3 views
asked by
Draw and explain the operation of pressure transducer having diaphragm as a primary sensor and four strain gauges as secondary sensors.

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.

1 Answer

0 votes
answered by

Pressure measurement with strain gauges on diaphragm:

image

Description: This method uses the principle of converting pressure into a displacement by elastic elements which act as primary transducers. The displacement created is converted into an electrical parameter by secondary transducers. The figure above shows an arrangement of pressure measurement using four strain gauges mounted on a flat diaphragm. The gauges are electrically connected in a bridge circuit as shown in the figure. The diaphragm act as primary transducer and bonded strain gauges as secondary transducers. As pressure is applied, the diaphragm deflects causing radial and tangential stresses on the strain gauges. The stress cause strain on the gauges, changing the resistance of strain gauges. The change in resistances produce unbalance in the bridge circuit, producing an output voltage proportional to the applied pressure.

Welcome to Q&A site for electrical and electronics engineering discussion for diploma, B.E./B.Tech, M.E./M.Tech, & PhD study.
If you have a new question please ask in English.
If you want to help this community answer these questions.

...