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Vacuum Gauges

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High pressure gauges can be used to effectively read pressures up to 10,000 PSI; low pressure gauges generally measure pressures between 10 and 15 PSI. When gases and liquids are contained in sealed systems or closed vessels, internal pressure occurs. Read More…

Vacuum Gauges Vacuum gauges are instruments used to measure and display sub-atmospheric or vacuum pressures within a system or vessel.
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Leading Manufacturers

Georgetown, TX  |  888-328-4667

Fathoms Technology manufactures and distributes a wide range of instrumentation for the measurement and control of gas and liquid applications. Our Texas facility produces an economical line of "Gas Mass" flow meters and controllers as well as offering NIST traceable calibrations for meters of all types. Level Switches, Pressure Transducers, Pressure Switches, Digital Pressure Gauges.

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Fathoms Technology, Inc. $$$

Sycamore, IL  |  866-248-6356

For more than 50 years, Auto Meter Products, Inc. has given racers and vehicle builders revolutionary vehicle electronics and instrumentation. We provide state-of-the-art cellular manufacturing operations, a world class ISO 9000:TS 16949 Certified Quality System, an advanced engineering team, and product technology that is unmatched in the instrumentation industry.

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Auto Meter Products, Inc. $$$

Sturtevant, WI  |  262-886-2895

SIKA USA is a developer and manufacturer of pressure gauges and a wide variety of other measuring and monitoring systems. We offer both standard pressure gauges and bourdon tube pressure gauges. Our pressure gauges are made with high-quality materials meant to withstand their environments and read accurately every time. Our pressure gauges are EN 837-1 compliant and are encased in stainless steel. They also come in different sizes, so finding one to fit your needs is simple.

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SIKA USA $$$

Plymouth, MI  |  262-784-3340

Anderson Process is a trusted supplier of fluid process equipment and service. We offer many products and services including, pumps, hose, filtration, process equipment and our expertise to help our customers optimize their fluid operations. Our goal is to increase production output, reduce maintenance costs and drive efficiency.

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Anderson Process $$$
placeholder image Fathoms Technology, Inc. Auto Meter Products, Inc. SIKA USA Anderson Process

When the atmospheric pressure within an enclosure is below ~14.7 PSI, that enclosure is said to be a vacuum. It is impossible to artificially achieve a pressure of zero, and there are no examples of absolute vacuums in nature or in space. An enclosure can, however, be partially evacuated of its contents. Vacuum gauges are used to measure the extent to which enclosures have been evacuated; they measure low pressure, not negative pressure. Vacuum gauges are made from metal such as stainless steel or aluminum.

Some provide analog feedback in the form of a dial while others are digital meters. Gauge specifications include display types, scale types, vacuum range, operating temperature, accuracy and scale units. Dual scale devices provide the pressure reading in two sets of units while differential pressure gauges take and compare two pressure readings.

Vacuum Gauge Vacuum Gauges - HydraCheck

Some vacuum gauges include temperature compensation features to adjust possible errors due to changes in temperature. These instruments play an important role in industrial, manufacturing and scientific applications. Vacuums are frequently used to create cold temperatures for certain processes; without gauges the operator would not know the internal pressure, which can be dangerous and inefficient.

Vacuum gauges use several methods to take readings. One way is through a manometer, a U-shaped tube partially filled with a liquid like water, mercury or oil. A change in pressure causes the water column in each side of the U to rise or fall, which is detected by a sensor and then indicated on the dial or screen. Thermocouple gauges use a different technique. They measure the changes in the thermal conductivity of a gas inside a tube. A filament is heated to promote movement.

As electrons move from the source (cathode) to the drain (anode) they interact with the gas molecules, making them positive ions. This causes a current that is identified and measured. Similar gauges are also available with components that stay cool; this allows them to withstand sudden or prolonged exposure to high pressure gases. Vacuum gauges are also used in automobiles because of the presence of manifold vacuums that draw in air to power the engine of the vehicle.

This vacuum regulates the ratio of fuel and air so the engine can run at peak performance. Automotive vacuum gauges help identify the presence of air leaks in the system, which results in a rough idle, poor fuel economy and increased emissions. These gauges are attached to a plug on the intake manifold of the engine.

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