Terumo Advanced Perfusion System 1 Operator's Manual page 186

Roller Pumps
Select: Tube Size
The correct flow constant must be entered in order for the flow rate to be properly
calculated. For PVC medical grade tubing, a number of predefined flow constants for
standard tubing sizes can be selected using the "SELECT: TUBE SIZE" menu (see
the following tables for flow constants for large and small tube sizes). When using
silicone tubing, flow constants may vary slightly from the default values tabulated. If
required, precise flow constants may be determined using "Select: Flow Constant" as
detailed below.
To change the pump tube size:
1. Press the Select button when SELECT: TUBE SIZE is highlighted.
2. Turning the knob will successively display the options for standard tube sizes.
3. Press the Select button to save a new tube size.
4. When the selection is made, the main pump menu is displayed.
The system will retain this selection until a new selection is made from the CCM or
from the pump control panel.
Tube Sizes and Flow Constants
Large Roller Pump
Tube Size mL/revolution
1/8 in. 3.25
3/16 in. 7.38
1/4 in. 12.69
5/16 in. 18.17
3/8 in. 27.20
7/16 in. 36.39
1/2 in. 43.19
6mm 11.70
8mm 19.00
10mm 27.90
12mm 45.00
S1:1 25.38
S2:1 19.23
S4:1 15.75
S8:1 14.47
For nonstandard tube sizes, the large and small roller pumps both support user-
defined flow constants in the range from 1 to 650.
Flow Constant
FC Value Tube Size
033 1/8 in.
074 3/16 in.
127 1/4 in.
182 5/16 in.
272 3/8 in.
364 6mm
432 8mm
117 10mm
190 S1:1
279 S2:1
450 S4:1
254 S8:1
192
158
145
5-19
Small Roller Pump
Flow Constant
mL/revolution FC Value
2.21 022
4.68 047
8.03 080
11.41 114
15.97 160
7.40 074
12.10 121
16.90 169
16.00 160
12.04 120
10.11 101
9.24 092