Laminar Flow Element Flow Meters
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Laminar Flow Element Flow Meters How Laminar Flow Element Flow Meters Work Differential pressure flow meters use Bernoulli's equation to measure the flow of fluid in a pipe. Differential pressure flow meters introduce a constriction in the pipe that creates a pressure drop. When the flow increases, more pressure drop is created. Bernoulli’s equation states that the pressure drop across the constriction is proportional to the square of the flow rate. Laminar flow elements, however, present a special case wherein the fluids are in a laminar regime (low Reynolds number) and the pressure drop is linear in relation to the flow rate. That makes very useful for reading the low end of the scale and increases the “turn down” from the usual 10:1 to 100:1. This technology is optimal for clean gas flows. The flow is calculated by measuring differential pressure and making corrections with data from temperature and absolute pressure sensors. How to Use Differential Pressure Flow Meters Application Cautions for Laminar Flow Element Flow Meters |