Deplete the water from measuring tank after the completion of the experiment.After the completion of experiment close the inlet valve and open all the gate valves & needle valves then close them.(vi) Regulate the gate valve and repeat the experiment. (v) Mark down the readings of manometer & time for 10cm rise in measuring tank. Nozzle and Venturi Flow Rate Meters - The orifice, nozzle and venturi flow rate meters use the Bernoulli Equation to calculate fluid flow rate using. (iv) Regulate the control valve put at the exit side of the Orifice to a necessary flow rate and preserve the flow. (iii) Needle valves of the equivalent manometer & Orifice meter are also opened (ii) The gate valve of the pipeline chosen for the experimentation is unlocked. (i) Shut the valves of inlet pipe, Orifice meter pipe line and manometer. H w – Head difference in the manometer, converted to cm of water. T – Time period to accumulate water for a height difference of h cm, measured in seconds. H – Height differences in piezo meter in cm. A differential manometer is joined at section 1 which is at a approximate space of about 1.5 to 2 times the pipe diameter upstream from the orifice plate, and at section 2, which is at a space of about half the diameter of the orifice on the downstream side from the orifice plate. The orifice diameter is approximately 0.5 times the diameter of the pipe. It incorporates a flat circular plate which consists a circular sharp edged hole known as orifice, which is concentric with pipe. It operates on the similar principle as a venturimeter. Orifice meter or orifice plate refers to the tool utilized for assessing the rate of flow of a fluid via a pipe. Measuring tank of size 0.6 * 0.6 * 0.8 with drain valve, scale arrangement. 2-3: Application Limits for Primary Flow Differential Pressure Products It is easily understandable that meters as thoroughly researched as differential pres-sure meters can satisfy many special requirements.(iii) To revise the deviations of Cd and release with regards to the head by maneuverings the subsequent graphs. AGA Report No. The calculation can also be rearranged to solve the differential pressure across an orifice plate or the bore diameter. (ii) To compute the coefficient of discharge (Cd) of the specified orifice meter for diverse rates of flow. This calculates the flow rate measured through an orifice plate metering system. (i) To standardize the Orifice meter device (by assessing the constants K and n, presumptuous the real discharge Qa = K*H hg n).