This article presents the proof-of-principle of a new sensor capable of detecting the position of the interface between two fluids.

Knowing the viscosity of an oil allows you to determine its condition; we evaluate a real-time viscosity sensor and compare its results with those generated using a lab rheometer.

A new approach to wireless sensor networking adds local intelligence to the nodes, creating pervasive computers and enabling sensor networks that can both acquire data and initiate action without human intervention.

Try linearizing your thermistor's output with a Wheatstone bridge.

A fluorescent long-line fiber-optic position sensor has been devised for measurement ranges varying from centimeters to many meters where extremely high resolution is not required. The sensor can also measure the position of several objects simultaneously.

Increasingly strict regulations present a challenge to those shipping magnetized materials. Here's how a Hall effect gaussmeter can help.

Wireless sensors installed inside a cargo container? Aren't they metal? Then the radio signal can't get out . . .or can it? Here's how mesh-networked 2.4 GHz, 802.15.4-compliant RF transceivers performed when placed within cargo containers.

How do you evaluate the performance of ammunition inside the barrel of a gun? By squeezing a little data recorder and its associated electronics into the round itself.

Inductive proximity sensors are inexpensive, durable, and resistant to industrial contaminants. But if your sensor will be exposed to target impacts, abrasion, corrosive cutting compounds, and other abuse, you need to pay very close attention to which sensor you choose and how you mount it.

The term "data model" refers to the way in which information flows through a network. Here are five major data models, each appropriate for a particular type of application.