NURSING ANM AND GNM

Detailed explanation-1: -Explanation: Flow nozzle is the most economical device for the measurement of flow. Dall flow tube, Venturi and Pitot static tube are comparatively expensive.

Detailed explanation-2: -A flow meter (or a flow sensor) is an flow instrument that is used to indicate the amount of liquid, gas, or vapor moving through a pipe or conduit by measuring linear, non-linear, mass, or volumetric flow rates.

Detailed explanation-3: -When a flow nozzle is placed in a pipe carrying whose rate of flow is to be measured, the flow nozzle causes a pressure drop which varies with the flow rate. This pressure drop is measured using a differential pressure sensor and when calibrated this pressure becomes a measure of flow rate.