PulseGuard
PulseGuard Ltd. and Inc.
PulseGuard Ltd. offers pulsation dampers | Please phone 44(0) 161-480-9625
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Fluid Flow Control Animations
Fluid Flow Control Animations

FLOW MEASUREMENT BY ORIFICE
AND PRESSURE DROP

Delta P Meter action picture
(Write this 1psi 0,07 Br. down for your use in your size calculation).

The exquisite method of volumetric flow velocity measurement, the "Delta P" meter, has no moving parts and where the differential pressure is from a solid state device and not a gauge, there is nothing simpler.
However, there is a prerequisite, STABLE FLOW AND NO PRESSURE PULSATION.

The orifice, in and of itself, helps to prevent downstream system response pulsation. Pressure excitation from an upstream source, for example a modulating flow control valve in a spill back loop, is reduced by flowing through the orifice into a larger diameter area, BUT this is not enough fluctuation reduction.

Even the vortexes from a local centrifugal pump, or its spin-up surge, a check valve "clacking" down stream, almost any disturbance, can cause a "dp" meter to give a false reading.

To ensure that momentary flow fluctuations, and pressure transients can not produce the wrong environment for "dp" meters, flow through interceptor damper types are required. In and out flow through prevents pressure fluctuation being caused by the need for flow reversal in then out of a single connection.

UNDERSTANDING FLOW OR PRESSURE PULSATION
WAYS TO GO

FUN fun way



Find Your Factor for your Pump System
GO TO find your factor for your pump system

 
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Selecting Pulsation Dampeners for Different Pump Systems.
Flow through pulsation dampers are at least 3 times more efficient than T off line accumulators.
Dampeners that do, flow goes through, but pressure pulsation does not.
PulseGuard Pulsation DampersThe Smooth Flow People

Call Toll Free 1-888-DAMPERS (326-7377) / See also: Pulsation-Dampeners.com for a pulsation dampener.


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