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] 2/6
www.sntag.ch
Technical specifications (continued) UPK 500 UPK 1000 UPK 2500 UPK 5000
Mass without cable g ~90 ~90 ~90 ~105
Protection class - IP67
Housing material - Polyamide glass-fibre reinforced
Electrical connection - M8 connector 4-pin or integrated cable
High power density
The outstanding feature of the UPK series is its high acoustic
power combined with small sensor size. This is achieved with
new optimized SONARANGE transducers, working at high
electrical voltages. Thus also small, moving and poorly
reflecting objects can be safely detected. Moreover the
sensors work also under high contamination. With a length of
<40mm the UPK sensors are the most compact ultrasonic
sensors for such high measuring ranges.
Thanks to the new transducer sealing made of Viton
®
the
UPK sensors are very robust against many environmental
influences. In particular, they are oil resistant, unlike many
other ultrasonic sensors.
AGC (Automatic Gain Control)
AGC is exclusively used in the UPK series. It adjusts
automatically the detection sensitivity to the reflected signal
intensity, allowing the detection of very small objects.
Temperature compensation
The temperature coefficients of the electronics and the
transducer are compensated thanks to a special circuit.
Choice of model
The UPK versions differ particularly by their different
measuring ranges. The following versions are available for
each measuring range:
• Fixed analogue output and 1 adjustable binary output
• 2 individually adjustable binary outputs
• Analogue output with adjustable zero and FS
The analogue outputs are available with 0...10V or 4...20mA
and furthermore with inverted analogue outputs 10...0V or
20...4mA. Other versions are available on demand.
Binary outputs
Binary outputs become active, i.e. they switch on or off,
when a scanned object falls below the set distance or if it
exceeds it. Each switch point has a hysteresis (see technical
specifications). This is the difference between the switch on
and switch off point during approach or departure. Hysteresis
is necessary for an appropriate switching behaviour.
Synchronisation input (Y versions)
The ultrasonic signals can disturb each other when several
sensors are focused on he same target or when sensors are
mounted too close together. This can be avoided by
synchronizing the sending pulses. The synchronisation leads
of all sensors are connected to each other by shielded cables
as short as possible. Since all sensors send then
simultaneously, the current consumption increases heavily.
Unused synchronisation leads shall be isolated.
Blind range
The lower detection range is called blind range. It is typical
for ultrasonic sensors. In the blind range no distance
measurement is possible however the pure function as a
proximity switch (binary output) is possible in the blind range
with certain restrictions (only bigger objects).
Inclination angle of object
Smooth surfaces can be detected up to an inclination angle
of 10°. However rough and structured (granular) surfaces
can be detected up to much higher angles.
Cable
All standard versions have a 4-pin M8 connector for screw or
snap-on connection. The Y-versions with synchronisation
input have a shielded integrated cable (l=2m). Special cable
lengths and integrated cables instead of connectors are
available on demand. The cable should be kept as short as
possible. Maximum cable length is approx. 100m, if cross
section area is appropriate (peak current <100mA, use
470µF/35V backup capacitor close to sensor). The cable
should not be mounted parallel or close to high current
cables.
Cables for connection to the M8 connector have to be
ordered separately.