Pressure Sensors: Specific Features
A pressure sensor measures the pressure, generally gas or liquid pressure. Pressure is the expression of the force which may be required to stop a fluid from expanding. A pressure sensor detects a signal coming from an imposed pressure. The signal is typically electrical, but it may also be optical, visual and auditory.
Pressure sensors are used to control and monitor a lot of everyday applications. As their usage is so widespread, there are several companies that manufacture them. According to some estimates there may be over 50 technologies and at least 300 companies making them.
According to Paine Electronics, pressure sensors must have the following features:
- High operating temperature ranges.
- Repeatability – Transducer output for a given input condition should be the same each time the conditions are applied under pressure and during extreme temperature cycling.
- Stability – Transducer output should not change under constant pressure and temperature cycles.
- Mechanical Shock and Vibration – The transducer should see only minimal error during long-term operation.
- Resistance to corrosive environment of gases and liquids.
There are some pressure sensors designed to measure in a dynamic mode, capturing very high-speed changes in pressure. For instance, this kind of sensor could be used in measuring combustion pressure in an engine cylinder or in a gas turbine. There are also pressure sensors, mainly used in speed cameras, which function in a binary manner. That is to say, when pressure is applied to a pressure sensor, the sensor acts to complete or break an electrical circuit. These types of sensors are also known as pressure switches.
If your work is somehow connected with underwater vehicles, your tasks may also require the use of a current transmitter. Make sure that you are choosing the most qualified products from reliable services, because if you are thrifty when making your purchasing decision, you’ll probably have to spend much more to repair the damage that can incur.
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