Experiment 2Investigating Bernoullis Theorem Objective: To observe the energy lesson and calculate the discharge venturi meter, orifice plate meter and rotameter.Introduction: The TecQuipment H10 Flow-easuring !pparatus is designed to familiari"e students with thetypical method of measuring the discharge of an essentially incompressible fluid, whilst givingapplicationsofthe#teady-Flow$nergy$%uationand&ernoulli's$%uation. Thedischargeisdeterminate using a venturimeter, an orifice plate meter and a rotameter. Head losses associatedwith each meter are determinate and compared as well as those arising in a rapid enlargementand a (0) elbow.Theunit is designedfor usewiththeTecQuipment H10or H1*Hydraulic&ench, whichprovides the necessary li%uid service and evaluation of flow rate.Description of pparatus:+ater from the Hydraulic &ench enter the e%uipment through a venturi meter, which consists ofgradually-converging section, followed by a throat, and a long gradually-diverging section. !fterachangeincross-sectioninflows throughanorificeplatemeter. This is manufacturedinaccordance with ,-, from a plate with a hole of reduced diameter through which the fluidsflows.Followingafurthersettlinglengthanda right-anglebend,theflowenter therotameter. Thisconsists of a transparent tube in which a float ta.es up an e%uilibrium position. The position ofthis float is a measure of the flow rate.!fter the rotameter the water returns via a control valve to the Hydraulic &ench, where the flowratecanbeevaluated. Thee%uipment hasninepressuretappings/! to01, eachofwhichisconnected to its own manometer for immediate read out.Installation and !reparation:+ith the air purge-valve closed, close the main valve fully then open it by appro2imately134.#witch on the bench and slowly open bench valve until water starts to flows. !llow the H10 tofill the water then open the bench fully, and then close the main valve. 5ouple the hand pump tothepurgevalveandpumpdownuntil all themanometerreadappro2imately-00--60mm.*islodge and entrapped air from the manometer by gentle tapping with the fingers. 5hec. thatthe water levels are constant. ! steady rise in levels will be seen if the purge valve is lea.ing.5hec.that thetubeferrulesandthetopmanifoldarefreefromwaterbloc.age, whichwillsuppress the manometer level. Ferrules bloc.age can be cleared by a sharp burst of pressure fromthe hand pump.Theor": 1p37g 8 -1V 8 1z 9 -p37g 8 gV--- 8 -z 8 :1-H+here;3 7g9 hydrostatic head-g