Complete Compiled Specification.pdf - Peck Ormsby Construction

size and weight moves only within or a maximum distance of twelve inches either in a
horizontal or vertical manner at the approximate speed of 12 inches per second. The sum of
this distance, volume and speed represent the average condition an Occupancy Sensor must
meet in order that the lights will not go off when a person is reading or writing while seated at
a desk.
D. Sensors will cover a minimum of 1500 square feet when mounted at 12 feet.
E. The sensors are designed to be ceiling mounted and not protrude more than 2 inches and
should blend in aesthetically with the space.
F. Each sensing technology shall have independent sensitivity adjustments and LED display.
G. Time Delay range shall be adjustable from 15 seconds to 15 minutes.
H. Sensors shall operate on 24 volts, 25 milliamps DC.
I. Sensor shall have an additional single pole, double throw isolated relay with Normally Open,
Normally Closed and Common outputs rated at 1 amp for 24 VDC. The isolated relay is for
use with HVAC control, Data Logging, and other control options.
J. Ultrasonic circuit shall be solid state, crystal controlled with signal processing filtering.
K. Ultrasonic receivers shall be temperature and humidity resistant with less than a 6dB shift in
the humidity range of 10% to 90% and less than a 6dB shift in the temperature range of -20o
to 60o C.
L. The ultrasonic frequency shall be 40 kHz + .006%.
M. Ceiling mount sensors shall provide a minor motion coverage range of 250 to 1300 square
feet with an overall 1/2 step coverage range from 500 to 2000 square feet.
N. All sensors shall be capable of operating normally with electronic ballast and PL lamp
systems.
O. All sensors shall be self-contained, crystal controlled ultrasonic or infrared occupancy
sensors located to provide coverage of 90 to 100% of the controlled area.
P. Coverage of sensors shall remain constant after sensitivity control has been set. No
automatic reduction shall occur in coverage due to the cycling of air conditioner or heating
fans.
Q. All sensors shall have readily accessible, user adjustable controls for time delay and
sensitivity. Controls shall be recessed in the sensor to limit tampering.
R. In the event of failure, a bypass manual "override on" shall be provided on each sensor.
When bypass is utilized, lighting shall remain on constantly or control shall divert to a wall
switch until sensor is replaced. This control shall be recessed in the sensor to prevent
tampering.
S. Ultrasonic operating frequency shall be crystal controlled to within plus or minus 0.005%
tolerance to assure reliable performance.
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
OCCUPANCY SENSED LIGHTING CONTROL 16550-4