Sunday, June 12, 2011

Different Types And Functions Of The Pressure Sensor

By Adriana Noton


A pressure sensor measures pressure and is typically used on gases and liquids. Pressure is the force that is required to stop fluid expansion, and is normally described in force required per unit of area. These sensors are transducers and generate electrical signals as a function of pressure.

The transducers control and monitor several common applications. They measure fluid and gas flow, speed, altitude, and water level. Because of this, they also come in many forms, some better suited for certain applications than others. They may vary in their contained technology, their design, and their performance. They also vary substantially in cost.

There are specialized sensors that can capture high speed changes of force. These can be used to measure the combustion force of an engine cylinder and other devices. This sensor type is made 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 varieties can measure force in terms related to perfect vacuum force. For example, the measurement of atmospheric pressure for sea level, determined by using the perfect vacuum as a reference. Gauge varieties may be calibrated so they measure pressures relative to the atmosphere from any location. An example of one is a tire gauge and data acquisition.

Vacuum varieties measure force that is less than atmospheric in any location. Differential models measure differences provided as inputs to sensing units. These sensors can detect any drops across oil filters and measure flow and level in vessels that are pressurized. Sealed models are mostly the same as gauge ones. The main difference is they have been calibrated by a manufacturer so that measurements are in relation to sea level.

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.

A pressure sensor measures the forces of liquids and gases. They vary greatly in how they are used and in their design and technology. Because of this they also vary greatly in price. Some capture high speed changes in forces and are used in engine cylinders. Others measure altitude in rockets and flow within tubing. They are also capable of analyzing depth of submarines, fluid levels in water towers, and the effect of leaks on different devices.




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1 comment:

  1. Great explain!!! U providing a useful information, it is really appreciative. I'm also dealing same products like: Pressure Transmitters, Mass Flow Meters, Electromagnetic Flow Meters, Differential Pressure Transmitters, Temperature Controllers and all other industrial automation products.

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