Refrigerant Leak Sensor (Leak Detector) — Fixed Gas Monitoring for A1 / A2L / A3
Winsen® designs and manufactures industrial-grade refrigerant leak sensors and detectors for nonflammable A1 (e.g., R134a, R410A), mildly flammable A2L (R32, R454B, R1234yf/ze), and flammable A3 (R290, R600a) gases. Our portfolio covers NDIR ppm-level detection మరియు MOS/NDIR %LEL detection with 4–20 mA, RS-485 Modbus, and relay outputs—ready for BMS/PLC integration and volume OEM supply.
Product Collection — Choose the Right Refrigerant Leak Sensor
Winsen, a leading Chinese manufacturer and global supplier of gas sensors and modules, provides advanced refrigerant sensor solutions specifically designed for modern HVAC and refrigeration systems. Our refrigerant sensors help Oman-based customers achieve leak-free performance, శక్తి సామర్థ్యం, మరియు compliance with international safety standards.
NDIR Refrigerant Sensor
Semiconductor Refrigerant Sensor
How a Refrigerant Leak Sensor Works (Technology Options)
| Technology | Best For | Typical Range | Key Advantages | Considerations |
|---|---|---|---|---|
| NDIR | A1 HFC/HFO; A2L ppm; LEL (specialized) | ppm to %LEL | High selectivity & stability; low drift; long life | Higher initial cost than MOS; must avoid heavy dust/condensation (use filters/enclosure) |
| MOS (Semiconductor) | A2L/A3 %LEL monitoring | %LEL (0–100) | Fast response; robust; cost-effective | Cross-sensitivities possible; periodic recalibration recommended |
| Catalytic Bead (Pellistor) | General hydrocarbons (A3) | %LEL (0–100) | Mature, widely used for flammables | Requires O₂; can be poisoned by silicones/lead; frequent calibration |
| Portable Heated Diode/Corona | Handheld service leak finders | Qualitative to ppm | Pinpointing small leaks during maintenance | Not for continuous monitoring; technician-operated |
Alarm Strategy & Typical Setpoints
Alarm thresholds depend on local codes, room size, occupancy, ventilation, and refrigerant class. A common approach is:
| Refrigerant Class | Example Pre-Alarm | Example Main Alarm | గమనికలు |
|---|---|---|---|
| A2L / A3 (flammable) | ~25% LFL | ~50% LFL | Trigger ventilation & equipment shutdown via relays/BMS |
| A1 (non-flammable) | 1000–2000 ppm (typical design) | 2000–5000 ppm (typical design) | Early warning for toxicity/asphyxiation risk; evacuation/ventilation |
Setpoints should be confirmed against your applicable standards and risk assessment.
Applications of Winsen Refrigerant Sensors
VRF/VRV indoor units & hotel rooms
In Oman’s residential sector, air conditioning is a necessity. Leaks in systems using R32 or R410a can cause safety risks and increase electricity consumption. Winsen refrigerant sensors enable early detection, ensuring safe, efficient, and eco-friendly cooling for homes and villas.
Commercial HVAC – Hotels, Malls, and Offices
Commercial buildings across Muscat and Salalah rely on centralized cooling systems. Winsen’s NDIR refrigerant sensors provide continuous leak monitoring in hotels, shopping centers, and business towers, helping operators maintain compliance with GCC energy codes.
Refrigeration & Cold Storage – Food and Logistics Sector
Oman’s food and logistics industries use large-scale refrigeration systems for cold storage and transportation. Winsen refrigerant sensors detect leaks in R134a, R290, and R1234yf systems, ensuring food safety and temperature control stability.
Heat Pumps and Chillers – Industrial Cooling
For manufacturing facilities, desalination plants, and data centers, heat pumps and chillers are essential. Winsen’s high-precision refrigerant sensors offer accurate detection of flammable refrigerants, supporting industrial safety and operational reliability.
Automotive Air Conditioning – Passenger & Commercial Vehicles
Oman’s automotive service centers and vehicle manufacturers are adopting తక్కువ-జిడబ్ల్యుపి రిఫ్రిజిరేంట్లు like R1234yf. Winsen refrigerant sensors ensure passenger safety మరియు regulatory compliance in automotive AC leak detection systems.
Energy & Smart Buildings – Sustainability Monitoring
Aligned with Oman Vision 2040, smart buildings require efficient monitoring systems. Winsen refrigerant sensors integrate easily with BAS (Building Automation Systems), providing real-time leak detection, reducing emissions, and enhancing sustainability.
Core Specifications (Typical)
| పరామితి | Value / Option |
|---|---|
| విద్యుత్ సరఫరా | 12–24 VDC (others on request) |
| Outputs | 4–20 mA (2/3-wire), RS-485 Modbus RTU, 1–2× relays (N.O./N.C.) |
| Measurement Ranges | ppm (NDIR) and/or %LEL (MOS/NDIR), customizable by gas |
| ప్రతిస్పందన సమయం (T90) | ≤ 20–30 s typical |
| Operating Temp/Humidity | -20 to +50 °C; 15–95% RH non-condensing (model dependent) |
| Ingress Protection | Up to IP65 with optional enclosure |
| Compliance | CE, RoHS; designed for integration with BMS/PLC |
Sensor Technologies: NDIR vs. MOS
| లక్షణం | NDIR (Infrared) | MOS (Semiconductor) |
|---|---|---|
| ఖచ్చితత్వం | High (±2% FS) | Moderate (±5% FS) |
| Response Time | 1–3 seconds | <1 second |
| Power Consumption | <25 mW | <50 mW |
| జీవితకాలం | >5 years | 2–3 years |
| ఖర్చు | Higher | Lower |
| Best Use | Safety-critical HVAC & commercial | Low-cost appliances |
Recommendation for Oman:
For large-scale and safety-critical systems like district cooling, hotels, and cold storage, choose NDIR technology. For home appliances and low-cost products, MOS sensors provide a cost-effective alternative.
Why Global Clients Choose Us?
The company consistently adheres to the quality policy of “Fine Craftsmanship, Scientific Innovation, Pursuit of Excellence, and Value-Added Service.” By formulating production process control plans and work instructions, it has established a standardized, accountable, and regulated process management system. Additionally, the company has independently developed an MES production management system, enabling comprehensive and visual management across the entire workflow.
30+ YEARS OF EXPERIENCE
R&D, manufacture and sales of sensors and sensing solutions.
QUALITY GUARANTEE CONTINOUS IMPROVEMENT
Complete and rigid process flow control, coupled with significant improvements.
INTERNATIONAL MARKET
Deliver sensing products to more than 100 countries and regions.
STABLE SUPPLY CHAIN RELIABLE PRODUCTION
Core components not subject to constraints, advanced equipments for manufaturing and test.
R&D STRENGTH TECHNOLOGY INNOVATION
200+ patents, 180+ R&D team members, self-built labs for continous innovation.
ONE-STOP SERVICE
Professional consultation, fast delivery, 24 hours after-sales support.
Leading the Industry, Innovative & Controllable Technology
With robust R&D capabilities, we maintain sustained input in R&D and unwavering commitment to technological innovation. This not only ensures that we remain at the forefront of industry but also drives continuous innovation, leading the future trend of the sensing industry.
Compliance & Best-Practice Notes
Our engineering team helps you align sensor selection and placement with widely referenced safety frameworks for refrigeration/HVAC (e.g., A-series refrigerant classifications, machinery-room requirements, and A2L deployment guidelines). Implementation details vary by country and project—please share your specification so we can propose a compliant solution.
Installation, Commissioning & Maintenance
- Commissioning: function test outputs (4–20 mA/RS-485/relays), verify alarms, label setpoints.
- Calibration: recommended 12–24 months (usage-dependent); bump test during maintenance visits.
- Spare strategy: for critical sites, keep 10–15% spares or hot-swap modules to minimize downtime.
FAQs — Refrigerant Leak Sensors & Detectors
What is the difference between a sensor and a detector?
In HVAC, a fixed device is often called a “sensor” or “detector” interchangeably. Handheld tools used by technicians are typically called “leak detectors.”
Which technology should I choose for A2L refrigerants like R32 or R454B?
Use NDIR for ppm-level resolution and stability, or MOS/NDIR %LEL for safety alarms based on LFL percentages. Many projects use both: ppm early warning + %LEL shutdown.
Where should sensors be mounted for refrigerants?
Most refrigerants are heavier than air—mount low, near leak sources and where gas could accumulate. Validate with airflow studies and site conditions.
How often do sensors need calibration?
Typical intervals are 12–24 months depending on technology and environment. Critical sites may choose more frequent bump tests.
Do you support BMS/PLC integration?
Yes. Standard outputs include 4–20 mA, RS-485 Modbus RTU, and relay contacts.
Can you customize for OEM projects?
Absolutely. We support custom ranges, firmware, connectors, harnesses, branding, and private-label packaging for volume customers.
