Board Mount Pressure Sensors
A pressure sensor is a device, which is designed to test the specific pressure of a physical medium, usually a type of gas or liquid, but can also be a pressure applied by a direct contact between the sensor and solid object. These sensors have a range, which they function optimally, and outside of that range, i.e. higher pressures than are rated for, they can output incorrect signals or be physically damaged. They also are rated for a certain resolution, which describes the amount of pressure change that is required to have the output signal change to reflect it. With higher resolution, there is usually a sacrifice of range, and vice versa.
There are many methods to detect pressure. Some materials increase resistivity when there is a pressure, which deforms their structure. Others are piezoelectric, which means that an applied pressure creates a charge in the structure, which can be measured efficiently. In some sensors, a variable capacitance is measured which is caused by a strain on a built-in diaphragm.
Board mount sensors use SMD or through pin mounting techniques and are designed to be efficient and small. They can either measure pressure directly or have an adapter built-in to transfer pressure from an outside source. Read more Read less