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mkelectric.co.uk
490
Ultrasonic Sensors
Features
Active presence detection by ultrasonic technology
Passive photocell holds lights off in bright ambient conditions
5-15
Off delay in minutes following the last observed movement after which the
lights switch off
13m 6m
Detection pattern and range in metres under normal operating conditions
Dimensions
K4031
K4030
71mm
51mm
120mm
60mm
60
mm
83
mm
A sensor will fit to its own backplate or to
a standard 25mm switch sinking box.
Flush Plate & Clamp (K4078)
For simple flush mounting of detector to
suspended ceilings.
Max clamping distance – 25mm
20mm
back
entry
knockout
3 x side entry knockout
Rear View
Ultrasonic sensors utilise ultrasonic radar to monitor a space for movement. This
involves transmitting an ultrasound signal and examining the reflected signal for
frequency variations called “doppler shifts”. The transmitted signal is more quickly
dissipated in open space and squeezed out by constraining walls and ceilings. The
range of the detector also depends upon the type of movement being observed:
for example, walking activity can be observed at a greater distance than the slight
hand or body movement to be expected from a person working at a desk. Note that
detectors can see behind themselves slightly so must be inset in a storage aisle or
corridor application.
K4030 – Surface version
The back-box can be secured directly
to a hard surface or to a conduit stop
end box.
K4030 – Semi Flush version
Use a hole saw to drill a 76mm hole
into the ceiling tile. The flush ring is
designed to clamp the tile between its
two halves.
TECHNICAL SPECIFICATION
OPERATING VOLTAGE
230V 50Hz
MAXIMUM RECOMMENDED MOUNTING HEIGHT
5 metres
SWITCH CAPACITY
10 Amps – Incandescent lamps: 1500W max (230V)
TERMINAL CAPACITY
2 x 1.5mm or 1 x 2.5mm
WEIGHT
148g
TIME DELAY
5, 10 or 15 mins
POWER-UP CONDITION
select on or off
DETECTOR RANGE
adjustable
ON/OFF RANGES:
adjustable
ULTRASONIC FREQUENCY
40kHz
PHOTOCELL
adjustable 50 to 5000 lux
Description
Ultrasonic sensors are general purpose, fully
automatic, directional presence detectors with
photocell. They save energy by switching off
lights in unoccupied areas and by holding lights
off in occupied areas which have adequate
natural light. They use a specially developed
ultrasonic radar to monitor the controlled space
for movement. This radar is sensitive enough
to respond to even very small movements thus
ensuring that lights are sustained whenever the
controlled space is occupied. If no movement
has been detected for a pre-selected period, the
sensors switch the lights off until the next visitor
is detected.
The sensors control feature a movement
detector, photocell and 10 Amp load switching
element in one easily deployed housing. The
technology has been refined and improved
over many years of efficient, reliable service
in a wide range of industrial and commercial
environments. The latest designs use state-of-
the-art miniaturisation to pack the features into
a small, attractive yet rugged enclosure which
gives full field-of-view adjustment. Detectors are
available for surface or semi-flush mounting.
71mm
51mm
120mm
60mm
60
mm
83
mm
A sensor will fit t its own backplate or to
a standard 25mm switch sinking box.
Flush Plate & Clamp (K4078)
For simple flush ounting of detector to
suspended ceilings.
Max clamping distance – 25mm
20mm
back
entry
knockout
3 x side entry knockout
Rear View
Sensors Technical
WIRING DEVICES
WHITE