ELECTRICAL PRESSURE TRANSDUCERS- DESIGN AND APPLICATION OF

Abstract

Thu dissertation deals dth the design of Tarlous types of eectrieal pressurw is $dW3erl (Resistivs,oapaottiv. inductive and to eloetric) above atospho r5.c pr+ ssur►ffi d the design of the associated electronic instrumentation system. Three types of elect4+rl prenre transducers (strain gaug.s +teative an4 . 'a' Vis) have bean 4eignd end d+velop d for measurement of very low s nd reszres (rap $ 0 to 10 ems, of tor) , A nisasuring instxwaent has also been developed for use tth the at v traneducors, 'The speci4 fiats of str4n gagotype Is use of four active strain gauges in the arias of the bridge circuit In pusb-**3i mode* These games are cemetted to see W+m beading stress, it is ' sI''wn tId.s method d es ecnsitivtt, Capacitive type is oemned tth stamen gauge type by timing tvo additional erode plates one on each side of the esas diaphragm on r*t ch the stern gds an cemented. ' The special features of LVDT type is develop of m*it*ture TAVD ` u lt, with niZl cotizpenhssting arrsngeant. AU three types of transducers ware eperim t4ly tested and found that the response ware .nom. Pertbrinanoe ofLTDT type as found to be better then the strain gauge and capacitive type transducers.