Electronic Refrigerant Leak Sensor (Detector) — Fixed Monitoring for A1 / A2L / A3
Winsen® electronic refrigerant leak sensors deliver continuous, automated monitoring for A1 (R134a, R410A, etc.), A2L (R32, R454B, R1234yf/ze), and A3 (R290, R600a) gases. Choose आहे एन for ppm early warning or MOS/NDIR for %LEL safety interlocks. Standard outputs—4–20 mA, RS-485 Modbus, आणि relays—simplify BMS/PLC integration for VRF rooms, chiller plants, cold storage, data centers, and heat-pump installations.
What “Electronic” Means in Leak Sensing
“Electronic refrigerant leak sensor” typically refers to a fixed, powered detector that continuously measures refrigerant concentration and drives alarms/interlocks—distinct from dyes or soap-bubble tests. Handheld electronic leak detectors (heated diode/corona) are for maintenance pinpointing; this page focuses on fixed electronic sensors for 24/7 protection.
NDIR रेफ्रिजरंट सेन्सर
सेमीकंडक्टर रेफ्रिजरंट सेन्सर
Model Guide — Select by Refrigerant Class & Measurement
A1 HFC/HFO — NDIR PPM
- Typical ranges: 0–1,000 / 0–5,000 ppm
- Outputs: 4–20 mA, RS-485 Modbus, 1–2 relays
- T90 ≤ 30 s • Low drift, long life
A2L Low-GWP — NDIR PPM or %LEL
- PPM early warning (NDIR) and/or 0–100% LFL/LEL
- 4–20 mA / RS-485 / relays
- Ideal for VRF rooms & heat pumps
A3 Flammable — %LEL Safety
- Range: 0–100% LEL (NDIR-LEL or MOS)
- Relays for fan/start-stop interlocks
- Rugged housings up to IP65
How It Works — Technology Overview
| तंत्रज्ञान | साठी सर्वोत्तम | Range | फायदे | विचार |
|---|---|---|---|---|
| आहे एन | A1 ppm, A2L ppm/%LEL | ppm → %LEL | High selectivity & stability; low drift; long life | Protect from heavy condensation/dust (filters/enclosures) |
| मॉस | A2L/A3 %LEL | 0–100% LEL | जलद प्रतिसाद; मजबूत किफायतशीर | Some cross-sensitivities; periodic calibration advised |
| Catalytic Bead | General hydrocarbons | 0–100% LEL | Well-proven for flammables | Needs O₂; susceptible to poisons (silicones/lead) |
Placement & Setpoints — Good Practice
- Mounting height: Most refrigerants are heavier than air ⇒ mount low; confirm with airflow studies.
- Coverage: ~5–10 m radius per sensor in unobstructed rooms; add units near valves/joints and low pockets.
- Alarm tiers: A2L/A3: pre-alarm ≈25% LFL; main ≈50% LFL. A1: ppm bands (e.g., 1,000–5,000 ppm) depending on spec.
- Interlocks: Pre-alarm → ventilation; Main → equipment shutdown + alarms (horn/beacon/BMS event).
Finalize thresholds and quantities against local codes and your project specification.
Typical HVAC Applications
VRF/VRV indoor units & hotel rooms
Mount low (~150–300 mm AFF) near indoor units and pooling points; link alarms to fan shutdown and fresh-air purge.
Chiller & machinery rooms, compressor racks
Place around compressors, oil separators, valves, and low spots/sumps; IP-rated housings recommended.
Cold storage & refrigerated display cases
Install beneath cases and along manifolds; choose condensation-resistant designs and night-curtain interlocks.
Data center in-row/CRAC units
Put in return air, under raised floors, near coils; ppm early warning protects uptime, with BMS ventilation override.
Heat pump & general HVAC equipment
For A2L/A3, use %LFL setpoints for safe shutdown; weatherproof housings for outdoor units.
मुख्य तपशील (नमुनेदार)
| पॅरामीटर | मूल्य / पर्याय |
|---|---|
| Power | 12-24 VDC (विनंतीनुसार इतर) |
| आउटपुट | 4–20 mA (2/3-wire), RS-485 Modbus RTU, 1–2 relays (N.O./N.C.) |
| Measurement | NDIR ppm and/or %LFL (MOS/NDIR-LEL) |
| प्रतिसाद वेळ (टी 90) | ≤ 20-30 s ठराविक |
| Operating Conditions | −20…+50 °C; 15–95% RH non-condensing (model-dependent) |
| Enclosures | Wall, panel, duct probes; housings up to IP65 |
| अनुपालन | CE & RoHS; designed for BMS/PLC integration |
सेन्सर तंत्रज्ञान: NDIR वि. MOS
| वैशिष्ट्य | NDIR (इन्फ्रारेड) | एमओएस (सेमीकंडक्टर) |
|---|---|---|
| अचूकता | उच्च (±2% FS) | मध्यम (±5% FS) |
| प्रतिसाद वेळ | 1-3 सेकंद | <1 second |
| वीज वापर | <25 mW | <50 mW |
| आजीवन | >5 years | 2-3 वर्षे |
| खर्च | उच्च | खालचा |
| सर्वोत्तम वापर | Safety-critical HVAC & commercial | कमी किमतीची उपकरणे |
मोठ्या प्रमाणात आणि सुरक्षितता-गंभीर प्रणालींसाठी जिल्हा कूलिंग, हॉटेल्स आणि कोल्ड स्टोरेज, निवडा NDIR तंत्रज्ञान. घरगुती उपकरणे आणि कमी किमतीच्या उत्पादनांसाठी, एमओएस सेन्सर्स एक किफायतशीर पर्याय प्रदान करा.
जागतिक ग्राहक आम्हाला का निवडतात?
कंपनी सातत्याने “उत्तम कलाकुसर, वैज्ञानिक नवोपक्रम, उत्कृष्टतेचा पाठपुरावा आणि मूल्यवर्धित सेवा” या दर्जाच्या धोरणाचे पालन करते. उत्पादन प्रक्रिया नियंत्रण योजना आणि कामाच्या सूचना तयार करून, त्याने एक प्रमाणित, जबाबदार आणि नियमन केलेली प्रक्रिया व्यवस्थापन प्रणाली स्थापित केली आहे. याव्यतिरिक्त, कंपनीने स्वतंत्रपणे MES उत्पादन व्यवस्थापन प्रणाली विकसित केली आहे, ज्यामुळे संपूर्ण वर्कफ्लोमध्ये सर्वसमावेशक आणि दृश्य व्यवस्थापन सक्षम होते.
30+ वर्षांचा अनुभव
R&D, manufacture and sales of sensors and sensing solutions.
गुणवत्ता हमी सतत सुधारणा
पूर्ण आणि कठोर प्रक्रिया प्रवाह नियंत्रण, लक्षणीय सुधारणांसह.
आंतरराष्ट्रीय बाजार
100 पेक्षा जास्त देश आणि प्रदेशांना सेन्सिंग उत्पादने वितरित करा.
स्थिर पुरवठा साखळी विश्वसनीय उत्पादन
मुख्य घटक निर्बंधांच्या अधीन नाहीत, उत्पादन आणि चाचणीसाठी प्रगत उपकरणे.
R&D STRENGTH TECHNOLOGY INNOVATION
200+ patents, 180+ R&D team members, self-built labs for continous innovation.
एक स्टॉप सेवा
व्यावसायिक सल्लामसलत, जलद वितरण, 24 तास विक्रीनंतर समर्थन.
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.
सल्लामसलत करण्याची विनंती करा
FAQs — Refrigerant Leak Sensors & Detectors
How is an electronic leak sensor different from a handheld detector?
A fixed electronic sensor runs continuously and triggers alarms/interlocks automatically. Handheld detectors are used by technicians to locate small leaks during service.
Do I need ppm or %LEL?
Use ppm (NDIR) for early warning and comfort/process monitoring. Use %LEL (MOS/NDIR-LEL) to drive safety interlocks for A2L/A3 refrigerants. Many facilities deploy both tiers.
Where should I mount sensors?
Near likely leak sources (compressors, valves, joints) and low-lying accumulation points; most refrigerants are denser than air, so low mounting is typical.
What is the calibration interval?
12–24 months is common, with periodic bump tests based on environment and criticality.
Can Winsen customize for OEM programs?
Yes. We customize ranges, firmware, connectors, enclosures, and branding for volume deployments.
