sensor UPF-A 40 FI 24 CA

sensor   UPF-A 40 FI 24 CA

SONARANGE UPK 09.05e 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, Bahnhofstrasse 25, CH-8153 Rümlang, Switzerland, Phone +41 44 817 29 22, Fax +41 44 817 10 83, info@sntag.ch 3/6 www.sntag.ch Mounting The UPK sensors have 4 M4 threaded holes on their rear side of the housing. They can be mounted with 2..4 M4 screws. 4 screws M4x20 are scope of delivery. Optionally a 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 has the shape of a cone. The size depends on the target and its sound reflecting characteristics. Small and more badly reflecting objects result in a smaller cone (narrower and shorter). Bigger 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 typical cone shapes are shown 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 shall be within the cone or close to it or opposite to it. This is only allowed when using the synchronisation option (Yversions)