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Bill Schweber

Kelvin 4-Wire sensing solves the “IR Drop” problem

August 20, 2020 By Bill Schweber

Novice engineers usually don’t learn about this problem and its solution in school, but “practicing” ones learn about it soon enough! Problem: I need to determine the change in resistance of a low-resistance sensor located many meters away. My plan was simply to apply a known voltage across the thin-wire sensor leads and measure the […]

Filed Under: Current Sensor, Featured, Frequently Asked Question (FAQ), Other Tagged With: FAQ

LVDT position sensor, Part 2: Characteristics

August 17, 2020 By Bill Schweber

The linear variable differential transformer (LVDT) is a widely used, inherently rugged, linear-position sensor offering accurate and consistent performance over a wide span of distances. Part 1 of this FAQ looked at the basic operation of the LVDT. This part looks at some of its other performance attributes and characteristics. Q: What does an LVDT […]

Filed Under: Featured, Frequently Asked Question (FAQ), LVDT, Position Tagged With: FAQ

LVDT position sensor, Part 1: Basics and principles

August 16, 2020 By Bill Schweber

LVDT position sensor

The linear variable differential transformer (LVDT) is a widely used, inherently rugged, linear-position sensor offering accurate and consistent performance over a wide span of distances. Sensing of physical position is among the most commonly needed parameters in industrial, military/aerospace, robotics, scientific measurement, and control applications, and there are many sensors in use to accomplish this. […]

Filed Under: Featured, Frequently Asked Question (FAQ), LVDT Tagged With: FAQ

What are cryogenic temperature measurements? Part 2

August 21, 2019 By Bill Schweber

cryogenic temperature measurements

Part 1 of this article looked at sensing and sensors for ultracold and cryogenic temperatures; Part 2 advances the story to more esoteric situations. Q: What’s the fundamental difference between measuring extremely high temperatures versus cryogenic ones? A: When things get really hot, extending into thousands of degrees, the sensor options are limited. Usually, it […]

Filed Under: Featured, Frequently Asked Question (FAQ), Gas Sensor, Other

What are cryogenic temperature measurements? Part 1

August 19, 2019 By Bill Schweber

cryogenic temp measurements featured

Cryogenic temperatures may seem only of limited interest, but they are actually critical in many instrumentation and other systems. Measuring these ultralow temperatures is both easy and difficult, depending on temperature, material, and mass. Temperature is the most commonly measured physical variable, whether it’s just to assess the local weather to manage the performance of […]

Filed Under: Featured, Frequently Asked Question (FAQ), Gas Sensor, Other Tagged With: analogdevicesinc, FAQ, teconnectivitymeasurementspecialities

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