Accuracy Tests
Gravimetric Accuracy Testing
Description
A Medication Cassette
weighed, then attached to a pump that is set to deliver a certain
amount of water. The Medication Cassette
removed and weighed again. The amount of water delivered is
compared to the amount that the pump should have delivered.
Nominal system accuracy is given in the technical specifications
section for the pump. That is, under the test conditions described
below, the accuracy of the pump and Medication Cassette
voir will be nominal with a 90% confidence level. The nominal test
conditions are as follows: degassed water at 25 ± 5°C without back
pressure.
Equipment needed
50 or 100 ml Medication Cassette
50 or 60 ml syringe
CADD
®
Extension Set with Anti-Siphon Valve
A balance accurate to 0.1 g
40 ml of room temperature water
Procedure
1. Fill the 50 or 60 ml syringe with 40 ml of water. Transfer
the water into a Medication Cassette
2. Remove any air from the Medication Cassette
by aspirating the air with the syringe. Attach the CADD
Extension Set with Anti-Siphon Valve. Prime the tubing
so it is filled with fluid to the end of the extension set luer
™
Reservoir is partially filled with water and
™
Section 5: Reference
™
Reservoir is then
Reservoir
™
Reservoir.
™
Reservoir
™
Reser-
®
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