Importance of fresh air in manometer tubing

John Michael Cimbala, Richard S. Mcyer, Todd B. Harman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

It has been found that poor quality air inside manometer tubing can lead to significant errors when measuring very low pressure differences, such as in a low-speed wind tunnel. The obvious question is, how could the air inside the manometer tubing be so much denser than ambient air?. In the laboratory, the situation was remedied by blowing out each section of manometer tubing with a small hand pump. The dense gas in the manometer tubing was thus replaced by fresh air, and the rrors were completely eliminated. This is recommended by the authors as a preventative step prior to any pressure measurements, whenever new manomenter tubing is being used.

Original languageEnglish (US)
Pages (from-to)279-280
Number of pages2
JournalAIAA journal
Volume30
Issue number1
DOIs
StatePublished - Jan 1 1992

Fingerprint

Manometers
Tubing
Air
Pressure measurement
Blow molding
Air quality
Wind tunnels
Pumps
Gases

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

Cite this

Cimbala, John Michael ; Mcyer, Richard S. ; Harman, Todd B. / Importance of fresh air in manometer tubing. In: AIAA journal. 1992 ; Vol. 30, No. 1. pp. 279-280.
@article{d02b38feaf174abea494ddff11cd1202,
title = "Importance of fresh air in manometer tubing",
abstract = "It has been found that poor quality air inside manometer tubing can lead to significant errors when measuring very low pressure differences, such as in a low-speed wind tunnel. The obvious question is, how could the air inside the manometer tubing be so much denser than ambient air?. In the laboratory, the situation was remedied by blowing out each section of manometer tubing with a small hand pump. The dense gas in the manometer tubing was thus replaced by fresh air, and the rrors were completely eliminated. This is recommended by the authors as a preventative step prior to any pressure measurements, whenever new manomenter tubing is being used.",
author = "Cimbala, {John Michael} and Mcyer, {Richard S.} and Harman, {Todd B.}",
year = "1992",
month = "1",
day = "1",
doi = "10.2514/3.10914",
language = "English (US)",
volume = "30",
pages = "279--280",
journal = "AIAA Journal",
issn = "0001-1452",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "1",

}

Cimbala, JM, Mcyer, RS & Harman, TB 1992, 'Importance of fresh air in manometer tubing', AIAA journal, vol. 30, no. 1, pp. 279-280. https://doi.org/10.2514/3.10914

Importance of fresh air in manometer tubing. / Cimbala, John Michael; Mcyer, Richard S.; Harman, Todd B.

In: AIAA journal, Vol. 30, No. 1, 01.01.1992, p. 279-280.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Importance of fresh air in manometer tubing

AU - Cimbala, John Michael

AU - Mcyer, Richard S.

AU - Harman, Todd B.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - It has been found that poor quality air inside manometer tubing can lead to significant errors when measuring very low pressure differences, such as in a low-speed wind tunnel. The obvious question is, how could the air inside the manometer tubing be so much denser than ambient air?. In the laboratory, the situation was remedied by blowing out each section of manometer tubing with a small hand pump. The dense gas in the manometer tubing was thus replaced by fresh air, and the rrors were completely eliminated. This is recommended by the authors as a preventative step prior to any pressure measurements, whenever new manomenter tubing is being used.

AB - It has been found that poor quality air inside manometer tubing can lead to significant errors when measuring very low pressure differences, such as in a low-speed wind tunnel. The obvious question is, how could the air inside the manometer tubing be so much denser than ambient air?. In the laboratory, the situation was remedied by blowing out each section of manometer tubing with a small hand pump. The dense gas in the manometer tubing was thus replaced by fresh air, and the rrors were completely eliminated. This is recommended by the authors as a preventative step prior to any pressure measurements, whenever new manomenter tubing is being used.

UR - http://www.scopus.com/inward/record.url?scp=0026711345&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026711345&partnerID=8YFLogxK

U2 - 10.2514/3.10914

DO - 10.2514/3.10914

M3 - Article

AN - SCOPUS:0026711345

VL - 30

SP - 279

EP - 280

JO - AIAA Journal

JF - AIAA Journal

SN - 0001-1452

IS - 1

ER -