diaphragm pressure gauge

[danlud]

A diaphragm pressure gauge employs four strain gauges to monitor the displacement of the diaphragm. A differential pressure applied to the diaphragm results in two of the gauges on one side of the diaphragm being subject to a tensile strain of 1.0 x 10-5 and the two on the other side a compressive strain of 1.0 x 10-5. The gauges have a gauge factor of 2.1 and resistance 120 Ω and are connected in the bridge with the gauges giving subject to the tensile strains in arms 1 and 3 and those subject to compressive strain in arms 2 and 4 (figure 1). If the supply voltage for the bridge is 10 V, what will be the voltage output from the bridge?

 

[geir__hk]

Dette er jo forsåvidt en enkel oppgave i to steg der du først skal beregne endelig motstandverdi på hver sensor og dernest beregne spenningsfall.