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Ashcroft's Blog

The Ashcroft blog provides helpful information about pressure and temperature instruments. Gain the knowledge you need to keep your business running!

Dave Dlugos, Product Marketing Leader, Temperature Products

Dave Dlugos has a BSEE degree and 40 years of experience in the measurement industry performing design engineering and product management. He has earned 4 U.S. patents and joined Ashcroft in 2007, currently as the Product Marketing Leader for Temperature products. He is a senior member of the International Society of Automation (ISA), past ISA District 1, Vice President, ISA water and wastewater division board member and the President of CT Valley ISA Section.

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pressure gauge | Pressure Instruments | pressure sensors

If you are working in an industry that requires instrumentation to measure and monitor pressure in a system, you already know the basic principle of pressure measurement. According to Pascal's Law, pressure is proportional to the force and inversely related to the area over which the force is applied. In other words, pressure is equal to force per unit area. Figure 1: Pressure Equation. Different systems and applications require different types of pressure measurement instruments. For example, mechanical pressure gauges may be used as visual indicators of pressure levels throughout a process. Conversely, pressure transducers or transmitters can sense changes in a system’s pressure and send a signal to a control room. If you are new to your industry and want to learn more about pressure instruments, this article will give you a high-level overview of how to read pressure, definitions of pressure types and the instruments used to measure pressure. Ashcroft is a recognized global leader in pressure instrumentation and is a trusted authority for related information. When you are done reading, you will find additional resources related to pressure measurement that may interest you.

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Bimetal Thermometers | RTD | thermocouple | thermometer | gas-actuated thermometer

All industrial applications use some kind of temperature instrument to ensure process temperatures stay within an acceptable range. Choosing the right device can help protect your equipment and your operators from extreme temperature shifts. However, the type of instrument you use will depend on many factors, including the temperature limits of the operation and the instrument, the required output and more. As a global leader in temperature and pressure instrumentation, Ashcroft created this article as a high-level overview of industrial temperature measurement options. If you are an industry novice or just want a refresher on the basics, this can serve as a good reference piece. Read on to learn about the different types of industrial temperature instruments, how they work, where they are used and why you might choose one over another. When you are done reading, you will find additional resources related to temperature measurement that may interest you.

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pressure gauge | Pressure Instruments | differential pressure gauge

A differential pressure gauge measures the difference in pressure between two points in a system and presents the subsequent differential pressure directly on a single gauge dial. Ashcroft has specialized in pressure instrumentation since 1852. As a leader in our field, we are often asked to provide information to individuals looking for a foundation of knowledge on this subject and more. Read on to learn where basic definitions related to differential pressure, where the gauges are used, how they work, and common applications. When you're done reading, you will also find additional resources that may interest you.

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Thermowells | Bimetal Thermometers | RTD | thermocouple

A thermowell is a device designed to protect temperature monitoring instruments from the damaging effects of corrosive media, high pressure and velocity in industrial applications. Without the protection of a thermowell, temperature instruments can become inoperable, putting your whole operation at risk. Ashcroft is a global leader in temperature measurement instrumentation. We created this article as part of our Understanding the Basics series to provide a foundation of information about thermowells. If you are an industry novice or just want a refresher on how thermowells work, this is a great place to start. In this article, you will discover where thermowells are used, learn about the different types of thermowells, see how they connect to the process piping and more. When you are done reading, you will also find additional resources that may interest you.

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Pressure Instruments | pressure switch | mechanical switch

A pressure switch is a control device that senses changes in pressure and mechanically opens and closes an electrical circuit at a pre-determined point. Unlike other pressure instruments like pressure gauges and pressure sensors that measure and monitor pressure, switches are a bit more complicated. Ashcroft is an industry leader in pressure measurement instrumentation and created this article to provide a basic foundation of information about switches for the industry novice. Read on to learn about the different types of pressure switches, common applications, how they operate, key terms, switch accuracy, activation methods and more. When you’re done reading, you will also find additional resources about switches that may interest you.

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Transducer | pressure transducers | Pressure Instruments | pressure transmitter

A pressure transducer, which can also be referred to as a pressure transmitter or pressure sensor, is an electronic device that measures and monitors the air, gas or liquid pressure flowing through industrial systems. Although they appear small, these instruments are built with advanced technology to provide accurate and reliable pressure measurements at different stages of the process. Ashcroft is an industry leader in pressure measurement instrumentation and created this article to provide a basic foundation of information about transducers for the industry novice. Read on to learn how they work and where they are used. You will also get a high-level overview of the different types of sensors, manufacturing standards, sensor accuracy and more. When you are done reading, you will also find additional resources about transducers that may interest you.