Water Pressure Sensor | Transducers & Transmitters for Pumps, RO & HVA
Winsen water pressure sensors measure gauge or absolute pressure in pumps, pipelines, RO/UF skids, boilers, and HVAC water loops. Choose rugged industrial transmitters with 4–20 mA / 0–10 V outputs, or OEM sensor cores for compact devices and smart meters.
OEM/ODM • Private labeling • Fast lead time
- 0–6 / 0–10 / 0–16 bar typical water ranges
- 4–20 mA / 0–10 V PLC & BMS ready
- SS316L / Ceramic robust wetted parts
- IP-rated field installation
Overview & Types
Water pressure sensors convert hydrostatic or line pressure into a calibrated electrical signal. For industrial water, the common 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 |
|---|---|---|---|---|
| Building water / booster sets | 0–10 / 0–16 bar | WPCK05 / WPCK07 | 4–20 mA | Snubber for water hammer; shielded cable for EMC. |
| RO/UF membrane racks | 0–6 / 0–10 bar | WPCK62 | 0–10 V or 4–20 mA | Compact for skids; monitor feed and concentrate lines. |
| Boilers / hot water circuits | 0–16 / 0–25 bar | WPCK03 | 4–20 mA | Select seals for temperature (FKM/PTFE); verify overload. |
| Filter status (ΔP across housing) | ±100…±300 kPa | WPAK67 ΔP | 4–20 mA / 0–10 V | Equal-length tubing; add air trap or drip loop. |
| Rough utilities / pulsating pumps | 0–10 / 0–16 bar | WPCH04 | 4–20 mA | Ceramic diaphragm tolerates ripple & particles. |
| OEM smart gauge/head | 0–10 / 0–16 bar | WPAK66 (core) | Board-level | Add your display, electronics, and enclosure. |
Threads: G1/4, G1/2, 1/4-NPT, 1/2-NPT and others. Seals: EPDM (potable), FKM (hot water), PTFE (chemicals) — choose per medium and temperature.
Applications & Industries
Municipal & Building Water
Booster sets, zones, risers and meter pits — stable monitoring and leak detection logic.
RO/UF & Process Skids
Feed/concentrate pressure, membrane ΔP and CIP verification for water treatment lines.
HVAC Water Loops
Chilled/hot water circuits, differential across coils, and pump protection.
Firefighting & Sprinklers
0–16 bar typical with alarm thresholds and event logging to the BMS.
Boilers & Heat Exchangers
Higher ranges and temperature-tolerant seals for steam-side auxiliaries and hot water.
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 & Installation
4–20 mA (2-wire): Best for long noisy runs to PLC/BMS. Use 12–36 VDC loop power and keep loop impedance within spec.
0–10 V: Simple to panel meters/DAQ; ensure high-impedance input (>10 kΩ) and clean supply.
Mechanical: Mount away from check/solenoid valves to reduce hammer; add a snubber; orient process port upward when possible to avoid air pockets.
- Confirm overload/burst vs. transient spikes.
- Select seal materials for temperature and chemistry.
- For ΔP tubing, use equal length and add drip loops/air traps.
Ordering & Bulk Purchasing
How to Specify
- Measurement & range (e.g., gauge 0–10/16 bar; ΔP ±200 kPa)
- Output (4–20 mA, 0–10 V, 0.5–4.5 V)
- Process thread (G1/4, G1/2, 1/4-NPT, 1/2-NPT, tri-clamp)
- Connector/cable (M12, DIN, Deutsch/Packard, pigtail)
- Medium & temperature (potable, RO, hot water, CIP/SIP)
- Docs (test report, calibration cert, labeling)
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 range should I choose for water systems?
0–6 bar for RO/UF, 0–10 bar for building water and HVAC loops, 0–16 bar for boosters/sprinklers, and up to 25 bar for boilers. Use compound ranges if slight vacuum occurs.
Which diaphragm and seals are best?
SS316L suits most water; ceramic improves tolerance to pulsation/solids. Choose EPDM for potable water, FKM for hot water, and PTFE for chemical compatibility.
How to mitigate water hammer?
Install a snubber/restrictor, place the sensor away from fast valves, and consider accumulators; verify overload and burst ratings.
Can I monitor filter fouling?
Yes. Use a differential pressure transducer across the filter housing to trend ΔP and plan cartridge changeouts.
Do you offer sanitary or flush-diaphragm builds?
Yes. We can customize tri-clamp and flush-mount process connections for food/pharma water with CIP/SIP.
What documentation can I get?
Standard test reports are included; calibration certificates and serialized labels are available per your QA program.
