Air Pressure Sensor | Pneumatic & Compressor Transducers (0–16 bar) | Winsen
Winsen air pressure sensors cover gauge, absolute and differential measurements for compressed air systems, pneumatics, air compressors and HVAC. Choose rugged industrial transducers with 4–20 mA / 0–10 V outputs, or compact board-level sensors with 0.5–4.5 V/I²C for embedded designs.
OEM/ODM • Private labeling • Fast lead time
- 0–10 / 0–16 bar pneumatics & compressors
- −100…0 kPa vacuum gauge options
- ±25 Pa…±10 kPa duct static (ΔP)
- 4–20 mA / 0–10 V / 0.5–4.5 V easy PLC/DAQ integration
Overview & Types
Air pressure sensors convert pneumatic pressure into an electrical signal. In industrial automation and HVAC, the three common measurement modes are:
Pressure Sensor and Transmitter Comparison Overview
| Category | Model | Power Supply / Output | Detection Range | Accuracy / Nonlinearity | Pressure Reference | Operating Temperature | Shell Material | Remarks |
| Diffused Silicon Pressure Sensor | WPAK70 | 1.5mA / mV | -100kPa ~ 0 ~ 10kPa…10MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | High versatility, compact design |
| WPAK69 | 1.5mA / mV | -100kPa ~ 0 ~ 10kPa…10MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | Similar to WPAK70 | |
| WPAK68 | 1.5mA / mV | -100kPa ~ 0 ~ 10kPa…100MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | Extended range version | |
| WPAK67 | 1.5mA / mV | 0 ~ 10kPa…2.5MPa | ≤±0.3%FS | Differential Pressure | -40℃ ~ 120℃ | – | For differential applications | |
| WPAK66 | 1.5mA or 10V / mV | 6MPa…60MPa | ≤±0.3%FS | Sealed Gauge | -40℃ ~ 120℃ | – | Sealed design for higher ranges | |
| WPAK65 | 1.5mA or 10V / mV | -100kPa ~ 0 ~ 10kPa…16MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | General-purpose sensor | |
| WPAK64 | 1.5mA or 10V / mV | -100kPa ~ 0 ~ 10kPa…25MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | Moderate range coverage | |
| WPAK63J | 1.5mA / mV | -100kPa ~ 0 ~ 10kPa…100MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | J-type version for special mounting | |
| WPAK63 | 1.5mA or 10V / mV | -100kPa ~ 0 ~ 10kPa…100MPa | ≤±0.3%FS | Gauge / Absolute / Sealed Gauge | -40℃ ~ 120℃ | – | Versatile with wide range | |
| Ceramic Pressure Sensor | WPAH01 | 2–20V / mV | 0 ~ 200kPa…40MPa | ≤±0.3%FS | – | -40℃ ~ 125℃ | – | High chemical resistance |
| Plastic Sealed Pressure Sensor | WPAS12 | Digital and analog | 15–115kPa | – | – | -40℃ ~ 125℃ | – | Cost-effective, compact |
| WPAS02 | Digital and analog | 10kPa ~ 100kPa | – | – | -20℃ ~ 80℃ | – | Basic sensor for air/gas | |
| WPAS01 | Digital and analog | 10kPa ~ 100kPa | – | – | -40℃ ~ 125℃ | – | Robust high-temp tolerance | |
| Diffused Silicon Pressure Transmitter | WPCK81 | 4–20mA, RS485 | 0 ~ 1m…200mH₂O | ±0.5%FS / ±1%FS | Gauge Pressure | – | Stainless steel | For deep-level and tank level measurements |
| WPCK62 | 4–20mA (Optional) | 0 ~ 35kPa…25MPa | ±0.5%FS | Gauge / Absolute / Sealed Gauge | – | Stainless steel | Widely compatible, thread options | |
| WPCK08 | 4–20mA, RS485 | 0 ~ 200mH₂O | ±0.5%FS | Gauge Pressure | – | Stainless steel | Explosion-proof version | |
| WPCK07 | 4–20mA, 0.5–4.5V, 0–5V, 1–5V, 0–10V, 1–10V | -100kPa ~ 0 ~ 10kPa…100MPa | ±0.5%FS | Gauge / Absolute / Sealed Gauge | – | Stainless steel | Full-range output types | |
| WPCK05 | 0.5–4.5V, 0–5V, 1–5V, 0–10V, 1–10V | -100kPa ~ 0 ~ 10kPa…100MPa | ±0.5%FS | Gauge / Absolute / Sealed Gauge | – | Stainless steel | Voltage output options | |
| WPCK03 | I²C, 4–20mA, 0.5–4.5V and more | -100kPa ~ 0 ~ 10kPa…100MPa | ±0.2%FS, ±0.5%FS (custom) | Gauge / Absolute / Sealed Gauge | – | Stainless steel | Flexible signal types, high accuracy | |
| Ceramic Pressure Transmitter | WPCH04 | 0.5–4.5V (Customizable) | 0.2MPa…40MPa | 0.1%FS (Default) | – | – | Stainless steel | High precision ceramic core |
| WPCH01 | 4–20mA, 0/1–5/10V, 0.5–4.5V | 0.2–5MPa | 0.1% ~ 5.0%FS (Default 2.0%) | – | – | Stainless steel | Customizable, versatile outputs | |
| WPBH01 | Proportional voltage (0.5–4.5V) | 2–400 bar (Customizable) | 0.5%, 1%, 2% (Default), 3% | – | – | Stainless steel | Broad pressure range | |
| Glass Micro-Fusing Transmitter | WPCK89 | Digital and analog | 0 ~ 100 / 150 / 250 / 500 psig | ±1%FS | – | – | Stainless steel | Extremely robust and thermally stable |
Selection Guide
| Use Case | Recommended Range | Model | Preferred Output | Notes |
|---|---|---|---|---|
| Air compressor discharge / receiver tank | 0–10 / 0–16 bar (0–1.0/1.6 MPa) | WPCK05 / WPCK07 | 4–20 mA | Best EMC immunity for plant runs; add snubber for pulsation. |
| Pneumatic manifolds & actuators | 0–10 bar | WPCK62 | 0–10 V | Compact form for cabinets; fast step response. |
| Vacuum pick-and-place / leak check | −100…0 kPa gauge | WPCK07 | 4–20 mA | Verify overload vs. sudden atmosphere inrush. |
| HVAC duct static / filter status | ±50…±1000 Pa | WPAK67 ΔP | 0–10 V / I²C | Enable averaging to smooth turbulence. |
| Barometric reference / compensation | 300–1100 hPa abs | WPAS01 | 0.5–4.5 V | Calibrate at site altitude for best accuracy. |
| Rough utilities / pulsating lines | 0–10 / 0–16 bar | WPCH04 | 4–20 mA | Ceramic diaphragm tolerates moisture & ripple better. |
Threads: G1/4, 1/4-NPT, M14×1.5 and others. Electrical: M12, DIN 43650, Deutsch/Packard, or pigtail as required.
Applications & Industries
Air Compressors & Utilities
Receiver tanks, discharge lines, dryers and filters; alarms and energy management.
Pneumatic Automation
Valve manifolds, cylinder control, E-stop monitoring, machine tool pneumatics.
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.
Integration & Wiring
4–20 mA (2-wire): Best for long runs and noisy factories; 12–36 VDC loop power; check loop impedance.
0–10 V: Simple to panel meters/DAQ; ensure high-impedance input (>10 kΩ) and clean supply.
0.5–4.5 V / I²C (board-level): Stable 5 V supply, short leads, and good grounding practices.
- Add a snubber/restrictor for pulsating compressors.
- Use hydrophobic vents or drip loops to manage condensate.
- Shielded cables, grounded at one end, improve EMC.
Ordering & Bulk Purchasing
How to Specify
- Measurement type (gauge/absolute/differential)
- Range & units (e.g., 0–10 bar; −100…0 kPa; ±250 Pa)
- Output (4–20 mA, 0–10 V, 0.5–4.5 V, I²C)
- Process thread (G1/4, 1/4-NPT, M14×1.5, etc.)
- Connector & cable (M12, DIN, Deutsch/Packard, pigtail)
- Environment (temperature, vibration, moisture)
Program Terms
- Samples for validation and bench tests
- Tiered pricing for volume schedules
- Private labeling & custom packaging
- Rolling forecasts with safety stock options
Differential Pressure Sensor vs Transducer vs Transmitter
| Device | Output | Typical Use | Pros | Considerations |
|---|---|---|---|---|
| ΔP Sensor (board/compact) | Ratiometric / I²C / SPI | Embedded devices, instruments | Small, low-power, cost-effective | Requires host electronics and enclosure |
| ΔP Transducer | 0–10 V / 4–20 mA | PLC/DAQ measurement | Simple wiring, long cable runs | External display/relays not included |
| ΔP Transmitter | Conditioned + enclosure (often display/relays) | Field installation, panel mount | Rugged, installer-friendly | Largest size and highest cost |
Not sure which to choose? Share your controller model and mounting location—we’ll recommend the right package.
Frequently Asked Questions (FAQ)
What ranges do you recommend for compressed air and pneumatics?
Typical FS ranges: 0–10 or 0–16 bar for pressure lines; −100…0 kPa for vacuum. For duct static, use low-range differential sensors in Pascals.
Which output should I pick for a PLC?
4–20 mA for long/noisy plant runs; 0–10 V for short panel/DAQ wiring; 0.5–4.5 V or I²C for embedded devices.
Can the sensor handle moisture and oil in compressed air?
Yes—select SS316L or ceramic diaphragms; add snubbers/filters and follow moisture management practices.
Can one device measure both slight vacuum and pressure?
Yes—choose a compound gauge range (e.g., −100…+100 kPa) if your cycle crosses zero.
What threads and connectors are available?
G1/4, 1/4-NPT, M14×1.5, etc.; connectors include M12, DIN, Deutsch/Packard, or cable pigtail.
Do you provide calibration documentation?
We include test reports and can supply calibration certificates with serialized labels upon request.
