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Tubing Wall
Thickness
1.5 mm
1.5 mm
1.5 mm
1.5 mm
1.5 mm
1.5 mm
* Metric mL per Revolution numbers are rounded off
Normalized flow rates (mL per revolution) vary significantly, based on
motor speed, tubing materials, and mechanical tolerances in pump
dimensions. In addition, the variances are different for the different
tubing dimensions. Variances from the normalized flow rates of Table
9-2 are shown below. The data is shown for new tubing only.
Tubing operating life tests are done at 600 RPM, with 20°C water, 0 PSI
back pressure until the tubing breaks
Table 9-3. Variances in Normalized Flow Rate (mL per Revolution)
Tubing Size
Inner Diameter
(in.)
⁄
1
3 2
⁄
1
1 6
⁄
1
8
⁄
3
1 6
⁄
1
4
⁄
5
1 6
Table 9-2. Average Flow Rates (Cont'd)
Tubing Size
Inner Diameter
3.0 mm
4.0 mm
5.0 mm
6.0 mm
7.0 mm
8.0 mm
Due to
Motor
Speed
±10%
±10%
±10%
±5%
±5%
±15%
mL per
Minimum Flow
Revolution
Rate at 600 RPM
(mL/Minute)
0.8*
1.43*
2.1*
2.7*
3.6*
3.9*
Between Pumps
(due to Mechanical
Tolerances)
±25%
±15%
±10%
±10%
±15%
±20%
Specifications
Maximum Flow
Rate at 600 RPM
(mL/Minute)
8
15
21
1257
27
1607
37
2187
39
2316
Due to Different
Tubing Materials
±20%
±15%
±5%
±5%
±5%
±10%
9
482
857
9-3
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