigerant Sensor Solutions for A2L, R290 and HVAC Leak Detection
Winsen provides refrigerant leak detection solutions for residential air conditioners, heat pumps, commercial HVAC, refrigeration systems and automotive air conditioning. Our product portfolio covers NDIR refrigerant sensors, thermal conductivity refrigerant modules, and semiconductor options for OEM integration.
Designed for refrigerant leak detection applications in HVAC and refrigeration equipment.
A2L and R290 Refrigerants Require Reliable Leak Detection
In HVAC and refrigeration markets, refrigerant selection is moving toward lower-GWP solutions such as R32, R454B and R290. While these refrigerants help improve environmental performance, they also increase the importance of leak monitoring, early warning and system safety design.
How NDIR Refrigerant Detection Works
NDIR refrigerant detection identifies target gases through their selective absorption of infrared light at specific wavelengths. Refrigerant gas enters the optical chamber, the infrared source emits light, and the detector measures the attenuation signal after the gas absorbs specific wavelengths. This principle supports stable, selective and quantitative refrigerant monitoring.
Complete Refrigerant Detection Product Portfolio
Winsen offers NDIR refrigerant sensor modules for R32, R454B and R290, together with thermal conductivity modules and semiconductor options for different design priorities.
Refrigerant Sensor Modules for Different Refrigerants and Applications
Use the product groups below to quickly compare suitable modules by refrigerant type, communication method, integration preference and target application.
ZRT512E Refrigerant Sensor Module
Dual-gas NDIR module designed for R32 and R454B refrigerant leak detection in air conditioning and heat pump applications.
Why Choose ZRT512E?
ZRT512E is suitable when OEM customers need a compact NDIR refrigerant module for R32 and R454B monitoring. It is especially valuable for air conditioning and heat pump systems that require dual-gas coverage, stable communication and convenient controller integration.
ZRT512 Refrigerant Sensor Module
Compact NDIR module for R290 refrigerant leak detection.
Recommended for Compact R290 Leak Detection
ZRT512 is suitable for OEM customers looking for a compact R290 detection module with NDIR selectivity and RS485 output. It supports system integration where size, stability and fast response are important.
ZRT512J Refrigerant Sensor Module
R290 NDIR module with RS485 communication and relay option, suitable for applications that require stronger linkage capability.
Stronger Signal Linkage for R290 Monitoring
ZRT512J is a strong option when the application needs not only refrigerant sensing but also relay-related linkage capability. It is well suited for R290 monitoring where stable system output and practical HVAC integration are required.
ZRT510E Refrigerant Sensor Module
Horizontal-structure R290 NDIR module designed for compact OEM installation.
For Equipment with Limited Installation Space
ZRT510E is suitable when OEM customers need an R290 NDIR module with a practical horizontal structure for easier installation. It is helpful in compact HVAC and refrigeration designs where space and integration flexibility matter.
ZR210 Thermal Conductivity Refrigerant Detection Module
Thermal conductivity refrigerant detection module for refrigerant leak detection applications.
An Alternative Refrigerant Detection Approach
ZR210 provides a thermal conductivity-based option for refrigerant detection scenarios. It is suitable for customers evaluating alternative refrigerant sensing routes in addition to NDIR-based modules.
How to Choose the Right Refrigerant Sensor Solution
The best choice depends on refrigerant type, sensor principle, communication requirement, available space, control strategy and application scenario.
| Model | Target koelmiddel | Beginsel | Uitvoer | Typical Advantages | Recommended Applications |
|---|---|---|---|---|---|
| ZRT512E | R32 & R454B | Is n | RS485 | Dual-gas detection, compact design, anti-condensation design | Residential air conditioner, heat pump |
| ZRT512 | R290 | Is n | RS485 | Compact size, selective detection, stable monitoring | R290 refrigeration / HVAC safety monitoring |
| ZRT512J | R290 | Is n | RS485 + relay option | Better linkage capability, anti-condensation design | Heat pumps, commercial HVAC, system linkage |
| ZRT510E | R290 | Is n | RS485 | Compact horizontal structure, easier installation | Space-constrained OEM integration |
| ZR210 | Refrigerant detection applications | Thermal conductivity | Module-based solution | Alternative detection route, compact module | Refrigerant leak monitoring integration |
Suitable for Multiple Refrigerant Leak Detection Scenarios
Winsen refrigerant sensor solutions can be integrated into multiple HVAC and refrigeration applications. Different modules can be matched according to refrigerant type, installation space, communication architecture and control requirements.
Built for Refrigerant Safety Monitoring
For A2L and R290 refrigerant applications, safety is not only about gas detection, but also about stable system response, practical equipment integration and reliable long-term monitoring. Winsen refrigerant sensor solutions are designed for this direction.
Flexible Integration for HVAC and Refrigeration Manufacturers
For OEM customers, the value of a refrigerant sensor lies not only in gas detection itself, but also in how easily it can be integrated into the controller, how stable the communication is, whether the module fits the available installation space, and whether the design supports practical HVAC operating conditions.
NDIR vs Semiconductor Refrigerant Detection
Different refrigerant detection technologies serve different design goals. NDIR solutions are often preferred when customers need wider operating condition coverage, better selectivity, more stable long-term monitoring and the ability to observe refrigerant concentration output more directly.
Common Questions from Refrigerant Sensor Projects
Below are some common concerns from HVAC and refrigeration equipment manufacturers when selecting refrigerant detection solutions.
1. What are the advantages of NDIR refrigerant modules compared with semiconductor refrigerant detection?
- NDIR solutions typically provide better selectivity for target refrigerants.
- NDIR products are often preferred when customers need more stable long-term operation and concentration-oriented monitoring.
- For OEM integration, NDIR solutions can be a better fit where system reliability, wide operating conditions and practical leak detection performance are priorities.
2. Which module should I choose for R32 or R454B detection?
- For R32 and R454B applications, ZRT512E is the recommended product direction on this page.
- It is especially suitable for residential air conditioner and heat pump refrigerant leak detection projects that need dual-gas capability and compact OEM integration.
3. Which Winsen products are suitable for R290 leak detection?
- ZRT512, ZRT512J and ZRT510E are the main R290-focused NDIR modules shown on this page.
- The selection depends on installation structure, communication preferences and whether relay-related linkage support is needed.
4. Can communication baud rate or default address be customized?
- For customers with special communication requirements, product-side communication settings can be discussed according to the project situation.
- Please provide your controller interface, communication protocol preference, and integration requirements when sending an inquiry.
Looking for the Right Refrigerant Sensor for Your HVAC or Refrigeration Equipment?
Tell us your refrigerant type, application scenario, controller interface, communication requirement, installation limitation and expected quantity. Winsen can help recommend a suitable refrigerant sensor module or integration direction for your project.