Pressure transducers are devices which help to converting a pressure generated into an electric signal. Nowadays, manufacturers have come up with different types of pressure transducers and the most popular one is strain-gauge base transducer. This transducer is used in most industrial applications all around the world.
How do pressure transducers work?
The pressure is converted into an analogue electrical signal with the help of the physical deformation of the strain gauge. These gauges are connected to the diaphragm in the pressure transducer. They are also wired in a wheatstone bridge configuration.
The pressure which is applied on the machine and pressure transducer produces a deflection of the diaphragm. This helps to introduce strain on the gauge which is attached to the pressure transducer. This leads to the formation of an electric resistance change which is proportional to the pressure. Thus, the value of the pressure can be measure accordingly and the signal used appropriately.
Pressure transducers are available in three different types, amplified voltage, millivolt and 4-20mA. These categories are formed on the basis of the electric output of the transducer. Here is some information about millivolt output pressure transducers:
Millivolt output pressure transducers
Generally, the output of millivolt transducers is up to 30mV. In these devices, the output of the application is directly proportional to the input power or excitation of the pressure transducer. This means that if the excitation changes then the output will also change accordingly.
