Page 54 - HUB-4 Magazine Issue 97

Quarrying
VEGA level transmitters in open-cast mining:
Precise measurement under harsh conditions with
80-GHz radar
Open-cast mining is faced with harsh conditions
which can push even the measurement
technology used to its limits. Fortunately,
Regnars can rely on the precise measurement
data to control their production processes.
Radar-based level transmitters from VEGA
provide the necessary transparency even under
difficult conditions of open cast mining,
guaranteeing efficiency and safety.
Melaphyre is a fine-grained basalt rock is used in mining as
raw material for building materials, concrete and road
aggregates. Melaphyre processing is a multi-stage process that
requires precise measurement at many points. At the
Tłumaczów open-cast mine operated by Regnars in Lower
Silesia, Poland, level measurement of the material in crushers,
mills and silos is extremely important. The ultrasonic
measuring instruments previously used for this purpose were
unreliable and unsuitable for the harsh operating conditions.
The solution to these problems came in the form of VEGA level
transmitters, in particular the VEGAPULS BASIC series.
How VEGA radar transmitters withstand the
harsh conditions in open-cast mining
The 80-GHz radar technology used by VEGA enables non-
contact measurement, keeping the transmitter at a safe
distance from the actual measuring point. This minimises the
risk of damage or interference from the production processes
themselves. Additionally, VEGA radar level sensors are
unaffected by temperature fluctuations, vacuum, or pressure,
and unaffected by dirt and dust.
Conditions like dust, vibration, stone chips and changing
weather conditions greatly affect ultrasonic transmitters cause
malfunctions. These such conditions are no problem for
VEGAPULS BASIC level transmitters. The instruments are
robust and hard-wearing, and operate continuously with high
accuracy. With 80 GHz radar sensors, you can focus the beam
precisely, allowing VEGA radar transmitters to measure even in
narrow shafts, through dust clouds or in vessels with internal
fixtures. Even dust-covered antennas have little effect on the
measuring result.
Endurance test for VEGA level transmitters
The VEGAPULS BASIC radar transmitters demonstrated their
strengths at Regnars. To ensure smooth operation, they
measure the level of melaphyre in the crushers and buffer
Reliable despite dust and dirt:
Compact VEGAPULS transmitters
are maintenance-free and deliver
precise measuring results in the
buffer silo around the clock.
VEGAPULS radar transmitters of the
BASIC series measure the level of
raw material in the crushers.
silos. Whether as wire-
connected VEGAPULS C 21
and VEGAPULS C 23 in the
silo or as VEGAPULS 11 and
VEGAPULS 31 with local
display, the transmitters
provide transparency and
keep the process running.
Simple mounting,
trouble-free
installation
VEGA offers a wide range of
accessories and various
mounting brackets alongside
intuitive setup and
commissioning to ensure
smooth into existing
processes.
To make it as easy as
possible to access measured
values and parameters, the
transmitters can be operated
both locally and remotely
with our free VEGA Tools
App and via Bluetooth
communication with a
smartphone or tablet. This
feature is particularly useful
for difficult to access areas,
like those located in Ex
hazardous zones or under
harsh environmental
conditions of open-cast
mining, such as in
Tłumaczów.
Conclusion
Regnars has been using VEGAPULS BASIC transmitters since
summer of 2023. The results speak for themselves: Trouble-free
and precise measurement of the required levels under difficult
conditions. VEGA level transmitters not only ensure the
required product quality by guaranteeing efficient, stable and
uninterrupted mine operation and ensuring safety above all.
| p54 |
www.hub-4.com March/April - Issue 97