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New series high performance sensors
Eaton
has introduced its new E75/E76 series
of high performance photoelectric sensors.
Sensors with field-adjustable background
suppression and a considerably extended
sensing range are also being released for
the first time. The key to this is the Intel-
liView technology. It enables a number of
new sensing techniques for colour, contrast
and luminescence sensing for particularly
demanding applications requiring increased
precision over large distances in challenging
conditions. The high precision combined
with the improved background suppression
make the E75/76 sensor series into a flexible,
high performance solution for a wide range
of applications.Through the small number
of sensing errors, the devices contribute
even in the most difficult environments to
increasing the productivity of machines
and plants. In the E75/76 series, Eaton is
presenting a photoelectric sensor with
field-adjustable background suppression. It
detects objects precisely at a distance of up
to 190 cm and at the same time suppresses
for example container edges. Besides the
broad application range, the sensor stands
out on account of its simple installation.
This enables users to put the device easily
into operation and adapt automatically to
the individual requirements at the site of
installation. Eaton has also developed laser
distance sensors with increased sensing
depth, especially for the E75/E76 IntelliView
series. These distance sensors output a
signal from 0 - 10 V which changes within
the operating range proportionally to the
distance between the face of the sensor
and the target.The integrated class II laser
detects objects in a range between 0,3 and
4 m. In addition to analogue outputs, the
sensors are provided with two PNP outputs
that can be programmed so that they switch
at the set distances. Eaton's series E75/
E76 photoelectric sensors are divided into
colour, contrast and luminescence sensors.
The colour sensors feature a new ‘chroma-
ticity plus intensity’ algorithm.This provides
increased sensitivity for colour tone vari-
ations and improves the differentiation of
grayscale tones.
Enquiries: Dean Nurden. Eaton Electric
South Africa.Tel. 11 874 4315 or email
DeanNurden@Eaton.comLatest in radar sensors for bulk solids
January saw the launch of
VEGA
’s latest
offering in radar sensors to the market (see
‘social engineers' page 43).
The level transmitter operates at a fre-
quency of 79 GHz, which allows a consid-
erably better focusing of the transmitted
signal.This is a distinct improvement on the
previous model which operated at 26 GHz.
In containers and silos with many internal
obstructions, this enhanced focusing helps
to reduce the influence of background
‘noise’. This means that reliable measure-
ment is also possible even with complex
internal structures.
New microwave components allow the
sensor to detect even the smallest reflected
signals. Products such as plastic powders or
wood chips, which until recently were very
difficult to measure because of their poor
reflective properties can now be measured
with very high reliability.This considerably
extends the application range for radar
technology in the bulk solids industry and
opens up new application areas as well.
With a measuring range of up to 120 metres
and an accuracy of +/- 5 mm, the sensor has
sufficient performance capability even for
the out of the ordinary tasks such as level
gauging inmine shafts or distancemeasure-
ment on conveyor systems. Despite its large
measuring range, the sensor is also an ideal
solution for small hoppers or containers;
the different antenna designs enable the
optimum solution to meet the application
needs. Completely unaffected by dirt and
build-up, the innovative lens antenna guar-
antees maintenance-free operation even in
harsh environments. To make set-up and
commissioning easier, an intelligent App
for smartphones has been developed. It al-
lows quick and easy alignment of the sensor
on a swivel holder. By entering the vessel
height and the distance from the discharge
opening, the App automatically calculates
the optimum tilt angle.
Enquiries: Chantal Groom on 011 795 3249 or
Clemens Hengstler, VEGA
product manager (radar)
demonstrates VEGA's new
radar sensors for bulk solids.
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February ‘15
Electricity+Control