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| Sonar - SIMATIC Sensors - Siemens | 11/23/2008 9:30 PM | ||
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Sonar Proximity Switches SIMATIC PXS
From 2.5 cm to 10 m – They Hear Everything!
Our
sonar proximity switches sense objects of varying materials, shapes, colors or
consistencies with absolute precision, flexibility and reliability. The application
potential is almost unlimited. Whether recording fill levels or heights, measuring
distances or counting bottles, our switches recognize objects with a wide range
of properties from a distance of 2.5 cm to 10 m, regardless whether they
are liquid, solid, powdery or even transparent. Surface conditions are irrelevant
as well – they can be rough or smooth, clean or dirty, wet or dry. Our
proximity switches feature maximum ruggedness and resistance against dirt, vibration
and extraneous light or sound.
Highlights
Millimeter-accurate measurement
Color and material-independent, even transparent objects
Individual parameter setting
Small, compact housing
Very high degree of repeat accuracy
UL/CSA approvals
ATEX approval for the application in the explosion-hazard
area zone 2/22 (SIMATIC PXS810)
Insensitive to temperature, noise, light and water
Sensors with IO-Link
Function
The Sonar proximity switches only operate through the medium of air and can detect
any objects that reflect ultrasound. They emit ultrasonic pulses cyclically.
When an object reflects these pulses, the resulting echo is received and converted
into an electrical signal. The incoming echo is detected in accordance with
its intensity which, in turn, is dependent on the distance between the object
and the Sonar proximity switch. Sonar proximity switches operate according to
the echo propagation principle, i.e. the time difference between the emitted
pulse and the echo pulse is evaluated. The design of the sensor causes the ultrasonic
beam to be emitted in the shape of a cone.Temperature compensation
The compact proximity switches type M30 K2, M30 K3 and M18 are fitted with temperature
sensors and a compensation circuit that equalizes changes in operating distances
caused by temperature changes.Synchronization
In compact ranges M30 K2, M30 K3 and M18, several devices can be synchronized
with each other by simply interconnecting the synchronization outputs of the
devices. Up to 10 devices can be synchronized (or 6 devices in the case of compact
range 0). This allows the sensors to be mounted extremely close to each
other in many cases without causing mutual interference.Programming with SONPROG
Programming the devices of the compact ranges M18, M30 K2
and M30 K3
Possible settings include: - Operating range beginning and end - Analog range beginning and end - Switching hysteresis - Mean value generation - Multiplex mode - NO/NC contact switchover |