Winsen supplies low-range differential pressure (ΔP) sensors engineered for HVAC, cleanrooms, filter monitoring, VAV boxes, fume hoods, and process diagnostics. Our MEMS piezoresistive and capacitive cores deliver stable, low-noise readings from ±25 Pa up to ±100 kPa with analog (4–20 mA, 0–10 V, 0.5–4.5 V) and digital (I²C/SPI) outputs.
OEM/ODM • 自有品牌 • 交貨時間短- ±25 Pa → ±100 kPa 雙向量程
- ±0.25%FS 典型值精度選項
- 0–10 V / 4–20 mA / I²C easy integration
- 零/跨度現場校準
Overview & Working Principle
A differential pressure sensor measures the pressure difference between two ports (High/Low). Winsen integrates a sensitive MEMS diaphragm, precision resistive/ASIC conditioning, and temperature compensation to output a linear signal proportional to ΔP. Bidirectional designs track positive and negative room pressure with the same device.
For air and non-condensing gases, barbed ports accept 4–6 mm tubing for fast installation. For liquid service, we provide isolated and corrosion-resistant interfaces. Choose ratiometric or I²C for embedded devices, or 4–20 mA/0–10 V for long cables and industrial PLCs.
壓力傳感器和發射器比較概述
| 類別 | 模型 | 電源 /輸出 | 檢測範圍 | 準確性 /非線性 | 壓力參考 | 工作溫度 | 外殼材料 | 評論 |
| 擴散的矽壓力傳感器 | WPAK70 | 1.5mA / mv | -100KPA〜0〜10KPA…10MPA | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 高多功能性，緊湊的設計 |
| WPAK69 | 1.5mA / mv | -100KPA〜0〜10KPA…10MPA | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 類似於WPAK70 | |
| WPAK68 | 1.5mA / mv | -100kpa〜0〜10kpa…100mpa | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 擴展範圍版本 | |
| WPAK67 | 1.5mA / mv | 0 〜10KPA…2.5MPA | ≤±0.3％fs | 差異 | -40 ℃〜120℃ | - | 用於差異應用 | |
| WPAK66 | 1.5mA或10V / mV | 6MPA…60MPA | ≤±0.3％fs | 密封量規 | -40 ℃〜120℃ | - | 較高範圍的密封設計 | |
| WPEK65 | 1.5mA或10V / mV | -100kpa〜0〜10KPA…16MPA | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 通用傳感器 | |
| WPAK64 | 1.5mA或10V / mV | -100KPA〜0〜10KPA…25MPA | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 中等範圍覆蓋率 | |
| wopak63j | 1.5mA / mv | -100kpa〜0〜10kpa…100mpa | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 特殊安裝的J型版本 | |
| WPAK63 | 1.5mA或10V / mV | -100kpa〜0〜10kpa…100mpa | ≤±0.3％fs | 儀表 /絕對 /密封量規 | -40 ℃〜120℃ | - | 多功能範圍很廣 | |
| 陶瓷壓力傳感器 | WPAH01 | 2–20V / mv | 0 〜200KPA…40MPA | ≤±0.3％fs | - | -40 ℃〜125℃ | - | 高化學耐藥性 |
| 塑料密封壓力傳感器 | WPAS12 | 數字和模擬 | 15–115kpa | - | - | -40 ℃〜125℃ | - | 成本效益，緊湊 |
| WPAS02 | 數字和模擬 | 10KPA〜100KPA | - | - | -20℃〜80℃ | - | 空氣/氣體的基本傳感器 | |
| WPAS01 | 數字和模擬 | 10KPA〜100KPA | - | - | -40 ℃〜125℃ | - | 強大的高溫公差 | |
| 擴散的矽壓力發射機 | WPCK81 | 4–20MA，RS485 | 0 〜1m…200mH₂o | ±0.5％fs /±1％fs | 儀表壓力 | - | 不銹鋼 | 對於深層和坦克水平的測量 |
| WPCK62 | 4–20mA（可選） | 0 〜35KPA ... 25MPA | ±0.5％fs | 儀表 /絕對 /密封量規 | - | 不銹鋼 | 廣泛兼容的線程選項 | |
| WPCK08 | 4–20MA，RS485 | 0 〜200mH₂o | ±0.5％fs | 儀表壓力 | - | 不銹鋼 | 防爆版本 | |
| WPCK07 | 4–20mA，0.5–4.5V，0–5V，1-5V，0–10V，1–10V | -100kpa〜0〜10kpa…100mpa | ±0.5％fs | 儀表 /絕對 /密封量規 | - | 不銹鋼 | 全範圍輸出類型 | |
| WPCK05 | 0.5–4.5V，0–5V，1-5V，0–10V，1–10V | -100kpa〜0〜10kpa…100mpa | ±0.5％fs | 儀表 /絕對 /密封量規 | - | 不銹鋼 | 電壓輸出選項 | |
| WPCK03 | I²C，4–20mA，0.5–4.5V及以上 | -100kpa〜0〜10kpa…100mpa | ±0.2％FS，±0.5％FS（習慣） | 儀表 /絕對 /密封量規 | - | 不銹鋼 | 靈活的信號類型，高精度 | |
| 陶瓷壓力發射機 | WPCH04 | 0.5–4.5V（可自定義） | 0.2MPA…40MPA | 0.1％FS（默認） | - | - | 不銹鋼 | 高精度陶瓷核心 |
| WPCH01 | 4–20mA，0/1–5/10V，0.5–4.5V | 0.2–5MPA | 0.1％〜5.0％FS（默認為2.0％） | - | - | 不銹鋼 | 可自定義的多功能輸出 | |
| WPBH01 | 比例電壓（0.5-4.5V） | 2–400 bar（可自定義） | 0.5％，1％，2％（默認），3％ | - | - | 不銹鋼 | 寬壓力範圍 | |
| 玻璃微配合發射器 | WPCK89 | 數字和模擬 | 0 〜100 / 150/250/500 psig | ±1％fs | - | - | 不銹鋼 | 極強和熱穩定 |
選型指南
Use the matrix below to choose the right ΔP sensor. Our team will finalize calibration after reviewing your environment and tubing layout.
| 用例 | 推薦範圍 | 媒體 | 首選輸出 | Ports & Connections | 筆記 |
|---|---|---|---|---|---|
| 潔淨室增壓 | ±25 to ±250 Pa | Air | 0–10V 或 I²C | 有倒刺 4–6 毫米； JST/莫仕 | Enable averaging filter to reduce door-opening spikes. |
| 過濾器狀態 (AHU) | ±250 Pa to ±2 kPa | Air | 4–20毫安 | 帶倒刺的端口； M12/DIN 通過線束 | Use 4–20 mA for long runs and noise immunity. |
| VAV & duct measurement | ±50 Pa to ±1 kPa | Air | 0.5–4.5 V ratiometric | 板級或緊湊型模塊 | Pair with a Pitot or flow element for airflow calculation. |
| 通風櫃面風速 | ±50 Pa to ±500 Pa | Air | 0–10V/I²C | Barbed ports; shielded cable | Enable offset auto-zero on power-up. |
| 工藝孔板/流量 | ±2 kPa to ±100 kPa | Gas/Liquid | 4–20毫安 | Isolated diaphragm adapters | Check liquid compatibility and maximum static pressure. |
Applications & Industries
HVAC & Building Controls
Room pressurization, isolation rooms, VAV, AHU filter status, stairwell pressurization, duct airflow.
Healthcare & Cleanrooms
Monitor positive/negative pressure differentials and air changes per hour for GMP environments.
Laboratory Safety
Fume hood face velocity control and sash interlocks using stable low-Pa sensors.
Process & Utilities
Orifice and filter ΔP in gas/liquid skids, blower monitoring, burner air control, leak detection.
Instruments & IoT
Portable analyzers, smart thermostats, and data loggers with low-power digital outputs.
Education & R&D
Wind tunnels, flow benches, and environmental test rigs requiring fast dynamic response.
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該公司始終遵守“精通工藝，科學創新，追求卓越和增值服務”的質量政策。 ”通過制定生產過程控制計劃和工作指導，它建立了標準化，負責和受監管的過程管理系統。此外，該公司獨立開發了MES生產管理系統，從而在整個工作流程中實現了全面和視覺管理。
30多年的經驗
R&D, manufacture and sales of sensors and sensing solutions.
質量保證持續改進
完整且剛性的流程控制，並取得重大改進。
國際市場
向100多個國家和地區提供傳感產品。
穩定的供應鏈可靠生產
核心組件不受限制，用於製造和測試的高級設備。
R&D STRENGTH TECHNOLOGY INNOVATION
200+ patents, 180+ R&D team members, self-built labs for continous innovation.
一站式服務
專業諮詢，快速交貨，售後24小時。
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.
主要規格
| 測量 | 雙向差分（高-低）或單向 |
|---|---|
| 範圍 | ±25 Pa → ±100 kPa; custom ranges on request |
| 輸出 | 4–20 mA (2-wire), 0–10 V / 0–5 V, 0.5–4.5 V ratiometric, I²C/SPI |
| 準確度（典型值） | ±0.25%FS (options; model & range dependent) |
| 穩定 | ±0.2%FS/yr typical |
| 響應時間 | 2–10 ms（數字濾波可配置） |
| Compensated Temp. | −10 to 85 °C (options wider) |
| 工作溫度 | −20 to 85 °C air; consult liquid models |
| 過載/爆裂 | 2× / 5× FS 典型值（每個型號） |
| 港口 | Barbed 4–6 mm, M5, 1/8-NPT, manifold or custom |
| 電氣 | JST/Molex, cable pigtail, M12 via harness, custom headers |
| 保護 | 極性接反；可選疏水過濾器；通過發射器的 IP 級外殼 |
Quality & Compliance
- 100% functional test and temperature compensation per specified span
- NIST-traceable calibration equipment; serialized labels for traceability
- Optional hydrophobic filters and splash guards for humid environments
- Datasheet and test report supplied with standard builds
Ordering & Bulk Purchasing
如何指定
- Range & units (e.g., ±50 Pa, ±500 Pa, ±2 kPa, ±100 kPa)
- Output (4–20 mA, 0–10 V, 0.5–4.5 V, I²C/SPI)
- Port style (barbed size, M5, 1/8-NPT, manifold)
- Connector (JST, Molex, cable pigtail, M12 via harness)
- Environment (temperature, humidity/condensation, vibration)
- Calibration (zero/span, multi-point, filter constants)
計劃條款
- DFM 和驗證樣品
- 批量計劃的分級定價
- 私人標籤和定制包裝
- 通過安全庫存期權進行滾動預測
差壓傳感器、傳感器、變送器
| 裝置 | 輸出 | 典型用途 | 優點 | 注意事項 |
|---|---|---|---|---|
| ΔP 傳感器（板式/緊湊型） | 比例式/I²C/SPI | 嵌入式設備、儀器 | 小型、低功耗、高性價比 | 需要主機電子設備和外殼 |
| 差壓傳感器 | 0–10V/4–20mA | PLC/DAQ測量 | 接線簡單，電纜長度長 | 不包括外部顯示器/繼電器 |
| 差壓變送器 | 調節+外殼（通常是顯示器/繼電器） | 現場安裝、面板安裝 | 堅固耐用，易於安裝 | 尺寸最大、成本最高 |
不確定該選擇哪個？分享您的控制器型號和安裝位置 - 我們將推薦合適的套件。
常見問題（常見問題解答）
How do I convert differential pressure to airflow?
Use a flow element (Pitot tube/orifice) with a K-factor. Airflow ≈ K × √(ΔP/ρ). We can provide guidance on K-factor selection and sensor range.
How do I avoid zero drift from tubing orientation?
Mount ports horizontally where possible, use equal-length tubing, enable warm-up, and perform a zero with both ports open to ambient.
Can I measure slightly humid air?
Yes—use a hydrophobic vent/filter and route tubing to minimize condensate. For condensing or liquid service, choose our isolated designs.
What is the recommended cable for long runs?
For analog outputs, use shielded twisted pair; ground the shield at one end. For I²C/SPI, keep leads short or use differential transceivers.
Do you supply matched pairs for redundancy?
Yes. We can provide matched sensors with correlated calibration data and common labels for critical applications.
更多製冷劑傳感器知識
Pressure Units: The Complete Guide (with Conversion Tables & Sensor Tips)
Learn the most common pressure units (Pa, kPa, MPa, bar, mbar, psi, atm, Torr/mmHg, inHg, inH₂O), when to use each one, and how to convert accurately using formulas, examples, and quick conversion tables—plus tips for specifying pressure sensors.
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