Product description

Inductive pressure sensors work on the principle that magnetic materials and permeability are different. When pressure is applied to the diaphragm, the size of the air gap changes and the change in the air gap affects the change in the inductance of the coil. The processing circuit can convert the change of inductance into the corresponding signal output, so as to achieve the purpose of measuring pressure. Pressure sensors can be divided into variable reluctance and variable permeability according to magnetic circuit changes. Inductance Pressure Sensor has the advantages of high sensitivity and large range. The disadvantage is that it cannot be used in high-frequency dynamic environments. The main components of variable reluctance pressure sensor are core and diaphragm. The air gap between them forms a magnetic circuit. When there is pressure, the size of the air gap changes, that is, the reluctance changes. If a voltage is applied to an iron core coil, the current will change as the air gap changes, thus measuring the pressure. When the magnetic flux density is high, the permeability of ferromagnetic material is unstable, and the pressure sensor with variable permeability can be used to measure it. The variable permeability pressure sensor uses a movable magnetic element instead of an iron core. The change in pressure causes the magnetic element to move, thus changing the permeability and obtaining the pressure value. Professional manufacturing engineering hydraulic sensor, high precision pressure sensor, Water Pressure Sensor, refrigerant Pressure Transmitter, air conditioning pressure transmitter, etc.