Datasheet

SONARANGE UPK 11.13 e
This Information corresponds to the current state of knowledge. SNT reserves the right to make technical changes. Do not use these products in any application
where failure of the product could result in personal injury. Liability for consequential damage resulting from the use of SNT products is excluded.
SNT Sensortechnik AG, Hammerstrasse 6, CH-8180 Bülach, Switzerland, Phone [phone], Fax [phone], [e-mail] 3/6
www.sntag.ch
Mounting
The UPK sensors have 4 threaded holes on their rear side of
the housing. They can be mounted with M4 screws. 4x
M4x20 screws are provided with each sensor. The UPK 5000
versions shall be mounted with the damping rubber bush
(included) in order to avoid acoustic cross talk. An optional
mounting bracket Type UPM made of glass fibre reinforced
plastic can be ordered.
Power supply
Ideally a power supply is used exclusively for the sensor. The
power supply must be able to supply the short peak current
of 80…100mA for each sensor. In order to avoid
disturbances the part where the sensor is mounted must be
correctly earthed.
Detection beams
The detection beam of an ultrasonic sensor generally has the
shape of a cone. The size depends on the target and its
sound reflecting characteristics. Small and less reflective
objects result in a smaller cone (narrower and shorter).
Larger objects and those with surfaces which are not
perpendicular to the central axis can expand the cone. The
exact cone shape and size can be determined only at the
object itself. No disturbing objects must be between the
sensor and the target within the cone. Otherwise the sensor
would detect the disturbing object instead of the desired
target. Below are some typical cone shapes for each sensor
type. The solid line shows the range, where the sensor
detects flat objects of size A4 (UPK 500/1000) or A3 (UPK
2500/5000) which are perpendicular to the sensor axis. In the
dotted range the sensor UPK 500/1000 detects round objects
(Ø10mm). For UPK 2500/5000 the dotted range is the area
where the sensor detects only large and very well reflecting
objects. Furthermore the size of the detection beam is
influenced by air temperature and humidity. The colder and
dryer the air, the larger is the beam. The extended
measuring range (above nominal range) is only available
with the POR versions.
No other ultrasonic sensor working at the same frequency
should be within the sensing cone, close to it or opposite to it.
This is only allowed when using the synchronisation option
(Y-versions).
UPK 500 UPK 1000 UPK 2500 UPK 5000
200m m
300m m
400m m
500m m
100m m
0m m
200m m
600m m
700m m
800m m
200m m
400m m
600m m
800m m
1000m m
0m m
300 m m
1200m m
1400m m
1000m m
1500m m
2000m m
2500m m
500m m
0m m
500m m
3000m m
3500m m
4000m m
1000mm
2000mm
0m m
40 00 m m
5000 mm
3000mm
6000mm
7000mm
8000 mm
1000 mm