Occupancy Sensor Design Guide Posted on February 17, 2017 by Brandy McNeil DO Use Ultrasonic sensors in areas screened by partitions or furniture Use PIR in enclosed spaces Create zones controlled by different sensors to manage lighting in large areas Use dual technology sensors for areas with very low activity levels Install sensors on a vibration-free, stable surface Position sensors above or close to the main areas of activity in a space Mask the sensor lens to define coverage of the controlled zone even more accurately Integrate sensor use with other control methods (i.e. scheduled control, day lighting) Educate occupants about the new devices and what to expect DON’T Use ultrasonic sensors in spaces with heavy air flow Install ultrasonic sensors in spaces where the ceiling height exceeds 14 feet. Use PIR sensors in spaces where there are fixtures or furniture that obstruct a clear line of sight Install PIR sensors so that their line of sight continues beyond doorways Install sensors within 6-8 feet of HVAC outlets or heating blowers Position a wall switch sensor behind an office door Control emergency or exit lighting with sensors Install PIR sensors in spaces where there are extremely low levels of occupant motion
