LDi Catalog Printable PDF13

CATALOG PAGES BELOW

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

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.

Ultra stable circuits with gear pump. Typical packed plunger systems. Acceptable stabilities by various components and design purpose. Dosing and mixing system fluctuations. The horror of compressible liquids, high pressure, & pipe response to love volumetric efficiency. Triplex reciprocating plunger pump - analysis of motion, valve action mass oscillation, velocity jump, membrane response, and all and all. Centrifugal system startup surge wave, backflow bang, valve deceleration hammer. A Typical "power" pump / API 674 system design.

CATALOG PAGES in PDF
PUBLICATION 2
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Page 13 - Oscillograph pulsation "signatures" cover	PDF p13
Page 14 - Examples 1, 2, 3.	PDF p14
Page 15 - Examples 4, 5, 6.	PDF p15
Page 16 - Gear & Packed Plunger Sys., Accept. Max.	PDF p16
Page 17 - Dosing, Air Op. & "Metering" Sys., Accept. Max.	PDF p17
Page 18 - Plunger & Valve Motions	PDF p18
Page 19 - Multi Plunger & Centrifugal Systems	PDF p19
Page 20 - Synopsis, overview	PDF p20