Because of this dependence on the excitation level, regulated power supplies are suggested for use with millivolt transducers. If the excitation fluctuates, the output will change also. The actual output is directly proportional to the pressure transducer input power or excitation. The output of the millivolt transducer is nominally around 30mV. Transducers with millivolt output are normally the most economical pressure transducers.
CHEAP ELECTRONIC FUEL INJECTION SYSTEM PPT HOW TO
In this article how to wire different types of pressure transducers based on its output is explained.Īfterwards, it is necessary to convert an electric output into an engineering unit such as PSI or bars.īelow is a summary of the outputs and when they are best used. Pressure transducers are generally available with three types of electrical output millivolt, amplified voltage and 4-20mA. The Electrical Output of Pressure Transducers The strain will produce an electrical resistance change proportional to the pressure. Pressure applied to the pressure transducer produces a deflection of the diaphragm which introduces strain to the gages. The conversion of pressure into an electrical signal is achieved by the physical deformation of strain gages which are bonded into the diaphragm of the pressure transducer and wired into a wheatstone bridge configuration.
Although there are various types of pressure transducers, one of the most common is the strain-gage base transducer. A pressure transducer, often called a pressure transmitter, is a transducer that converts pressure into an analog electrical signal.
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