Register Here | Login | My Account | Shopping Cart | Customer Service | Search| Items in Cart (0) | Quotes (0)
Call 1-800-369-6671
(Military/Intl Sales - 214-616-6180)
LIGHT TOWERS IN STOCK
       
 

Vast Inventory for Fast Shipping. Custom Builds Available, Rentals and Sales.
Most items in stock for fast shipping!! UPS Ship Map Credit cards & Paypal Accepted
Home - Articles You're NOT logged in, Please log in   

Search:
Company Information

Product #:

         
ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
Megatower™
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Yacht Engine Room Lights
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Aevum Control Lighting and Equipment - IIoT
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
**********    
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
**********    
**********    
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
**********    
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
**********    
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
**********    
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
**********    
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
**********    
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
**********    
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
**********    
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
**********    
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
**********    
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
**********    
Hazard Lights
Strobe Lights - Battery Operated
Strobes & Beacons
Strobe Light Bars
**********    
Headlights - Headlamps - Hard Hat Lights
Flashlights
**********    
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
**********    
**********    
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
**********    
Power Plant Lighting
Refinery lights
Environmental Services Lights
Aerospace Lights
Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting
         

   
07/10/17 How Do Day/Night Photocell Sensors Work?

Article - July 10, 2017 By LarsonElectronics.com

4000W Metal Halide Light Tower on 12' Single Axle Trailer - 25' 3-Stage Mast - Day/Night Photocell

How Do Day/Night Photocell Sensors Work?

Solar lighting systems are viewed by many individuals and businesses as the ultimate solution to sustainable illumination. However, the technology isn’t scalable enough (from a cost and efficiency perspective) to handle large lighting systems and continuous illumination requirements for long periods of time.

While engineers and manufacturers work on solutions to close this gap in performance and demand, early adopters of solar lighting have several options available to help make their units more reliable. One of these methods include the use of a day/night photocell sensor.

Read on to learn about the mechanisms and advantages of this crucial component in solar lighting.


Photocells 101

A day/night photocell sensor is capable of autonomously detecting the presence of light in its respective environment. The units have no moving parts and they do not rely on connection to the grid for operation. This is why they work so well with solar lighting units. When in use, the component serves as a light sensitive resistor. It is highly resistant to darkness and offers low resistance when light is present.

An example of a light sensitive photocell is a cadmium-sulfide photo resistor (CdS). These components can be found in street lights and other luminaries that require automation. For such applications, resistance can bottom out at millions of ohms (when exposed to dark environments) and reach hundreds of ohms under the presence of light.


Photocells vs Timers

In addition to photocells, owners of solar lighting systems may also use timers to control or automate lighting functions. These units are useful for on-demand lighting controls. For example, project managers can set a timer to turn off lights automatically on the work site to prevent unnecessary use. Some timers allow the input of multiple timing configurations. This is useful for randomizing light output (mostly applicable to residential homes).

The main drawback with using timers is its inability to adjust to environmental changes. For optimal functionality, operators must adjust the setting of the timer to match local sunrise and sunset periods. This could vary, depending on the season or month. Furthermore, timers aren’t sensitive to changes in weather. If cloudy weather calls for the lighting system to be used a couple of hours early, operators are forced to turn the luminary on manually.

The use of timers or photocells heavily depends on your lighting needs. For remote locations, such as agricultural sites, walkways with low activities, hard-to-reach locations, perimeter lighting and etc., photocells are highly recommended. For unpredictable lighting requirements, including outdoor events, work site lighting, repairs and etc., timers are more suitable due to fine-tune control features.


Applications in Portable and Remote Solar Lighting

Day/night photocells make portable solar lighting systems more efficient. For instance, a solar lighting assembly on a cart, which is a superior solution for busy industrial sites due to quiet and reliable operation, has limited space for panels, batteries and lamps. Loading up the cart would either make it too heavy or unmanageable. This means that both battery capacity and panel efficiency can only be maxed out up to a certain point, due to space limitation issues. To reduce the strain on solar panels and batteries, operators can turn to day/night photocell sensors.

For remote solar lighting systems, day/night sensors can increase the lamp’s lifespan by limiting operations to dark, nighttime conditions. This is also advantageous for luminaries that are installed in hard-to-reach areas, such as tall poles, ceilings and ledges. Maintaining or re-lamping in these locations are often costly and time consuming. Advanced photocell sensors are capable of detecting slight changes in light, such as the presence of dark clouds or haze.

To conclude, day/night photocell sensors are essential components to solar lighting systems. They provide an easy and simple way to conserve energy, while improving the lifespan of lamps and efficiency rates of the entire unit.





Related Categories/Products
Category/Product (click on link below for more information)
LED Lights
Low Voltage Outdoor Lighting
Low Voltage Dock Lights
Solar Dock Lights
Trailer Mounted Towers and Light Plants
Remote Area Lighting and Scene Lights
Articles - Towers & High Mast
Strobe Lights with Sensors and Alarms
Outdoor Rated Flood Lights
Solar Powered LED Light Beacon - Class I - 30 Strobing Patterns - Day or Night Use
Class I LED Beacon with 30 Strobing Light Patterns - Dusk to Dawn - Surface Mount - 12-24V DC
Class I LED Beacon with 30 Strobing Light Patterns - Motion Sensor - Surface Mount - 12-24V DC
Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.