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level and gas lift mandrels. The noise also interferes with the automatic identification of the liquid level echo as
discussed later.
The Toggle Filter option allows digital filtering of the record with a Low Pass filter to eliminate the noise as
shown in the following figure:
After filtering, the vertical scale ( now set at 31.6 mV) should be readjusted using the Up/Down arrow keys to
better observe the details of the record as shown in the following figure where the vertical scale is set at 3.2 mV:
Echometer Company
Phone: (940) 767-4334
Model – H Manual
5001 Ditto Lane
Page 44
Fax: (940) 723-7507
Wichita Falls, Texas 76302, U.S.A.
E-Mail:
info@echometer.com
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