An Introduction to Fiber-Optic Sensors
Fiber-optic sensors are becoming the first choice for applications characterized by minimal space, adverse environment, or EMI and RFI. Why? Part of the answer lies in knowing what a fiber-optic sensor is.
Why the Internet Has Disappointed Engineers
The Internet places phenomenal amounts of information at your fingertips. Unfortunately, only a few companies have perfected the mechanics of delivering what you want, when you want it.
Sharing Data from Behind a Firewall
The Internet has made sharing company data with colleagues, vendors, and customers around the world a standard way of doing business. It's also made data security one of our top concerns. So how can you have it both ways?
Whether you're interested in surfing or flow measurement, there's a community of people out there who share your interest. List servers offer platforms for communication, providing the medium with which you can share ideas and exchange tips.
A User's Review: Online Product Searching
Still working on the Everglades environmental remediation project, two scientists revisit and reevaluate Web sites in their online search to find sensors and other equipment.
Manometers, devices for measuring differential fluid pressures, come in two flavors-liquid-based and digital. Knowing how each type works will help you make the best choice for your application.
PC-Based Motion Control
These systems are easier to program and offer more flexibility and better performance than PLC-based motion systems. Applications can be customized to meet current and future requirements, eliminating the need to reinvest in a new system.
Measuring Temperature and Liquid Level in Cryogenic Fluids
The Cryo-Tracker, a single probe capable of measuring liquid and ullage temperatures and liquid level inside cryogenic tanks, has been developed to solve mass gauging problems that engineers and technicians encountered while testing sub-cooled propellants for the space program.
Sensor AgentsWhen Engineering Emulates Human Behavior
Researchers are studying the human mind to find ways of enabling smart sensors to mimic our ability to learn, make decisions, communicate, and work together. Will these intelligent agents be managing your plant in 10 years?
Machine VisionMoving Beyond the End of the Line
New technology gives you cost-effective distribution of machine vision at key points along a manufacturing line. Ethernet networking gives you central management of that vision activity. The results: better process control and more effective use of vision data.
An Introduction to Analog Filters
Take a look at how analog electronic filters work. This introduction covers the basics, including the various types of filter functions and the circuits and techniques that implement them.
Tempted by vision systems, but daunted by the hardware and programming skills required? Give in to temptation. Hardware and software advances make implementing a system easier and more intuitive.
A User-Friendly, High-Sensitivity Strain Gauge
A single-crystal silicon strain gauge with a flexible polyimide backing combines the best properties of silicon and metal foil strain gauges. Its features include a gauge factor as high as 110, nickel or gold solder pads, and a 60 mil bend radius.
New Directions in Eddy Current Sensing
Nondestructive testing needs an effective, inexpensive way of detecting deeply buried or small cracks at the edges of metallic parts and structures. One solution comes in the form of solid-state magnetic sensors based on giant magnetoresistance (GMR) and spin-dependent tunneling (SDT) effects integrated in eddy current probes.
Looking Under the (Wheatstone) Bridge
Looking at each individual element of a Wheatstone bridge during normal operation makes it possible to understand the details of what, exactly, is going on electrically in a transducer during normal operation.
Magnetic Wire for Monitoring Strain in Composites
A new strain sensor is based on a small-diameter wire coated with a magnetic film that dominates the impedance of the wire and has a significant loss component. This loss component is highly strain sensitive, permitting effective measurement of both tensile and compressive applied strain.
An Open Architecture for Information Integration
Plant optimization requires integration of information from sensors/actuators, automation systems, and application software. Foundation Fieldbus incorporates a device-level network and a high-speed backbone that promise to bring it all together-fast.
Like a test bench in your PC, data acquisition cards can now handle multiquadrant operation and four-wire measurement, offering versatile test options that ensure that you get accurate readings.