[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
Pub 2 Main Menu


6 examples

Gear & Packed Plunger Systems

Dosing, Air Op. &"Metering" Systems

Plunger & Valve Motions

Multi Plunger & Centrifugal Systems

Acceptable Maximums

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From 30 years experience:
Reading oscillograph pulsation "signature", to identify the causes.
Recognizing normal activity, and deciding how smooth it needs to be.
Pulsation Analysis - Pressure Pulse Signatures

Graphics, interpreting pressure over time oscillograph traces,
to identify the sources of shock and pulsation.

1. Suction starvation time lag.
2. Foot valve oscillation.
3. Typical acoustic response, tells nothing more than the length of the supply pipe.
4. Channel "cavitation", from high velocity and 4:1 delta P.
5. Vortex frequencies - meter disturbance inaccuracy.
6. Normal pump start-up.



Pulsation Analysis, Diagnostics, Prediction by SoftwareCATALOG PAGES in PDF
PUBLICATION 2
Go to Entire Catalog


Page 13 - Oscillograph pulsation "signatures" cover
Page 14 - Examples 1, 2, 3.
Page 15 - Examples 4, 5, 6.
Page 16 - Gear & Packed Plunger Sys., Accept. Max.
Page 17 - Dosing, Air Op. & "Metering" Sys., Accept. Max.
Page 18 - Plunger & Valve Motions
Page 19 - Multi Plunger & Centrifugal Systems
Page 20 - Synopsis, overview

 

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Pulsation Dampeners at Fluid Flow Control

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