TFS Takasago Fluidic Systems

Metering pump -The Effect of Operating Frequency on Repeatability-

March 30, 2020

A change in operating frequency affects pumped volume and repeatability. Repeatability decreases when the operating frequency is higher than the value specified on a drawing. 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 500 mm3 when the operating frequency is 2Hz.


Other than the conditions specified, the measurements follow the standard test conditions.

Note: Details such as specifications, etc., may be changed without notice.


Experimental Data of Repeatability Versus Operation Frequency

Operating Frequency Repeatability
5 Hz +5.88%
-7.00%
3.3 Hz +5.08%
-2.39%
2 Hz (Value is specified on the drawing.) +0.09%
-0.28%
1.7 Hz +0.09%
-0.09%
1.3 Hz +0.07%
-0.09%
1 Hz +0.10%
-0.10%
Manual Operation (Single Discharge) +0.12%
-0.25%

Note 1: Details such as specifications, etc., may be changed without notice.

Note 2: (*Upper Row: Error of the Max. Value, Lower Row: Error of the Min. Value)


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