Item Description

Orifice is a simple device used to measure fluid flow rate in pipes. The flow rate is obtained by measuring the pressure loss across the calibrated orifice. Calibration of the orifice plate consists of determining the co-efficient of discharge which is the ratio of the measured actual discharge through the orifice to the theoretical discharge obtained from calculations. Study of the trajectory profiles of water jets issuing from the orifice and comparison with the calculated profile shapes is an interesting exercise to the student of hydraulics and fluid mechanics.

Orifice is a simple device used to measure fluid flow rate in pipes. The flow rate is obtained by measuring the pressure loss across the calibrated orifice. Calibration of the orifice plate consists of determining the co-efficient of discharge which is the ratio of the measured actual discharge through the orifice to the theoretical discharge obtained from calculations. Study of the trajectory profiles of water jets issuing from the orifice and comparison with the calculated profile shapes is an interesting exercise to the student of hydraulics and fluid mechanics.

Sci-tech Orifice and Free Jet Flow Apparatus Model FM 17 has been designed to enable students to determine the co-efficient of discharge of sharp edged orifice and to study the trajectory profiles of water jets issuing from the orifice. It consists of a vertically mounted constant head transparent water tank. Water is supplied from the hydraulic bench or any closed circuit controlled water supply system. The orifice is installed with the axis horizontal on the wall at the base of the tank using special fittings flush with the inside surface. The head above the orifice is maintained constant using adjustable overflow pipe and the level is indicated by the level scale. The flow rate through the orifice can be varied by adjusting the level of the overflow pipe suitably and hence the head over the orifice. Water emerging from the orifice is collected in the measuring tank of the hydraulic bench to make actual discharge measurements. A jet trajectory tracing device with a plotting board and a number of depth gauge pins enables to plot the jet trajectory directly on the graph paper.

The equipment is designed to fit into the FM100 Hydraulic Bench or any other standard hydraulic bench models.

Adjustable feet are provided to permit accurate leveling of the equipment before use. The complete unit is manufactured from corrosion resistant materials.