Pump Accuracy - CME BodyGuard 595 Color Vision Operator's Manual

Pump Accuracy

The following graphs and curves were derived from testing described in IEC60601-2-24.
Testing was performed under normal conditions at room temperature (72
deviations from normal conditions and room temperature may cause changes in the
accuracy of the pump.
Start-up Curves
The Start-up curves represent continuous flow versus operating time for two hours from
the start of the infusion. They exhibit the delay in onset of delivery due to mechanical
compliance and provide a visual representation of uniformity. Trumpet curves are
derived from the second hour of this data. Tests performed according to IEC 60601-2-
24 standard.
Trumpet and Flow Rate
With the BodyGuard 595 Color Vision™, as with all infusion systems, the action of the
pumping mechanism and variations cause short term fluctuations in rate accuracy.
The following curves show typical performance of the system in two ways:
The accuracy of fluid delivery over various time periods is measured (trumpet curves).
The delay in onset of fluid flow when infusion commences (start up curves).
Trumpet curves are named for their characteristic shape. They display discrete data
averaged over particular time periods or "Observation windows", not continuous data
versus operating time. Over long observation windows, short-term fluctuation has little
effect on accuracy as represented by the flat part of the curve. As the observation
window is reduced, short-term fluctuations have greater effects as represented by the
"mouth" of the trumpet.
Knowledge of system accuracy over various observation windows may be of interest
when certain drugs are being administered. Short-term fluctuations in rate accuracy
BodyGuard 595™Color Vision Operator Manual
1 – Introduction
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