An electronic bubble flowmeter is a primary standard for calibrating sampling pumps, since a physical displacement of air can be measured directly.
Wei-Hsung Wang, Ph.D., CHP
Radiological & Environmental Management
Purdue University
-----Original Message-----
From: William Lorenzen [mailto:LORENZEN_W@A1.TCH.Harvard.edu]
Sent: Saturday, October 07, 2000 11:43 AM
To: Multiple recipients of list
Subject: Re: Calibration/Verification of Rotameters
Is an electronic bubble meter a "primary standard" or a secondary
one?
Thanks for the clarification.
William A. Lorenzen
lorenzen_w@a1.tch.harvard.edu
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