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A pressure sensor can measure pressure of both liquids and gases. Pressure is the force applied that is necessary to stop the expansion of fluids, and is given in force per area unit. Sensors are considered transducers and create an electrical signal as a function of pressure.

These transducers monitor and control several common applications. Among these are the flow of fluids and gasses, water levels, altitude, and speed. For this reason, they are also available in several forms, some of these better suited for some purposes than others. They can vary in their performance, design, and in what technology they contain. Their cost can also be highly variable.

There are some quite specialized sensors that are capable of capturing force changes at high speeds. These can measure the force of combustion of engine cylinders or several other devices. This type of sensor is commonly comprised of materials like quartz.

Sensors are grouped by the temperature ranges for their operation, the range of forces that can be measured, and the type of force measured. Just the grouping of type of force that is measured contains five different categories: vacuum, sealed, absolute, differential, and gauge.

The absolute linear position sensors type measures a force in terms of the force of a perfect vacuum. An example of such a measurement is the atmospheric force at sea level, measured by using the perfect vacuum as a reference. Gauge types may easily be calibrated to determine pressures in relation to the atmosphere at different locations. An example of this would be a tire gauge or data acquisition.

Vacuum models measure forces less than that of the atmosphere in any location. Differential types can measure differences that are given as inputs to sensing units. Differential sensors can determine any changes within oil filters and accurately determine the level and flow of various pressurized vessels. Sealed models are generally the same as the gauge versions. The important difference is they are typically calibrated beforehand by manufacturers so it measures using sea level as its reference.

Devices of these types are used in several machines, including submarines, aircraft, and cars. The measuring of force is crucial for functioning of aircraft, weather instruments, cars, and more. Accurately verifying altitude is necessary for rockets, aircraft, satellites, and weather balloons. In fact, the pressure sensors are capable of measuring altitude with a higher accuracy than devices with GPS.

They can also sense flow, like between two venturi tubes, when difference are very small. Depth measurements determine levels of submerging for submarines or divers. Sensors can also find the levels of fluids in water towers. Last but not least, they are capable of calculating the lost force caused by leaks.

The pressure sensor can measure forces on gases and liquids. These devices vary in use, design, and contained technology. For this reason they also differ in price. Some can capture high speed force changes and are used for analysis of engine cylinders. Others measure the altitude in a rocket and flow in tubing. They can even analyze the depth of a submarine, fluid levels in a water tower, and the consequences of leaks.

Choose from an expansive selection of state-of-the-art scientific technologies including the linear position sensor, pressure sensor, calibration systems, load cells, mass flow sensor, and accelerometer. These specialized tools are very popular among the research and development industries.