[LDi] Liquid Dynamics International Liquid Dynamics International Inc. Click here to: Contact Liquid Dynamics Liquid Dynamics offers pulsation, vibration, and shock analysis, diagnostics, and software models. Fluid Flow Control Animations
Animations

INTERPRETING
OSCILLOGRAPHS
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6 examples

Gear & Packed Plunger Systems

Dosing, Air Op. &"Metering" Systems

Plunger & Valve Motions

Multi Plunger & Centrifugal Systems

Acceptable Maximums

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LDi Pulsation Analysis - target image Acceptable stabilities by various components and design purpose.

Before analyzing system pressure amplitude at frequency and causes, determine acceptable maximums. Below are suggestions.

Percentages are of theoretical steady state condition.

Maximums Maximums
Maximums

 

60% shaft deflection Spray blobs have atomization , 5% Constant streams in fully mixed out First in first out bad static mixing without continuous flow, 3.5% to 4% Bobbin in tapered transparent tube, 4% 6% set frquency pulsed magnetic field "Mag Meter" 3.0% paddle wheel meter Turbine meter, 1.5% Coriolis vibrating tubes meter, 1% “Delta P” orifice meter, 1 psi max Vortex shedding, .75% Spinnerette heads. 0.1% DQ Denier checked by laser beam precisely Film thickness control, 0.2% Web coating
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Pulsation Dampeners at Fluid Flow Control

Fluid Flow Control