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Demystifying The Working Principle Of Pressure Sensor 1

May 06, 2019

Pressure sensor is the most commonly used sensor in industrial practice. It is widely used in various industrial self-control environments, involving water conservancy and hydropower, railway transportation, intelligent building, production automation, aerospace, military, petrochemical, oil well, electric power, ship, machine tool, pipelines and many other industries. And in different environments, different types of pressure sensors are needed to avoid errors. As a Gear Sensor Manufacturer, let's talk about how different pressure sensors work.

Linear Sensor

1. Piezoresistive force sensor: The resistance strain gauge is one of the main components of the piezoresistive strain sensor. The working principle of the metal resistance strain gauge is a phenomenon in which the strain resistance adsorbed on the base material changes with the mechanical deformation, which is commonly called the resistance strain effect.

2. Ceramic pressure sensor: ceramic pressure sensor based on piezoresistive effect, pressure directly on the front surface of the ceramic diaphragm, so that the diaphragm produces a small deformation, thick film resistor printed on the back of the ceramic diaphragm, connected into a Wheatstone The bridge, due to the piezoresistive effect of the varistor, causes the bridge to generate a highly linear voltage signal proportional to the pressure, which is proportional to the excitation voltage. The standard signal is calibrated according to the pressure range and can be compared with the strain sensor. compatible.

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