write the name of one pressure sensitive primary device
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Bourdon tube devices are commonly used as gauge pressure sensors and as differential sensors when two tubes are connected to a single pointer. Generally, the helical tube is more compact and offers a more reliable performance than the C-shaped sensing element.
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Pressure sensors are instruments or devices that translate the magnitude of the physical pressure that is being exerted on the sensor into an output signal that can be used to establish a quantitative value for the pressure. There are many different types of pressure sensors available, which function similarly but rely on different underlying technologies to make the translation between pressure and an output signal. This article will discuss the most common types of pressure sensors, describe the working principals of pressure sensors, review the common specifications associated with pressure sensors, and present examples of applications.
One difference to note is that pressure sensors are different from pressure gauges. Pressure gauges by their design provide a direct output reading of a pressure value referred to as gauge pressure. This can be in the form of an analog (mechanical) display using a needle and graduated scale, or via a direct digital display of the pressure reading. Pressure sensors, on the other hand, do not directly provide a readable output of pressure, but instead generate an output signal value which is proportional to the pressure reading, but which first needs to be conditioned and processed to convert the output signal level to a calibrated pressure reading