
Pressure sensors, also known as pressure transducers, pressure transmitters, pressure senders, pressure indicators, piezometers, and manometers, are devices designed to measure the pressure of gases or fluids. They convert the applied pressure into an electrical signal that quantifies the force exerted. These devices are critical in various settings, capable of providing accurate pressure readings in units such as pascals (Pa), bars, atmospheres (atm), or pounds per square inch (psi).

## **Types of Force Collectors**

To meet the varied demands of these applications—from delicate medical instruments to robust industrial machinery—pressure sensors utilise a variety of measurement technologies. Each technology offers unique benefits in terms of sensitivity, range, resistance to environmental factors, and compatibility with different types of media. 

Understanding these technologies helps in selecting the right pressure sensor for specific tasks, ensuring reliability, accuracy, and efficiency in their operation. 

- Resistive Sensors - Utilise the change in electrical resistance of a strain gauge attached to a diaphragm to measure pressure.
- Capacitive Sensors - Known for their high sensitivity, these are effective for measuring pressures below 10 bar and can endure significant overloads.
- Piezoelectric Sensors - Employ materials like quartz that generate an electrical charge when pressure is applied, ideal for detecting rapid pressure changes.
- Optical Sensors - Use optical fibre interferometry, offering immunity to electromagnetic interference, suitable for noisy or sensitive environments like medical facilities.
- MEMS (Micro-Electro-Mechanical Systems): – These pressure sensors contain capacitive or piezo pressure sensing mechanisms on silicon at micron level resolution.

## **Types of Pressure Sensors**

There are various properties used to classify sensors and their appropriate applications. These include the pressure range they measure, their operating temperature range, and the type of pressure they are designed to detect.

### **Absolute Pressure Sensors**

This type of sensor measures pressure relative to the perfect vacuum (zero reference point).

### **Gauge Pressure Sensors**

These are often used to measure atmospheric pressure and are sometimes referred to as relative pressure sensors.

### **Sealed Gauge Pressure Sensors**

Similar to gauge pressure sensors except they measure pressure relative to a fixed pressure, not the current ambient atmospheric pressure which can vary.

### **Differential Pressure Sensors**

These can be used to measure the difference between two different pressures (differential pressure) which can be connected to either side of the sensor. They are often used to measure pressure drops, fluid levels and flow rates.

## **Pressure Sensor Applications**

Pressure sensors are used in a wide variety of applications across many industries. Here are some key applications:

### **Manufacturing**

In manufacturing, pressure sensors provide precise control and monitoring of hydraulic and pneumatic systems. Essential in CNC machines and industrial robots, they ensure accurate and efficient production operations.

### **Mining**

Advanced pressure sensors are revolutionising mine safety and operational efficiency, as detailed in our comprehensive article on how [pressure sensors are transforming mine safety](https://au.rs-online.com/web/content/discovery/ideas-and-advice/how-advanced-pressure-sensors-are-transforming-mine-safety-and-operational-efficiency). These sensors help monitor atmospheric conditions and manage systems to prevent hazardous incidents.

### **Aerospace**

In aerospace, these sensors are crucial for measuring altitude and airspeed, managing cabin pressurisation, and controlling munitions. Their reliability is vital for both safety and functionality in extreme conditions.

### **Oil and Gas**

Pressure sensors are integral to the oil and gas industry, monitoring and controlling exploration, production, and distribution processes. They are key to ensuring operational safety and preventing failures.

### **Pharmaceuticals and Biotechnology**

In the realms of pharmaceuticals and biotechnology, pressure sensors ensure the precision necessary for accurate dosing, effective filtration, and controlled fermentation processes, all crucial for product quality and safety.

### **Environmental Monitoring**

These sensors are employed in weather forecasting, flood prediction, and water level monitoring, providing data essential for environmental protection and disaster preparedness.

### **Food and Beverage Production**

Pressure sensors help maintain consistent pressures during processing stages in food and beverage production, safeguarding product consistency and safety.

### **Medical Devices**

In healthcare, pressure sensors are vital in devices such as ventilators, blood pressure monitors, and infusion pumps, enhancing patient care and treatment accuracy.

## **How to Order Pressure Sensors From RS?**

[RS](https://au.rs-online.com/web/) is a trusted supplier and distributor of high-quality pressure sensors from leading brands such as [RS PRO](https://au.rs-online.com/web/c/automation-control-gear/sensors/pressure-sensors/?applied-dimensions=4291780588), [Amphenol Advanced Sensors](https://au.rs-online.com/web/c/automation-control-gear/sensors/pressure-sensors/?applied-dimensions=4291375106), [Gems Sensors](https://au.rs-online.com/web/c/automation-control-gear/sensors/pressure-sensors/?applied-dimensions=4294966513), [Sick](https://au.rs-online.com/web/c/automation-control-gear/sensors/pressure-sensors/?applied-dimensions=4294965547), [Telemecanique Sensors](https://au.rs-online.com/web/c/automation-control-gear/sensors/pressure-sensors/?applied-dimensions=4292218344), and [WIKA](https://au.rs-online.com/web/c/automation-control-gear/sensors/pressure-sensors/?applied-dimensions=4294965243). Business account customers enjoy free delivery on all orders over $40 (excluding GST), while a delivery fee of $10 is applied to orders under this amount. For private accounts and guest customers, delivery is complimentary for orders over $80 (excluding GST), with a $12.95 fee for smaller orders.

## **Delivery Information for Australia**

To ensure prompt delivery, please place your orders by 5 pm AEST from Monday to Friday. Next working day delivery is available for items stocked locally, although some regional areas may experience extended delivery times. 

For a comprehensive overview of all our delivery services, including special options like same-day delivery and consolidated shipments, please visit our [delivery information](https://au.rs-online.com/web/content/support/all-articles/delivery) page.



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