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    What is the Output from a Pressure Sensor with an Inbuilt Amplifier?

    The output from a pressure sensor with an inbuilt amplifier is normally independent of the supply voltage as it usually has its own onboard power supply regulator. However, there are some devices on the market that do not have this feature.

    For example a 1-6V output sensor will produce 1V output at zero pressure and 6V output at full scale pressure. This is the ideal curve in practice. However, there will also be a fixed null and span offset to consider. For example:

    Zero output is 1V ±0.2V

    Span output is 6V ±0.1V (this is an example only)

    In addition, you will need to add all the different accuracy and temperature effects, as detailed in the other Engineering Notes in this series.

    Graph showing the output from a pressure sensor with an inbuilt amplifier.

    In order to demonstrate the principle, the errors are exaggerated (see specific data for individual errors and sensors).

    Read more: Index to all of our Technical Notes on Pressure

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