Artisi:
Entrained air a very real possibility, I will endeavour to mash together some trials where we keep well away from
tank low levels currently experienced.
Thankyou & all others for chipping in, must say this has be a humbling experience. Kind regards
Artisi:
I understand your point of view, I had not accounted for atmospheric pressure, thanks for educating me
I shall endeavour to re-consider some aspects as soon as possible
Cheers
Artisi:
Pump centre situated slightly lower (0.45m) than tank outlet, pressure drop through valves/bends/piping calculated to be 0.35m
I don't understand where you get 8-9 metres of line losses from, if I have steered you wrong I am sorry, certainly not intent
Please consider that not everybody...
QualityTime:
I have yet to put my complete case to them, the years have gone by with very little analytical assessment of the situation
I am trying to paint a picture to them so they can help us to get past this, sometimes people don't like reversing their prospective
It is a very strange...
LittleInch:
Head pressure is consumed through the process line, the pump in question is controlled by a pressure at the end of line to 2.0 bar
Process feed pressure from pump is 8.0 bar at start, 10.0 bar at end of run, fouling/friction consumes the pressure
Start of run output 65% @ 30.0 amps...
Littleinch:
Pump outlet pressure operating at start of run (8.0 bar) progressing to (10.0 bar) at end of run due to fouling
The minimum operating pressure (2.0 bar) I mentioned is at the very end of a lengthy processing line
No flow does not fluctuate as mentioned several times, flow is fixed at...
More feedback:
QualityTime:
Product viscosity measured at 65 cP, other products processed without issues 50 cP
Pump situated slightly lower (450mm) than tank outlet, pressure drop through valves/piping approximately 0.35m
Pump flow very stable, pressure not stable at pump outlet "oscillation"...
Hoping somebody can steer me in a direction
Centrifugal pump controlled by VSD, control loop increases/decreases speed dependent on end of process line pressure (min 2.0 bar)
Higher than sustainable amperage only occurs when operating specific products (higher viscosity) although not every time...
