Hydraulic Pressure Gauge (Digital)
Upgrade from mechanical Bourdon gauges to a digital, robust, and remotely readable solution. Winsen’s industrial pressure transducers and transmitters cover hydraulic ranges up to 100 MPa with fast response and stainless-steel wetted parts. Pair the sensor with a panel indicator or PLC to display pressure locally and stream data to SCADA.
OEM/ODM • Private labeling • Flexible threads & connectors
- Up to 100 MPa hydraulic ranges (model-dependent)
- ≤1–4 ms fast response
- 4–20 mA / 0–10 V PLC & indicator ready
- SS316L / Ceramic rugged wetted materials
What is a Digital Hydraulic Pressure Gauge?
A digital hydraulic gauge uses an electronic pressure transducer/transmitter to convert fluid pressure into an electrical signal and a display value. Compared with mechanical gauges, it offers better accuracy, shock resistance, remote monitoring, and alarm capability. It also supports data logging and predictive maintenance.
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
| Hydraulic Equipment | Typical Range | Recommended Model | Preferred Output | Notes |
|---|---|---|---|---|
| Hydraulic power packs, manifolds | 0–25 MPa / 0–31.5 MPa | WPCK05 / WPCK07 | 4–20 mA | Best for long cable runs and noisy plants. |
| Presses, injection molding, die-casting | 0–40 MPa / 0–60 MPa | WPCK03 / WPCH04 | 4–20 mA or 0–10 V | Ceramic diaphragm helps with pulsation. |
| Mobile hydraulics (excavator, loader) | 0–40 MPa | WPCK07 | 4–20 mA | Choose rugged connectors and cable glands. |
| Test benches & calibration rigs | 0–10 / 0–25 MPa | WPCK62 | 0–10 V | Fast transient capture with <4 ms response. |
| OEM digital gauge platform | 6–60 MPa | WPAK66 (core) | Board-level | Add your own display & housing to brand a gauge. |
Thread options like G1/4, 1/4-NPT, M14×1.5 are available depending on model and region. Confirm exact part number at order.
Applications & Industries
Hydraulic Power Units (HPU)
Continuous monitoring on pump outlets and manifolds for alarms and trending.
- Typical range: 0–25 / 0–31.5 MPa
- Pick: WPCK05 / WPCK07 (4–20 mA)
- Tip: Add snubber to tame pump ripple
Presses & Stamping Lines
High-pressure lines with shock loads and pulsation.
- Typical range: 0–40 / 0–60 MPa
- Pick: WPCK03 or WPCH04
- Tip: Ceramic
Injection Molding & Die Casting
Fast transients during injection/holding phases.
- Typical range: 0–25 / 0–40 MPa
- Pick: WPCK07 (≤1 ms) / WPCK62 (<4 ms)
- Tip: Use short impulse lines for response
Mobile Hydraulics
Excavators, loaders, cranes—vibration & temperature swings.
- Typical range: 0–40 MPa
- Pick: WPCK07 + rugged connector (M12/Deutsch)
- Tip: Route cable away from actuators
Test Benches & Calibration Rigs
High repeatability and fast capture for transients.
- Typical range: 0–10 / 0–25 MPa
- Pick: WPCK62 (0–10 V)
- Tip: Pair with high-impedance DAQ input
OEM Digital Gauge Platforms
Build branded gauge heads with your display & housing.
- Typical range: 6–60 MPa
- Pick: WPAK66 sensor core
- Tip: Add your conditioning & logo panel
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.
Application Matrix
| Application | Typical FS Range | Recommended Model | Preferred Output | Notes |
|---|---|---|---|---|
| HPU / Manifold | 0–25 / 0–31.5 MPa | WPCK05, WPCK07 | 4–20 mA | Noise immunity for long cable runs |
| Press / Stamping | 0–40 / 0–60 MPa | WPCK03, WPCH04 | 4–20 mA or 0–10 V | Use snubber; verify overload/burst |
| Injection & Die Casting | 0–25 / 0–40 MPa | WPCK07, WPCK62 | 0–10 V (fast DAQ) or 4–20 mA | <4 ms response aids transient capture |
| Mobile Hydraulics | 0–40 MPa | WPCK07 | 4–20 mA | M12/Deutsch; strain-relieved pigtails |
| Bench & Calibration | 0–10 / 0–25 MPa | WPCK62 | 0–10 V | High-impedance input (>10 kΩ) |
| OEM Gauge Build | 6–60 MPa | WPAK66 (core) | Board-level | Add display, battery, enclosure |
Threads such as G1/4, 1/4-NPT, M14×1.5 are available per model. Confirm exact part number and labeling at order.
Integration & Wiring
Analog 4–20 mA (2-wire): Best EMC immunity and long-distance runs to PLC/indicator. Use 12–36 VDC loop power and keep loop impedance within sensor compliance.
Analog 0–10 V: Simple panel-meter/DAQ hookup; ensure high-impedance input (>10 kΩ) and a clean supply.
Ratiometric 0.5–4.5 V / Digital (I²C/SPI): Use for board-level or compact gauges where you control the electronics and display.
- Add snubbers or small orifice when heavy pulsation causes pointer jitter.
- For shock events, verify overload/burst ratings vs. peak spikes.
- Use shielded, grounded cables near servo drives and pumps.
Ordering & Bulk Purchasing
How to Specify
- Range & units (e.g., 0–25 MPa, 0–40 MPa, 0–60 MPa)
- Output (4–20 mA, 0–10 V, ratiometric, digital)
- Process thread (G1/4, 1/4-NPT, M14×1.5, etc.)
- Connector & cable (M12, DIN, Packard/Deutsch, pigtail)
- Environment (temperature, vibration, IP, shock/pulsation)
- Documentation (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 on request
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)
Digital gauge vs. mechanical gauge — which should I choose?
Choose digital if you need remote monitoring, alarms, logging, better vibration resistance or tighter accuracy; choose mechanical for very simple, no-power local indication.
How do I protect the sensor from pulsation and spikes?
Use a snubber/restrictor, flexible hose sections, and verify overload/burst ratings vs. your relief-valve setting and transient peaks.
Can I retrofit without changing pipework?
Yes — we offer common threads and adapters (G/NPT/metric). Provide photos or thread specs and we’ll choose a matching part number.
Do you provide calibration certificates?
Factory test reports are included for standard builds. Calibration certificates can be provided when required by your QA program.
More Refrigerant Sensors Knowledge
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.
READ MORE+