AC Refrigerant Sensor (Leak Detector) — Split/VRF • Central AC • Heat Pump
Winsen® electronic AC leak sensors provide continuous, fixed monitoring for air-conditioning refrigerants across residential and commercial buildings. We support A1 (R134a, R410A, R404A), A2L (R32, R454B, R1234yf/ze) and ए 3 (R290, R600a) gases. Choose आहे एन पीपीएम लवकर चेतावणीसाठी किंवा MOS/IR-LEL for %LEL safety interlocks—ready for BMS/PLC via 4-20 mA, RS-485 मोडबस, आणि relay outputs?
- A1 / A2L / A3 Coverage
- NDIR ppm & MOS %LEL
- OEM/ODM • मोठ्या प्रमाणात ऑर्डर
- जलद लीड वेळ
Pick by Refrigerant Class & Measurement
A1 (R410A / R134a) — NDIR PPM
- ठराविक श्रेणी: 0–1,000 / 0–5,000 ppm
- आउटपुट: 4-20 mA, RS-485 मोडबस, 1-2 रिले
- T90 ≤ 30 s • कमी प्रवाह, दीर्घ आयुष्य
A2L (R32 / R454B / R1234yf/ze) — NDIR PPM / %LEL
- PPM early warning and/or 0–100% LFL/LEL
- 4–20 mA / RS-485 / रिले
- VRF/VRV rooms & hotel guestrooms
A3 (R290 / R600a) — %LEL Safety
- Range: 0–100% LEL (IR-LEL or MOS)
- Relays for ventilation & shutdown interlocks
- IP options for plant/mechanical rooms
What is an AC Refrigerant Sensor?
An AC refrigerant sensor is a fixed, electronic detector installed near AC equipment to measure refrigerant concentration and automatically trigger alarms आणि interlocks (ventilation, unit shutdown). It complements handheld sniffers used by technicians for pinpoint leak search.
NDIR रेफ्रिजरंट सेन्सर
सेमीकंडक्टर रेफ्रिजरंट सेन्सर
Technology Options
| तंत्रज्ञान | साठी सर्वोत्तम | श्रेणी | फायदे | विचार |
|---|---|---|---|---|
| NDIR (इन्फ्रारेड) | A1 पीपीएम; A2L ppm/%LEL | ppm → %LEL | High selectivity & stability; not O₂-dependent; long life | Protect optics from condensation/dust (filters/enclosures) |
| एमओएस (सेमीकंडक्टर) | A2L/A3%LEL | 0-100% LEL | जलद प्रतिसाद; मजबूत किफायतशीर | Possible cross-sensitivities; periodic calibration advised |
| उत्प्रेरक मणी | सामान्य हायड्रोकार्बन्स (A3) | 0-100% LEL | Mature technology | O₂ आवश्यक आहे; सिलिकॉन/शिसेद्वारे विषबाधा होऊ शकते |
ठराविक अनुप्रयोग
Split/VRF indoor units & hotel rooms
Mount low (~150–300 mm above floor) near indoor units and pooling points. Pre-alarm → fresh-air purge; main alarm → fan/indoor-unit shutdown.
Central AC (AHU/MAU) & mechanical rooms
Place near coils, TXVs, service valves, and floor low spots/sumps; use IP-rated housings and BMS interlocks.
Line sets & evaporator/condenser sections
Monitor around brazed joints, manifolds; avoid strong supply streams that could bypass the sensor.
Heat pumps
For A2L systems, use %LFL tiers (≈25% pre-alarm; ≈50% main) to trigger ventilation and safe shutdown.
Core Specifications
| पॅरामीटर | मूल्य / पर्याय |
|---|---|
| मोजमाप | NDIR ppm and/or %LFL (MOS/IR-LEL) |
| आउटपुट | 4–20 mA (2/3-वायर), RS-485 Modbus RTU, 1–2 रिले (N.O./N.C.) |
| प्रतिसाद वेळ (टी 90) | ≤ 20-30 s ठराविक |
| Supply | 12-24 VDC (विनंतीनुसार इतर) |
| Operating Conditions | −20…+50 °C; 15–95% RH non-condensing (model-dependent) |
| Enclosures | Wall, panel, duct; housings up to IP65 |
| अनुपालन | CE & RoHS; designed for BMS/PLC integration |
Placement & Setpoints — Good Practice
- माउंटिंग उंची: Most AC refrigerants are heavier than air ⇒ mount low; verify with site airflow.
- कव्हरेज: ~5–10 m radius per sensor in open rooms; add units near valves/joints and low pockets.
- Alarms: A2L/A3: pre-alarm ≈25% LFL; main ≈50% LFL. A1: ppm bands (e.g., 1,000–5,000 ppm) per project spec.
- इंटरलॉक: Pre-alarm → ventilation; Main → equipment shutdown + beacons/horns/BMS event.
तुमच्या प्रोजेक्ट स्पेसिफिकेशन आणि स्थानिक कोड्सच्या विरूद्ध थ्रेशोल्ड आणि प्रमाण अंतिम 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.
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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 — Freon Gas Sensors
How many sensors are needed in a guestroom or office?
Plan ~5–10 m radius coverage per sensor in open rooms. Add units near indoor units, valves, joints, and floor-level pockets where gas can accumulate. Irregular layouts typically need more sensors.
Should I choose ppm or %LEL measurement?
Use ppm (NDIR) for early warning and comfort/process monitoring; use %LEL (MOS or IR-LEL) to drive safety interlocks for A2L/A3 systems. Many projects deploy both.
Where exactly should sensors be mounted?
Most AC refrigerants are denser than air; mount low (≈150–300 mm AFF) near likely leak sources and pooling points. Avoid strong supply air. Duct/return versions can monitor airflow.
How often do I need calibration and bump tests?
Typical calibration is every 12–24 months with periodic bump tests (quarterly/biannual). Dusty/humid or aerosol-rich sites may need more frequent checks and filter maintenance.
What causes false alarms or cross-sensitivity?
Solvents/aerosols (silicone sprays, alcohol cleaners, paints) can affect semiconductor elements; heavy condensation/dust can obstruct optics. Use IP-rated housings, splash/dust guards, and good placement.
Can Winsen customize for OEM/volume rollouts?
Yes—ranges, firmware/Modbus mapping, connectors/harnesses, housings (IP), labels/branding, and packaging are customizable for volume deployments.
