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The Ashcroft experts are ready to help solve even the most difficult applications and technical issues regarding differential pressure gauges and all your pressure and temperature measurement needs. We offer a broad and varied standard product line, and our staff can work with you to custom fit the right product for your particular job too. Our highly trained team is ready to help meet your goals!
Dwyer continues to sustain and build upon a solid reputation in differential pressure gauges and other gauges and controls. With the ability to diversify across various and evolving market needs, Dwyer demonstrates why it maintains stability as a company, so come take advantage of their knowledgeable, prompt and courteous customer service today! Call, email or visit us on the web.
AMETEK® U.S. Gauge, a pressure gauge manufacturer, has been supplying quality products and services for 100 years, including pressure gauges, liquid filled gauges, precision test gauges, digital gauges, medical equipment gauges, process gauges and general equipment gauges. We are one of the world's leading suppliers of high quality, competitively priced pressure gauges. Call our company today!
At Tel-Tru Manufacturing Company, our focus has always been and always will be to meet and exceed our customers' requirements when it comes to producing quality products using cutting edge technology and responsive service. Our differential pressure gauges are of the highest quality and sure to meet your measurement needs. Call us today for more information about world-class manufacturing.
As a high quality custom designer & supplier of differential pressure gauges Automated Products Group. APG is known worldwide for innovative piezoelectric technology, competitive pricing and extremely high standards of quality. Most notably, our liquid level and pressure sensors have had huge success for OEM market leaders in oil and gas, automatic car wash & medical industries. Contact us today!
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Industry Information
View A Video on Differential Pressure Gauges - A Quick Introduction
Differential Pressure Gauges
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.
