Photocells


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Photocells

A light-sensing device used to measures the amount of incident light present in a space and activate controllers at dawn or dusk.
References in periodicals archive ?
In environments where these reguirements are addressed, the photocell option offers one of the safest and most efficient solutions.
New light standards are being installed across the borough which already have light sensitive photocells.
We can't find any CFL bulbs that work with a photocell.
hom] produced by either of the photocells will be proportional to the breadth b of the light spot measured on the surface of the photocell when the axle is rotating, i.
The corresponding photocells generate sinusoidal signals, electrically phase-shifted to one another by 90 degrees.
For applications up to 60 products per minute per lane, photocells determine the position of the product and operate a sequence of lifting mechanisms to lift the product off the continuously running feed belts in order to correct the position of the product relative to the converging unit.
The CdS Photocells tense light in the spectral range from 515 to 730 nm, have a peak wavelength of 515 nm, and feature glass window and plastic coating construction.
When the door is closing the photocells always remain positioned six inches below the door panel's edge so they will detect an object before the door can make any contact.
Install only compact fluorescent or high pressure sodium fixtures for security lighting and consider motion sensors or photocells to operate lights automatically.
In 1936, Thanheiser and Heyes reported the first photoelectric detection of spectra using photocells, marking the birth of spectrometry.
Digital encoders are available to measure piston travel for Method B with much higher precision than the older optical technology using photocells.
Dimming to 20%, these new dimmable products can be operated on electronic photocells and timers.