22 Performance data
22.1 Pumping conditions
For precise and repeatable performance it is important to calibrate your pump on a
regular basis.
Actual flow rates achieved may vary to those displayed on the screen because of
changes in
temperature,
viscosity,
inlet and discharge
pressures,
system
configuration and pumphead performance against time. For the highest accuracy it
is advisable to calibrate the pump on a regular basis.
Where discharge pressures are quoted, they are the root mean square (RMS)
discharge line pressures.
22.2 Pressure capability
qdos30 can be operated continuously at discharge pressures of up to 7 bar (100psi).
The pump can be operated at discharge pressures of up to 10 bar (145psi) on an
intermittent basis, however flowrate and pumphead life will be affected.
22.3 Dry running
qdos30 will continue to operate when there is gas present in the suction line and will
maintain prime in these conditions. The pump can be run dry, however flow rate and
pumphead life will be affected.
22.4 Pumphead life
Application factors that influence pumphead life are pump speed, chemical
compatibility and viscosity of the duty fluid and suction and discharge pressure.
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