Measuring flow below atmospheric pressure

Pressure drop increases as line pressure decreases. Oversizing devices used in subatmospheric applications lets them handle the volumetric flow rates.

Gauge pressure measured in the test section of a water tunnel at the US

An Introduction to Pitot Tubes and Probes

EngArc - L - Absolute, Gage, Vacuum, and Atmospheric Pressures

1. The schematic below shows an experimental setup

How To Measure Air Volume - Amount Of Exhaust : ITW EAE Support Center

Apparatus to measure hydraulic resistance in stem segments at constant

Homework II Solutions - Fluid Mechanics Applications, MECT 3318, Study notes Fluid Mechanics

Measurements in Air and Fuel Circuit in Power Plant

HVAC Field Tools: Measuring Air Pressure and Flow

Atmospheric, absolute, gauge, and differential pressure

A sealed-tube manometer as below-mentioned can be used to measure pressures below atmospheric pressure. The tube above the mercury is evacuated. When there is a vacuum in the flask, the mercury levels

Pressure Gauge: What Is It? How Is It Used? Types Of

Pressure-based Flowmeters, Introduction to Continuous Fluid Flow Measurement