PRESSURE DETECTION CIRCUITRY
Figure 10 shows a block diagram of a typical pressure detection circuit.
Figure 10 Typical Pressure Detection Block Diagram
The sensing element senses the pressure of the monitored system and converts the pressure to
a mechanical signal. The sensing element supplies the mechanical signal to a transducer, as
discussed above. The transducer converts the mechanical signal to an electrical signal that is
proportional to system pressure. If the mechanical signal from the sensing element is used
directly, a transducer is not required and therefore not used. The detector circuitry will amplify
and/or transmit this signal to the pressure indicator. The electrical signal generated by the
detection circuitry is proportional to system pressure. The exact operation of detector circuitry
depends upon the type of transducer used. The pressure indicator provides remote indication of
the system pressure being measured.