A change in operating frequency affects pumped volume and repeatability. When
the operating frequency is higher than the value specified on a drawing,
repeatability decreases. An example of measured changes in repeatability
resulting from varying operating frequencies is shown in the table below.
Model
number used: NRP-500P
Measurement conditions:
The pumped volume is set at 500mm3 when the operating frequency is 2Hz.
(Other
than the conditions specified below, the measurements follows the standard test
conditions.)
Experimental
data of repeatability versus operation frequency
|
|
|
|
5Hz
|
+5.88%
|
|
-7.00%
|
|
3.3HZ
|
+5.08%
|
|
-2.39%
|
|
2Hz
（Value specified on drawing）
|
+0.09%
|
|
-0.28%
|
|
1.7Hz
|
+0.09%
|
|
-0.09%
|
|
1.3Hz
|
+0.07%
|
|
-0.09%
|
|
1Hz
|
+0.10%
|
|
-0.10%
|
|
Manual
operation
（Single
discharge）
|
+0.12%
|
|
-0.25%
|
(*
Upper row：
error
of
the max. value, Lower
row：
error
of the min. value)
