Model OLS-12 optical level sensor provides a rapid response to change of liquid level and a stable process control with no moving parts to grind or wear out. Designed for corrosive applications, the pfa-grade Teflon unit's bright green and red LEDs offer local indication for the presence or absence of liquids. This sensor incorporates an NPN open collector output signal. Current consumption is 35 mA dc maximum, and power supply is 10 to 28V dc. Leads are 22 gauge and 18 inches long with tinned ends.
Dwyer Instruments Inc., Box 373, Michigan City, IN 46361, FAX (219) 872-9057.
One way to keep a Formula One racing team moving at breakneck speed in the pit and at the test facility is to bring CAD drawings of the racing vehicleís parts down to the test facility and even out to the track.
Most of us would just as soon step on a cockroach rather than study it, but thatís just what researchers at UC Berkeley did in the pursuit of building small, nimble robots suitable for disaster-recovery and search-and-rescue missions.
Design engineers need to prepare for a future in which their electronic products will use not just one or two, but possibly many user interfaces that involve touch, vision, gestures, and even eye movements.
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