They indicate the internal pressure within vessels or systems and are used particularly for environments where the pressure changes frequently, therefore requiring constant monitoring. Read More…
Leading Manufacturers
Fathoms Technology, Inc.
Georgetown, TX | 888-328-4667Fathoms 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.
Auto Meter Products, Inc.
Sycamore, IL | 866-248-6356For 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.
SIKA USA
Sturtevant, WI | 262-886-2895SIKA 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.
Anderson Process
Plymouth, MI | 262-784-3340Anderson 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.
A differential pressure gauge's components are housed in a metal enclosure; materials include stainless steel, cast iron, bronze, brass and aluminum. The windows are usually double-strength glass. Specific pressure gauges have additional materials such as plastic or rubber. Differential liquid pressure gauges are themselves filled with certain liquids including oil, glycerin and silicone. Pressure gauges are often used in tandem with protective accessories like shutoff valves.
Other accessories include pipe coils, chemical seals and secondary valves to minimize condensation and to allow calibration against an external pressure source such as atmospheric pressure. Differential pressure gauges have two inlet ports that monitor the pressure in two separate vessels. These pressure gauges are used in applications where it is important to take two measurements and compare them, determining which vessel or system has the highest flow velocity, for example. Differential pressure gauges are utilized by manufacturing and industrial plants and companies.
Differential pressure gauges perform subtraction in order to indicate the difference between the two readings. This eliminates the need for an operator or computer system to watch two gauges and perform the math. It is fast and efficient to have the information immediately and constantly displayed in one location. There are three main types of differential pressure gauges: Bourdon, diaphragm and piston. The Bourdon gauge has two C-shaped or coiled tubes connected to the chambers or pipes where the pressures must be read.
When pressure increases, the tubes uncoil. The motion of the two tubes is registered and a mechanical linkage compares the readings. Diaphragm gauges use two hermetically sealed membranes that flex in accordance with the pressure. The ports of the membranes are open to each other to compare pressures.
Piston type differential pressure gauges are also called deadweight testers because they counterbalance the pressure of a fluid with a solid weight or spring. As is the case with all three kinds, the difference is measured by a sensor and indicated on the gauge. The results may be displayed as analog, such as a needle on a dial, or they may be digital with numbers on a LED panel.
