Pressure Sensor Module
Unlock advanced monitoring capabilities with our Pressure Sensor Modules. These compact and versatile modules integrate seamlessly into existing systems, providing comprehensive pressure data for analysis and control. With easy installation and compatibility with various interfaces, our Pressure Sensor Modules empower you to optimize processes and enhance efficiency effortlessly.
What Is a Pressure Sensor?
Pressure Sensor Definition & Working Principle
A pressure sensor is an electronic device that converts physical pressure – from a gas, liquid, or steam – into a proportional electrical signal.
Inside most industrial pressure sensors, a sensing element (piezoresistive silicon chip, ceramic cell, or metal strain gauge) deforms under pressure. That deformation changes electrical resistance or capacitance. An onboard circuit amplifies and linearizes the change into a standard output like 4‑20 mA, 0‑10 V, or a digital protocol (I²C, RS485).
You connect it to a controller, data logger, or display, and instantly get a live, repeatable pressure reading for automation, alarming, or historical trending.
Gauge Pressure vs Absolute vs Differential Pressure
Just like mechanical gauges, pressure sensors measure in three different ways – but here the result is an electronic signal.
Gauge pressure sensors measure relative to ambient atmosphere (zero when open to air). Ideal for tanks, pipes, pumps, and most industrial processes.
Absolute pressure sensors use a sealed vacuum reference. Essential for barometric correction, vacuum systems, and altitude measurement.
Differential pressure sensors measure the difference between two ports. Perfect for filter monitoring, flow measurement, and liquid level in closed tanks.
Types of Pressure Sensors We Offer
Our pressure sensor portfolio covers multiple technologies. Here we keep it simple so you can match the right sensor to your media, environment, and accuracy requirement.
HP10 Silicon Piezoresistive Pressure Core (OEM Module)
These 19 mm OEM pressure cores are based on diffused silicon piezoresistive technology with 316L stainless steel isolation diaphragm and silicone oil filling. HP10 offers constant current or constant voltage excitation;
Best when you need:
A compact, standardized core (Φ19 mm) for building your own transmitter.
Gauge, absolute, or sealed gauge from 10 kPa up to 100 MPa.
mV output with excellent repeatability and hysteresis.
HP15M Integrated Pressure Transmitter (4‑20 mA Output)
The HP15M is a complete, oil‑filled pressure transmitter with built‑in signal conditioning. It directly outputs a standard 4‑20 mA loop‑powered signal. Wide temperature compensation (-20 ℃ to +80 ℃) and high accuracy up to ±0.25% FS.
Best when you need:
A ready‑to‑use, two‑wire 4‑20 mA transmitter for direct PLC connection.
All stainless steel 316L wetted parts, suitable for most fluids.
Simple installation with standard Φ19 mm size and O‑ring sealing.
Quick Comparison
| Sensor Series | Technology | Pressure range | Output | Media compatibility | Best for |
|---|---|---|---|---|---|
| HP10 | Silicon piezoresistive | 10 kPa ~ 100 MPa | mV (OEM core) | Compatible with 316L | Compact OEM core, wide range |
| HP15M | Silicon + amplifier | 50 kPa ~ 10 MPa | 4‑20 mA (2‑wire) | General fluids | Ready‑to‑use transmitter |
Pressure Sensor Applications by Industry
Pressure sensors appear everywhere – from chemical reactors to HVAC systems. Here we focus on two demanding areas where reliable measurement protects people and equipment.
Chemical, Oil & Gas – Corrosive and High‑Pressure Environments
In chemical plants and refineries, the sensor must survive aggressive media (acids, alkalis, salt spray) and high overpressure spikes. Our HCPS18D ceramic sensor (dry, no oil) or HS‑CPS with Hastelloy diaphragm are ideal choices.
Typical uses:
Reactor pressure monitoring.
Pipeline differential pressure for filter clog detection.
Tank level measurement in closed vessels.
Food, Pharmaceutical & Sanitary Pressure Sensing
Sanitary applications demand flush diaphragms, FDA‑compliant materials, and resistance to CIP/SIP cycles. The HCPS18D with its ultra‑pure ceramic and FDA‑grade O‑rings is a perfect fit – no oil filling means no contamination risk.
Where they are used:
Bioreactor and fermenter pressure.
Filling machine line pressure.
High‑purity water loop monitoring.
Hydraulic & Pneumatic Systems
Hydraulic power units and pneumatic lines need rugged sensors that handle pressure spikes and vibration. Our HP15M transmitter and HP10/HP12M cores are built with all‑stainless steel construction and proof pressures up to 150% FS.
Typical uses:
Pump discharge pressure.
Accumulator and regulator output.
Mobile equipment hydraulics.
How to Choose the Right Pressure Sensor?
Choosing a pressure sensor is about matching three things: pressure range, output signal, and wetted materials.
Selecting Pressure Range, Output & Accuracy
Never size a sensor so your normal operating pressure sits at the top of the range. For best accuracy and longevity, keep the working pressure between 30% and 80% of full scale.
Output options:
Raw mV (0‑100 mV, 60‑140 mV) : For OEMs with own signal conditioning – lowest cost, highest flexibility.
4‑20 mA loop‑powered: Best for long cable runs and noisy industrial environments.
0‑10 V: Fine for short runs inside a control cabinet.
Digital (SPI, I²C, UART) : Direct microcontroller connection, no calibration curve needed.
Quick guide: range and accuracy
| Application type | Typical range choice | Suggested accuracy |
|---|---|---|
| General monitoring | Working pressure ≤ 80% of full scale | ±0.5% ~ ±1.0% FS |
| Hydraulic / high dynamic | Working pressure ≤ 50% of full scale | ±0.5% FS |
| Precision / Test | Narrow range around operating point | ±0.1% ~ ±0.25% FS |
| OEM / high volume | Depends on design | ±0.5% ~ ±1.5% FS (low cost) |
Media Compatibility & Materials
The wetted material must survive your media.
Clean gas / water: 316L stainless steel (most of our sensors).
Corrosive chemicals: Hastelloy C (HS‑CPS option) or 96% Al₂O₃ ceramic (HCPS18D, HP33, HP600).
Dirty or viscous media: Flush diaphragm designs or remote seals available.
Process Connections & Electrical Interface
We support common threads: NPT, BSP, G‑thread, M20×1.5, G1/2, M27×2, M45×1.5, and custom. Electrical connections include cable output, M12 connector, or gold‑plated pins for PCB mounting.
Pressure Sensor FAQs
1. What is the difference between a pressure sensor and a pressure transmitter?
A pressure sensor typically provides a raw, unamplified mV signal. A pressure transmitter has built‑in amplification and converts the signal to a standard industrial output like 4‑20 mA or 0‑10 V. For direct PLC connection, choose a transmitter (e.g., HP15M). For OEM integration, choose a sensor core (e.g., HS‑CPS, HP10).
2. How often should a pressure sensor be recalibrated?
General industrial use: every 12 months. Critical processes: every 6 months. Our high‑end sensors (HS‑CPS, HCPS18D) offer long‑term drift ≤±0.05% ~ 0.1%/year, allowing extended intervals with verification.
3. Can I use a gauge pressure sensor for liquid level in a closed tank?
Only if the tank is vented. For a sealed tank, use a differential pressure sensor or an absolute sensor with vapor space compensation.
4. What output should I choose for a long cable run (over 50 meters)?
Always choose 4‑20 mA loop‑powered. It is immune to voltage drop. 0‑10 V signals degrade significantly over long distances in industrial environments.
5. Which sensor is best for highly corrosive media (acids, solvents)?
For maximum corrosion resistance, choose a ceramic sensor – either the HCPS18D (capacitive, dry) or HP33/HP600 (piezoresistive, thick‑film). Ceramic Al₂O₃ resists almost all chemicals. Alternatively, the HS‑CPS with Hastelloy C diaphragm is also an excellent choice.
6. Do I need a dry or oil‑filled sensor?
Oil‑filled (HS‑CPS, HP10/12/15) – provides damping, protects against moisture, and handles high pressure. Great for general industrial use.
Dry / ceramic (HCPS18D, HP33/HP600) – no oil means no contamination risk, ideal for food, pharma, and oxygen service. Also excellent for corrosive media.
Why Choose Our Pressure Sensors?
We build pressure sensors from the ground up, using proven technologies – from MEMS monocrystalline silicon to advanced ceramic capacitive cells. Every sensor is designed for real‑world conditions, not just a lab bench.
Reliable Industrial‑Grade Design
Fully welded or compact OEM construction.
Wide temperature compensation (-40 ℃ to +125 ℃).
High overpressure and burst ratings.
Long‑term stability as low as ±0.05% FS/year.
What you get:
Stable readings over the full product lifecycle.
Material options for water, steam, oil, gas, and aggressive chemicals.
Standardised footprints (e.g., Φ19 mm) for easy drop‑in replacement.
Fast Support, Customization & Global Service
We understand your system is unique. Our team helps you size the range, pick the output, and choose the process connection that fits your exact job.
Service advantages:
Fast response on sizing questions and cross‑reference of existing part numbers.
Support for OEM and project orders, from samples to large‑volume runs.
After‑sales support, including selection tweaks when your process changes.
