Control & Instrumentation
Using good sense
Sensors demonstrate reliability under the most demanding conditions in a
brick factory
The production of bricks for house construction is hard work – explained factory manager Heinz Kunzmann. “We know best
For millennia the process of making moist clay into fired bricks, what requirements arise from the, in some cases, extreme
has placed considerable strain on men and their tools. Fire, air, process conditions. Furthermore, we want to put our know-how
earth and water have always needed to be mastered in this to work for us!”
process, but as manufacturing technology has developed so has For more than 20 years now he has relied on numerous,
the strain placed on automation sensors. For more than 20 varied sensor systems from Leuze electronic, from diffuse
years, Zeller Poroton has relied upon the robust design and high reflection light scanners to through-beam photoelectric sensors
quality of the sensors from Leuze electronic, to resist these and optical data transceivers as well as optical distance
extreme mechanical loads, plus soiling and thermal effects. measurement devices.
Zeller Poroton’s company history begins with the extraction of “The products function reliably, even under the hard
clay from sites near Alzenau, in the north of Bavaria in Germany. environmental conditions encountered in brick production,”
A family business founded in 1808, it has seen incredible confirmed Kunzmann. An example is the optical data
development in manufacturing methods in the past 200 years. transceivers that he mounted in 1990 in front of the ovens.
Today, the entire production sequence is controlled
electronically - from the blank to the final product, the individual Process reliability with performance reserve
bricks can be tracked, observed, and recorded in the central Leuze electronic’s through-beam photoelectric LSR 25B sensors
computer with all necessary batch data. “We developed and are used throughout an automation system for the production of
constructed many of the automatic processes ourselves,” ThermoPlan MZ8, which is a building brick that combines the
clay brick with rock wool.
A specially developed, stable sleeve of pure brick ceramic is filled
MORE OPTIONS IN
with high-quality rock wool elements and both securely bonded to
one another, to produce a product giving maximum thermal
LEVEL CONTROL
Our new Ultra range combine multiple
control functions in a single unit for tank
linearisation or volumetric conversion, pump
control, differential level or open channel
flow. Reduce unseen operating costs in solids
handling, waste water and processing
environments!
a71 Solids or liquids level measurement
a71 Linearisation of tank shapes
a71 Open channel flow measurement and data
logging
a71 Extensive pump control options
a71 ATEX approved transducers
a71 Simple set up
Of course, if you just want to
control levels to 40m (and
options of <1mm accuracy),
our ingenious controls will do
exactly that.
Pulsar Process Measurement Ltd.,
Malvern, Worcs WR14 1JJ UK Tel: +44 (0) 1684 891371
e: info@pulsar-pm.com www.pulsar-pm.com
ABOVE: The entire production sequence at Zeller is controlled
electronically. The signals necessary for this purpose are supplied by
sensors from Leuze electronic
38 Solids & Bulk Handling February 2010 www.solidsandbulk.co.uk
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