Precise Low-Pressure Measurements with Thermocouple Gage

1946 ◽  
Vol 18 (12) ◽  
pp. 800-801 ◽  
Author(s):  
W.G. Smiley
Keyword(s):  
Low Pressure ◽  
Pressure Measurements

Pressure and Its Measurement

2011 ◽  
pp. 1-11
Author(s):  
James R. Munis
Keyword(s):  
Volume Change ◽  
Low Pressure ◽  
Body Fluids ◽  
Fundamental Difference ◽  
Pressure Measurements ◽  
Mechanical Pressure ◽  
Semantic Point

In physiologic terms, we are exposed to 3 main sources of pressure: 1) the weight of the atmosphere; 2) hydrostatic forces exerted by the weight of body fluids; and 3) mechanical pressure generated by the heart or other muscles that contract around those fluids. Because cardiopulmonary physiology deals so much with pressure measurements, let's start by defining what pressure really is. Simply put, pressure is force divided by area. It's also important to understand what pressure is not. For example, pressure is not energy. Only when pressure is coupled to a volume change (ie, movement or pressure-volume work) is it a component of energy. This is more than just a semantic point. Although we're fond of saying that fluids move from high to low pressure, that isn't always true. The reason why highlights a fundamental difference between pressure and energy. Pressure is surprisingly difficult to measure. Often, when we think we are measuring pressure, we are actually measuring stretch or movement.

scholarly journals A Fabry-Perot sensor prototype for low-pressure measurements

2014 ◽  
Vol 56 (12) ◽  
pp. 2981-2986 ◽  
Author(s):  
P. Roriz ◽  
M. S. Ferreira ◽  
K. Schuster ◽  
J. Kobelke ◽  
O. Frazão
Keyword(s):  
Low Pressure ◽  
Pressure Measurements ◽  
Fabry Perot
Sign in / Sign up

Export Citation Format

Share Document