The difference between Motion & Occupancy Sensors
Motion Sensors respond to Walking or Standing Movements. Occupancy sensors can detect fine movements in a sit down position. Motions rendered by people talking on phone, mouse clicks, laptop work can be sensed by a “true” occupancy sensor but not by an ordinary motion sensor
Motion sensing is normally used in toilets, corridors, parking areas, basements and other applications where the movement is always in an upright standing or walking condition. Occupancy sensors are always used for Office cabins, laboratories, libraries, design studios where the occupant is normally seated and the level of motion is severely restricted.
Motion sensors should normally be 50% cheaper than a True and Genuine Occupancy Sensors.
In a True occupancy sensor, the movement pattern schematic should specifically state finer movement areas and larger movement areas. Whereas the schematic pertaining to a motion sensor will only show a single movement area.
A motion sensor uses either PIR or High Frequency Technology where as a TRUE occupancy sensor will always use the PIR Technology only. Mischievously some suppliers offer a combination of both PIR and HF in a single module and qualify it as a OCCUPANCY SENSOR.
For a PIR based motion sensor the module should contain anywhere between 1 to 3 pyro detectors whereas a True Occupancy Sensor will always contain 3 or more pyro detectors.
A Motion sensor monitors the Lux level only once at the time of initial sensing but a TRUE occupancy sensor regularly monitors the ambient lux levels and turns on or off the lighting loads based on the prevailing levels.
Schematic For Occupancy Sensor Area in RED – Sensor picks up only walking motion Area in Yellow –Sensor picks up motion in seated position
TYPES OF SENSORS DALI Sensors for dimming and scene control Analogue Sensors for dimming control 24VDC Sensors for Building management [BMS] Acoustic Sensors for cabins, labs, Class Rooms Dual Channel Sensors for simultaneous HVAC and Lighting control Wall Switches [single gang design] for fitment in switch boxes ideal for small sized cabins. Can handle single or dual circuits simultaneously. Elimination of wiring Solar Based wireless sensors with chargeable battery. Based on 868 MHz frequency and the patented ENOCEAN Technology. High Bay sensors for warehouses, sports halls, arenas. These can be mounted at ceiling heights of 10 to 15 meters. Long Range sensors for sensing diameters of 24 meters or more. Suitable for Car Parks Sensors that work on a Master & Slave format. Ideal for car parks, long corridors, stairways, basements etc
A Global footprint in 90countries and 1580 staff members. This is the Steinel family for you ! These are quality certifications have Steinel
Customer submits drawings with electrical, wiring and lighting layouts Preparation of project details On Relux lighting and Sensor Software Submission of Relux project report along with Quotation & payback calculation to the customer Customer does not submit drawings with electrical, wiring and lighting layouts Visit to the Site for Survey Submission of report along with payback Calculations and Quotation to the customer On specific request data logging and metering can be carried out at the customer’s site Steps for Project Assessment and Pre-Feasibility Study Steps for Project Assessment and Pre-Feasibility Study
P N SENSOR DIRECT COM SENSOR TERMINALS SWITCH BOARD TO DIFFERENT LOAD SENSOR OUTPUT TWO WAY SWITCH MAINS CIRCUIT WITH TWO WAY SWITCH FOR BYPASS TO NEUTRAL N N N L’ L L
CIRCUIT DIAGRAM WITH LIGHTING LOAD AND HVAC INPUT SUPPLY OUTPUT SUPPLY P N N N N L’ L L
CIRCUIT DIAGRAM WITH LIGHTING LOAD AND AIRCONDITIONING C O I L INPUT SUPPLY OUTPUT SUPPLY CK1 CK2 CK3 CK1 CK2 CK3 SENSOR MODE INPUT SUPPLY DIRECT MODE TO NEUTRAL N N N L’ L L LIGHTING CIRCUIT AC CONTACTOR
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