A Magnehlic gauge is used to measure fan pressure, blower pressure, air velocity, furnace draft, pressure drop across orifice plates, liquid levels in bubbler systems, pressures in fluidic systems and filter resistance, according to Dwyer Instruments, Inc. These types of gauges are primarily found in commercial and industrial applications with regards to heating, ventilation and air conditioning (HVAC) systems.Know More
Magnehlic gauges feature accuracy to within 2 percent with more than 80 models available. Users can determine low air pressure, corrosive gas pressure and differential very quickly. ContractingBusiness.com reveals that the overall use for Magnehlic devices is to measure airflow within systems. These gauges help trained professionals determine whether to increase airflow efficiency in heating and cooling ducts.
Some devices can easily detect airflow movements. Gauges are attached to rubber tubing via a static pressure tip. The other end of the tubing is inserted directly into key areas of ductwork. Air flows out of the duct through a small hole into the tubing and up to the pressure gauge where the air moves a needle across a series of numbers. When readings are properly taken, experts compare the pressure to ratings for that particular system. Readings that are too low indicate something must be done to increase the flow of air within the HVAC system.Learn more about Motion & Mechanics
The Magnehelic pressure differential gauge is a device that measures and displays the pressure difference in various electrical and mechanical systems, such as fans and blowers. A Magnehelic gauge is also found in systems that uses gas and air pressures to measure and display ratio data.Full Answer >
A complete car tune-up includes spark plug replacement, rotor replacement, fuel injector cleaning, a new air filter, a new fuel filter, a new PCV valve and checks on various systems, including fluid levels, ignition, emissions, manifold intake, compression, timing, idle, distributor cap, battery, choke, vehicle computer, belts and safety. Anything that shows wear and tear should be replaced during a tune-up.Full Answer >
The term "absolute pressure" refers to the sum of the atmospheric pressure and gage pressure, expressed in the equation Pabsolute = Pgage + Patm. Absolute pressure is typically measured against a pure vacuum.Full Answer >
A manometer water column is the partially water-filled tube inside a manometer, a gauge used for indicating pressure. The water column is usually shaped like the letter "U" and therefore called a U-tube.Full Answer >