Freon Gas Sensor (Freon Gas Detector) — Fixed Monitoring for HVAC/R
Winsen® 制造固定 Freon gas sensors for legacy “Freon” refrigerants (e.g., R12, R22*) and modern A1/A2L/A3 gases (R134a、R410A、R32、R454B、R1234yf/ze、R290、R600a). Choose 是n 用于 ppm 预警或 MOS/DIR for %LEL safety interlocks. Standard 4–20 Ma，，，， RS-485 总线， 和 继电器输出 streamline BMS/PLC integration.
- A1 / A2L / A3 覆盖范围
- NDIR ppm & MOS %LEL
- OEM/ODM • 批量订单
- 交货时间快
Model Guide — Select by Gas Family & Measurement
A1 HFC/HFO — NDIR PPM
- Ranges: 0–1,000 / 0–5,000 ppm (customizable)
- 输出：4–20 mA、RS-485 Modbus、1–2 个继电器
- T90 ≤ 30 s • 低漂移，长寿命
*R22/R12 are legacy service gases in many regions.
A2L Low-GWP — NDIR PPM / %LEL
- PPM 预警和/或 0–100% LFL/LEL
- 4–20 mA / RS-485 / 继电器
- Ideal for VRF/VRV rooms & heat pumps
A3 易燃 — %LEL 安全
- 范围：0–100% LEL（NDIR-LEL 或 MOS）
- Relays for ventilation & shutdown interlocks
- IP65 housings available
What “Freon” Means
In day-to-day language, people often say “弗莱恩” to mean any refrigerant. Technically, 氟利昂™ is a trademark historically used for certain CFC/HCFC/HFC products (e.g., R12/R22). On this page, “Freon gas sensor” refers broadly to electronic fixed sensors that detect refrigerant gas in HVAC/R spaces.
NDIR制冷剂传感器
半导体制冷剂传感器
技术选择
| 技术 | 最适合 | 范围 | 优势 | 注意事项 |
|---|---|---|---|---|
| NDIR（红外线） | A1 ppm； A2L ppm/%LEL | ppm → %LEL | 高选择性、低漂移、不依赖氧气 | 保护光学器件免受冷凝/灰尘影响（过滤器/外壳） |
| MOS（半导体） | A2L/A3%LEL | 0–100% LEL | 快速响应；强壮的;性价比高 | Possible cross-sensitivities; periodic calibration recommended |
| 催化珠 | 一般碳氢化合物 (A3) | 0–100% LEL | 技术成熟 | 需要氧气；可能会被硅树脂/铅中毒 |
典型应用
VRF/VRV indoor units & hotel rooms
安装在室内设备和汇集点附近的低处（距地面约 150-300 毫米）。预报警→新鲜空气吹扫；主报警→风机/室内机关闭。
Chiller & machinery rooms, compressor racks
Place near compressors, oil separators, valves, and floor low spots/sumps; use IP-rated housings and BMS interlocks.
Cold storage & refrigerated display cases
安装在箱体下方以及沿歧管/管路安装；选择防冷凝设计和窗帘/排气联锁装置。
数据中心行内/CRAC 单元
Position in return air, under raised floors, and near coils; ppm early warning protects uptime.
Heat pumps & general HVAC equipment
For A2L/A3, use %LFL tiers (~25% pre-alarm; ~50% main) to trigger ventilation and safe shutdown.
核心规格
| 范围 | 价值/选项 |
|---|---|
| 测量 | NDIR ppm 和/或 %LFL (MOS/NDIR-LEL) |
| 输出 | 4–20 mA（2/3 线）、RS-485 Modbus RTU、1–2 个继电器（常开/常闭） |
| 响应时间（T90） | ≤ 20–30 秒（典型值） |
| 供应 | 12–24 VDC（其他应要求提供） |
| 工作条件 | −20…+50°C； 15–95% 相对湿度，无冷凝（取决于型号） |
| 外壳 | 墙壁、面板、管道；外壳高达 IP65 |
| 遵守 | CE & RoHS; designed for BMS/PLC integration |
Placement & Setpoints — Good Practice
- 安装高度： Most refrigerants are heavier than air ⇒ mount low; confirm with on-site airflow.
- 覆盖范围： 开放房间中每个传感器的半径约为 5–10 m；在阀门/接头和低口袋附近添加单元。
- 警报： A2L/A3：预报警≈25%LFL；主要约 50% LFL。 A1：每个项目规范的 ppm 范围（例如 1,000–5,000 ppm）。
- 联锁： Pre-alarm → ventilation; Main → equipment shutdown + beacon/horn/BMS event.
根据您的项目规范和当地规范最终确定阈值和数量。
为什么全球客户选择我们？
该公司始终遵守“精通工艺，科学创新，追求卓越和增值服务”的质量政策。”通过制定生产过程控制计划和工作指导，它建立了标准化，负责和受监管的过程管理系统。此外，该公司独立开发了MES生产管理系统，从而在整个工作流程中实现了全面和视觉管理。
30多年的经验
R&D, manufacture and sales of sensors and sensing solutions.
质量保证持续改进
完整且刚性的流程控制，并取得重大改进。
国际市场
向100多个国家和地区提供传感产品。
稳定的供应链可靠生产
核心组件不受限制，用于制造和测试的高级设备。
R&D STRENGTH TECHNOLOGY INNOVATION
200+ patents, 180+ R&D team members, self-built labs for continous innovation.
一站式服务
专业咨询，快速交货，售后24小时。
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.
常见问题解答 — 氟利昂气体传感器
Is a Freon gas sensor the same as a refrigerant gas sensor?
In common usage, yes. “Freon” is often used generically for refrigerants. Our fixed electronic sensors detect the specified gas family regardless of branding.
我需要 ppm 或 %LEL 吗？
Use ppm (NDIR) for early-warning/comfort monitoring. Use %LEL (MOS or IR-LEL) to drive safety interlocks for A2L/A3 gases. Many facilities deploy both tiers.
How many sensors per room?
As a guideline, ~5–10 m radius coverage per sensor in open rooms. Add devices near valves, joints, and low pockets where gas can accumulate.
Calibration interval?
Typical: every 12–24 months with periodic bump tests. Dusty/humid or solvent-rich areas may need more frequent checks and filter maintenance.
Integration with BMS/PLC?
4–20 mA analog scaling (e.g., 4 mA = 0; 20 mA = full-scale), RS-485 Modbus RTU (address/baud configurable), and 1–2 relays for pre-alarm/main interlocks.
文森可以定制OEM方案吗？
Yes—ranges, firmware/Modbus mapping, connectors/harnesses, housings (IP rating), labels/branding, and packaging are customizable for volume deployments.
