Occupancy Sensors

INFRA-RED AUTOLIGHT
Occupancy Sensor for Energy Saving
• Unsurpassed relay contact rating of 30A
• Saves Energy from 25-75%
• Monitors Occupants movements
• Switches Fluorescent lights on & off
• PIR or Ultra Sonic or both
• Bank switching


INTRODUCTION

The COSINE DEVELOPMENTS occupancy energy management systems are motion-sensing devices that automatically turn on and off fluorescent luminaries. They save energy by turning off lights when areas are not in use. Case studies have shown energy savings from 25-75%.

An appropriate application for an occupancy sensor is in a space that is used infrequently or unpredictably, such as a:
• Conference Room
• Private Office
• Storage Area
• Restroom

Although the system can be used in any area, occupancy sensors should be a part of any companies lighting system, mainly because many offices are left unoccupied for a significant amount of time each day, typically with the lights on. Reducing this load will result in measurable savings. If the company does not "sweep" lights off during night-time hours, weekends and holidays, the sensor will ensure that the lights are off when the space is unoccupied.

It is probable that more energy savings will be derived from having the lighting system turned off by sensors at these times than will be realized during normal working hours.

The occupancy sensor is an energy-saving control device that turns lights on and off depending on the occupancy of the space being controlled.

When people are in the room, the lights are enabled on, and when the room is vacated for a set period of time (usually 15 minutes) the device turns off the lights. This provides energy savings ranging from 25 percent to 50 percent, depending on the habits of the occupants of the space.

When electric lighting controls are used properly, energy will be saved and the life of lamps and ballasts can be extended. Lighting controls will help reduce energy by:

• Reducing the amount of power used during the peak demand period by automatically  turning them off when they are not needed
• Reducing the number of hours per year that the lights are on
• Reducing internal heat gains by cutting down lighting use, which allows for reduced HVAC system size and a reduction in the building's cooling needs
SPECIFICATIONS:
Nominal Input voltage 220 Vac
Time delay min (5sec); max (30 min)
Rated load (55 x 36 Watt T8 lamps) 2kW
Power consumption 0.45(static 0.1W)
Detection speed 0.6 – 1.5m/s
Detection angle 360 degrees
Maximum load (suitable for bank switching) 30A
Ambient light <3 lux - daylight
Working temp 10°C - 32°C
Installation height >3m
Switch function Auto/off/manual override
Detection range 15m
Companies must account for false triggering of sensors, which could occur when someone walks past the door of a controlled room and is "picked up" by the sensor, or when a sensor turns off lights in an occupied room where the occupant has remained still for the sensor's shutoff time period.

When adjusting occupancy sensors, particular attention should be given to patterns of usage in the space. In general, "pass-through" areas such as stairwells should be programmed with shorter delays, while frequently used areas should use longer delays to avoid nuisance on/off.
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Durban, South Africa

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4056, South Africa

E-mail:
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COSINE DEVELOPMENTS
Leaders in lighting technology
Cosine Developments
Cosine Developments