Our Application Handbook contains a Guidance Chart for selecting a suitable level measurement instrument for a given medium and our readers can read more than 50 application case studies and many short references from all around the World.
NIVELCO’s representative in Brazil, NIVETEC Instrumentação e Controle recently won an instrumentation project in the petrochemical industry. The high requirements about reliability and the hazardous environment needed very precise instrument selection.
The measurement task was to continuously monitor the level in 10 pcs outside lying cylindrical tanks where the highly flammable liquids are stored and to control the input and output batch of the stored products automatically.
The supplied ultrasonic level transmitters were the EasyTREK SPB-370-8 Ex with PVDF housing having 4-20 mA + HART output.
All the EasyTREK transmitters’ analogue 4-20 mA output signals are sent to a central PLC that monitors whether the tank was stocked with the right amount of chemical products, and all the measurement datas are continuously logged.
Our customer the AVIMIX APA S.R.L. company in Bucharest establish a grain drying and storage facility near the Hungarian border in the town of Sanislau.
The task was to provide level and temperature measurement system for four grain silos. In addition local display in the central control room and in an office computer was also required along with data-logging.
Designing of the cable-architecture and the cable routes for the proper communication was also the part of our task. After the installation of the measurement system there was an intensive one month testing period while all the silos were filled with grains and the logged measurement data were investigated much more frequently than the planned. The end-user was very satisfied with the operation of the system.
2014 - Sewage works, Lebanon, USA, :: Distributor: Aqua Technology Group
The wastewater operations for the City of Leba¬non, Ohio had an existing flow meter that had failed after just two years of operation. They needed a reli¬able way to measure flow going across both v-notch weirs and add flow pacing to the other process controls.
Therefore, in the field of public utilities new IP68 rated EasyTREK SPA-38N-4 integrated ultrasonic level transmitters with the MultiCONT universal display and controller was provided for the flow meter and level measure¬ment.
The units use HART digital communication to connect the MultiCONT multi-channel process controller. The MultiCONT is able to provide remote programming and display measurement results.
• EasyTREK SPA-38N-4
2014 - Brewery, Ohio, USA, :: Distributor: Aqua Technology Group
NIVELCO representatives from Aqua Technology Group worked with a new startup brewery to provide a comprehensive flow and monitoring solution.
Wastewater from a brewery may be discharged into city sewer system after the wastewater has undergone some treatment. The city required 5% or better accuracy throughout a wide range of flows.
Aqua Technology Group provided a new ultrasonic flow meter and level measurement solution using EasyTREK SPA-39N-4 type ultrasonic level transmitters with the MultiCONT universal display and controller. A 4 inch Palmer-Bowlus flume with approach section was provided as the primary flow device. The system was setup and calibrated to display a separate totalizer for both the brewery and the city sewer utility. The data is logged internally in the NIVELCO flow meter system and made available to the city when required.
In the water / wastewater industry the reduction of the odour impact and the corrosion of the sewer system is an important task.
To prevent the formation of hydrogen sulphide gas, our partner Katalin Novum Ltd. has developed a chemical feed system, which can be installed next to the pumping stations.
This is achieved by various chemicals, such as calcium-nitrate or solutions of iron (III)-chloride.
For continuous level measurement of the chemicals they are using EasyTREK SPA integrated ultrasonic level transmitters, which can reliably measure the level of various chemicals and suitable for the existing FRT-4 surveillance monitoring system.
In 2014 a total of 10 systems including NIVELCO’s EasyTREK transmitters have been installed in the facilities of Sopron Waterworks, Budapest Sewage Works and the Heves Region Waterworks.
In the so-called contact manufacturing process of sulphuric acid continuous level measurement solution is needed for the mixing tank where oleum is diluted with water. The conditions in the tank were very challenging. There is the very aggressive atmosphere with strong fumes added with level fluctuations and not to mention the high humidity. The MicroTREK Guided Wave Radar is perfectly protected against any chemical reaction because all parts are covered with PFA/FEP coating providing long-term reliable level measurement.
2014 - Military Base, Shorabak, Afghanistan, :: Distributor: NIVELCO USA LLC.
The wastewater treatment plant located in Shorabak, Afghanistan is to be operated and maintained by Afghan National Army personnel, which means that the installed level measurement equipment has
to be easy to operate and durable in a difficult environment. The EasyTREK integrated ultrasonic level transmitter was selected due to the IP68 rated construction and long durability proven in many other field installations.
The instrumentation task was to provide automatic flow control system at the inlet and outlet of the sewage treatment plant allowing storage and collection of data with notebook. The required energy for the open channel ultrasonic flow measurement is provided by solar panels.
2014 - Department of Radiology, University of Pécs, Hungary,
In the medical practice slightly radioactive materials are used in many diagnostic procedures. These materials are depleted after the tests from the studied subjects for example with the urine, which is then collected into containers. The radioactive wastewater can be let out into the canal system only after the expiry of the half-life. Until that point it is stored in a fully automated tanks system, where the level measurement is done by EasyTREK integrated ultrasonic level transmitters. The most important requirement is the security, this is why the integrated design has been chosen from the highly reliable and HART-capable (remote programmable) NIVELCO ultrasonic transmitter family.
2014 - Paint Shop of Automotive Industry, India, :: Distributor: NIVELCO India
Automotive Industry Paint Shop for re-circulation of Scrubber water it is important to maintain constant water level in the sludge pit. NIVELCO’s EchoTREK SGV-380-4 ultrasonic level transmitters
(with PVDF transducer and HART communication) are ideal choice for this task.
2014 - Van Schelven B.V., The Netherlands, :: Distributor: Nivotherm B.V.
Level measurement in the 10 meter (33 feet) high stainless steel edible oil tanks with 2-wire EchoTREK ultrasonic level transmitters completed with a local
displaying with MultiCONT process controller unit at the bottom of the tanks.
Instrumentation for chemical storage tanks that needed to be continuously measured with a high level alarm indication and completed with a complex controlling system. The outside horizontal cylindrical tanks and are regarded as ATEX, hazardous environment, therefore all the elements of the measurement system must be intrinsically safe
• MicroTREK HTA-430-8 Ex - 6 pcs
• UNICONT PGK-301-A Ex - 6 pcs
• UNICONT PMG-411-1 - 6 pcs
• NIVOSWITCH RCM-401-8 Ex - 6 pcs
• UNICONT PKK-312-8 Ex - 6 pcs
• NIPOWER PPK-331-1 - 4 pcs
2014 - George Paris Company LLC, USA, :: Distributor: NIVELCO USA LLC.
A well-know American beautycare,
cosmetics and all-natural home and body cleansing agents producer uses a 2” (P2-sized) PARSHALL flume outside their fence to measure the effluent sewage. To perform open channel flow measurement an
EchoTREK compact ultrasonic level transmitter was installed with a custom-designed meter panel providing a digital display of cubic feet / sec. and cubic feet total.
Our partner is a Hungarian facility of a leading European manufacturer of polystyrene extruded foam insulation boards where the raw material storage tanks needed to be continuously measured. The customer is interested about the volume in the two tanks and it is calculated from the measured level value provided by coaxial probe type MicroTREK guided wave radars. The measurement data is displayed by UNICONT PMM units which are responsible for the batch controlling. There is an additional high fail-safe protection done by a NIVOSWITCH mini compact vibrating fork level switch. The complete measurement system has intrinsically safe protection.
• MicroTREK HTA-426-8 Ex - 2 pcs
• NIVOSWITCH RCM-405-8 Ex - 1 pc
• UNICONT PMM-311-1 - 2 pcs
NIVELCO solid level measurement instrumentation can be employed in practically all phases of limestone processing. The EchoTREK STD / EasyTREK SCD ultrasonic or the MicroTREK TDR level transmitters are ideal choice for accurate level measurement in extremely harsh, dusty circumstances.
Prior to sealing the green peas and corn cans the food is filled with a special juice that provides the flavour of the product. The storage and the mixing tanks containing the filling liquid are measured by MicroTREK guided wave radars.
Continuous level measurement of different pH and density liquids for example high purity water, washing
liquid, and fermentation liquid with high temperature MicroTREK guided wave radar level transmitter, meeting high hygienic requirements in the pharmaceutical environment.
2013 - Fenes Valley hydroelectric power station, Romania, :: Distributor: NIVELCO Tehnica Masurarii
Flow metering solution for small hydroelectric power stations. The water which drives the turbines is measured by insertion type electromagnetic flowmeters. In order to provide be minimum required water amount in the stream an open channel flowmeter system with EasyTREK ultrasonic level transmitter, NIVOSONAR GPA Parshall flume and MultiCONT process controller is used. This system controls a dam gate (open-close) to provide the specified minimum yield. This water volume should provide proper living space for the water creatures in the river downstream under the dam.
The sewage shafts at the Miskolc Water Works are equipped with crushers in order to pump protection. The crushers grind the bigger solid particles of the sewage and the incoming water reaches the pumps when it crossed the crusher. Originally the crushers were operating all the time, mostly unnecessarily. Now the grinder acts like a filter screen when not operating. When the contaminations start to build-up in front of the crusher the water level will increase inside the shaft. The water level is monitored by an EasyTREK ultrasonic level transmitter. The measured value is displayed on a UNICONT PMG unit and the crusher equipment is controlled by the UNICONT PMG. When the water level raises the crusher will start, grinds the driftwoods therefore the water level will decrease and then the controller stops the crusher. Thanks to this controlling solution the crusher is operating only if necessary resulting great energy savings.
In 2012 the South-Pest wastewater treatment plant of Budapest Sewage Works established a new treatment technology called Organica Food-Chain Reactor.
On the surface of the activated sludge basins there are vegetation which roots are growing deep into the biological reactors. The primary role of the plants root system is providing large living space to microorganisms which are decomposing organic materials.
The water level control of the activated sludge basins has became necessary to be able to transfer the proper water amount to the biological stage, what is done with a motorized floodgate.
The water level is continuously measured by an EasyTREK SPA-360-4 type integrated ultrasonic level transmitter. The output signal of the instrument transmitted to the PLC controlling the activated sludge basins floodgates.
Coal is very common material used in many branches of industry like power generation, coke production, chemical and many, many others. In a typical coal burned power plant the EasyTREK SCD is an ideal choice for coal level measurement applications.
In the factory of the Romanian animal feed producer there are overall 29 closed tanks filled with various grain flours, soybean flour, sunflower flour, and other additives to be measured. Level measurement in such an extreme dusty environment can be done with great reliability thanks to the EasyTREK SCD ultrasonic level transmitters.
• EasyTREK SCD-33J-8 Ex - 14 pcs
• EasyTREK SCD-34J-8 Ex - 15 pcs
2012 - Mangalore diary plant, India, :: Distributor: NIVELCO India
In the diary plant in Mangalore, India
there are three milk storage tanks
with 15000 litre capacity which should be continuously measured.
The preferred solution for this applications was non-contact measurement, NIVELCO offered EchoTREK ultrasonic level transmitters.
Belgosuc produces semi-finished products based on natural sugars. They produce glycerine, liquid sugars, and syrups. The following challenges had to be solved in the measurement of 4 tanks: very sticky media, high hygienic requirements, high temperature CIP (Cleaning in Place) process. The solution is the EchoTREK SGS-362-2 with stainless steel transducer face.
• EchoTREK SGS-362-2
2012 - Coca-Cola HBC Hungary Kft, Dunaharaszti,
Disinfection is a very important step in the food & beverage industry where the CIP process is used for this purpose. The CIP process uses concentrated (37%) hydrochloric acid, the acid storage tank is equipped with EasyTREK SPA integrated ultrasonic level transmitter. The instrument has excellent chemical resistance against aggressive media and it measures reliably through the acid vapour.
The urban waste water treatment plant in Portugal use EasyTREK ultrasonic level transmitters for open channel flow measurement and level measurement in the concrete open tanks. The water quality is monitored by AnaCONT ORP (oxidation / reduction potential) and DO (dissolved oxygen) transmitters. The transmitters are connected to MultiCONT process controllers .
Győr Distillery Co. Ltd. produces ethanols in high quality and they use EchoTREK compact ultrasonic level transmitter in the alkaline tank of the fermentation process. The measured values are displayed on the outside UNICONT panel instrument. The overfill protection is performed by PFA coated NIVOSWITCH vibrating fork level switch.
The major instrumentation investment project of Agrokémia Sellye chemical plant in 2011-2012 was continued with the measurement of buffer tanks. The pesticide containing tanks are measured by guided wave level transmitters with 4mm diameter cable probe. The avaiable space above these inside tanks is very small, so rigid rod probe versions cannot be mounted.
• MicroTREK HTK-504-4 - 3 pcs
2012 - Water Works, Bodorfa, Hungary,
Level measurement in outside sewage stations. The water level changes rapidly in this plant and one of the measurement place is very narrow. The EasyTREKs measure perfectly both inside and outside.
EasyTREK integrated ultrasonic level transmitters measure the level in 13 storage silos of various dusty aggregates. The transmitters are connected to MultiCONT multichannel process controllers which communicates by MODBUS RTU protocol with the PLC.
2012 - United Arab Emirates, Dubai, :: Distributor: Dutco Tennant LLC.
Oil tank park in Dubai is equipped with MicroTREK guided radar level transmitters and THERMOPOINT multipoint temperature transmitters. The system is monitored by NIVISION process visualization software.
In this application, we measure the Overflow with EasyTREK SPA ultrasonic integrated transmitter connected to a MultiCONT PEW multichannel controller, powered by a battery and reloaded by a solar panel. A 20-point linearization table are programmed in the MultiCONT to convert level to flow with Manning Strickler Formula (relation between level and flow in a circular pipe). 4-20 mA output and pulse relay are wired to a small GSM transmitter. All units are powered by the solar panel.
NIVELCO instruments are used in the pesticide production of Agrokémia Sellye Zrt. All transmitters and infra-red sensors are connected to the controlling server. This computer is running a NIVISION process visualization software which enables the unified data management of the measurement values, visual displaying of each process and batch tracking with receipt logging.
The NT Food Kft. in Kiskunfélegyháza
produces hot pressed, extracted, raw
and refined sunflower cooking oil, their best-known brand in Hungary is
called Kunsági Éden. The company is
the largest Hungarian owned edible
oil producer for over 15 years. The implemented measurement system monitors the batch numbers assigned to the raw materials during
the whole manufacturing process from the input seed state to the bottled oil state.
Water basins in the wastewater treatment plant of Bileća city is equipped with EasyTREK integrated ultrasonic level transmitters. The measured level values are displayed on UNICONT PMM-300 universal controllers and a SCADA application.
Dry-run protection of the pumps is prevented using NIVOFLOAT NLN-120 float level switches.
Mediterrán Zrt. in Bóly manufactures important \"element\" of building industry, the roof tile. Production of concrete tiles needs many types of raw materials, such as sand, cement, dyes, and auxiliary materials which are stored in silos. These silos are measured by MicroTREK guided microwave level transmitters with 8mm cable probe. High fail-safe monitoring is done by NIVOROTA rotary paddle level switches.
A biogas plant next to Szeged uses underground tanks to store the condense water of the fermentors. The level of these tanks are measured with EchoTREK ultrasonic level transmitters. High level alarm indication is done by NIVOFLOAT tilting float switches. Ex isolation and power supply is provided by UNICONT PGK intrinsically safe isolator power supply modules.
• EchoTREK SEA-362-8 Ex - 2pcs
• UNICONT PGK-301-B Ex - 2pcs
• NIVOFLOAT NWP-110-1 - 2pcs
2011 - NT Élelmiszer Kft, Kiskunfélegyháza, Hungary,
Main step of edible oil production is to dissolve the remaining vegetable oil from the crushed and pressed vegetable seeds. This process is done in the extracting tank with chemical solvent extracts, such as hexane. The level of the highly explosive hexane is performed in a bypass tube with guided microwave transmitters. The dosing control is based on the transmitted level values. The special characteristics of the measurement is that dielectric constant of hexane is only 1.9.
• MicroTREK HTR-410-8 - 3pcs
2011 - Sewage works of Vienna, Austria, :: Distributor: Göth Solutions
Sewage works of Vienna use NIVELCO instruments in the drain-system under Karlsplatz. The water level is monitored with EasyTREK integrated ultrasonic transmitters and MultiCONT process controllers.
• EasyTREK SPA-380-8 Ex
• MultiCONT PRC-220-6 Ex
• UNICONT PJK-102-4
• UNICONT PJK-120-4
Blanching is a cooking process wherein the vegetable is plunged into boiling water, removed after a brief, timed interval, and finally placed under cold water as a heat treatment. After the blanching the podded green peas are collected in hoppers then transferred into the dosing machine and finally it is filled with a special juice that provides the flavour of the product prior to sealing the cans. The rapidly fluctuating and wave-like level in the hoppers is measured by twin-rod probe MicroTREK Guided Wave Radars.
The high temperature version MicroTREK guided wave level transmitters with mono rod probe measure bitumen in a feeding tank. The instrument operates with high reliability in the high temperature (180°C) environment and sticky medium application.
The high temperature version MicroTREK guided wave level transmitters with mono-rod probe measure demineralized water in a feed tank of a steam boiler. The instrument operates with reliability in the steamy environment application.
• MicroTREK HPR-418-4
2010 - Banat, Serbia, :: Distributor: INDAS
The 21 meter tall sunflower seeds storage silos are equipped with 8mm cable probe version MicroTREK guided microwave level transmitter.
• MicroTREK HBN-421-4
2010 - Maxima, Serbia, :: Distributor: INDAS
The 10 meter tall calcium oxide (burnt lime) storage silo is equipped with 8mm cable probe version MicroTREK guided microwave level transmitter. Despite the intensive dust during the pneumatic filling of the silo, the measurement is reliable.
• MicroTREK HBN-410-4
2010 - Tarkett, Serbia, :: Distributor: INDAS
The 10 meter tall calcium carbonate storage silo is equipped with 8mm cable probe version MicroTREK guided microwave level transmitter. Despite the intensive dust during the pneumatic filling of the silo, the measurement is reliable.
Measurement of sand, cement and different sized gravel in 10 m tall silos in extreme dusty environment. Stones are loaded directly into the silos besides quite high acoustic noises and strong vibrations.
Level measurement of special technologic liquid - so called drilling mud with ultrasonic and microsonic level transmitters in storage silos. Low and high level switching of the silos are performed with float level switches.
Measurement solution in a limestone screening plant with ultrasonic level transmitter for solids. Main reason of the process automation was to enhance work conditions reducing human activity in the extreme dusty environment.
2010 - Steel-works in Dunaújváros, Hungary - Coke-works,
Measurement of different types of coal powders in extreme dusty and ’Dust Ex’ environment with ultrasonic level transmitters. After separation of the finished product, level switch is performed with Ex-type vibrating forks.
• EchoTREK SBD-31J-8 Ex 14 pcs
• NIVOSWITCH RLH-304-E Ex 4 pcs
Technological equipments used in processes of water treatment work correctly only under appropriate conditions of flow, level, pressure and temperature. That is why measurement and control of these parameters is very important.
Accurate and linearized level measurement of different fuels in service stations using guided microwave radars. The system is completed with MultiCONT controllers and Nivision software. The advantage of Nivision supervision is the WEB access.
• 60pcs MicroTREK HTT-410-8
• 30pcs MultiCONT PRW-1RA-6
• NIVISION process visualization software with WEB access
2009 - Budafoki Baromfifeldolgozó Kft., Budapest, Hungary,
Process visualization of the water system of the plant with Nivision software. Level measurement of the wells is done by Nivopress N hydrostatic pressure transmitters. Level in the water tower and water tanks is measured by Echotrek ultrasonic level transmitter. Large distance data transmission is done by wireless communication system.
2008 - Budapest Sewage Works Ltd., Hungary, Budapest,
To overcome the difficulties of measuring sewage level in very narrow shafts an ultrasonic level transmitter has been installed in one of these miscellaneous pump stations of the Hungarian capital. The transmitter constantly measures sewage level and controls the pumps. Remote programming and testing can be done from the control room via HART communication.
• EasyTREK SPA-340-4
2008 - Gran Milano SpA, Milano, Italy, :: Distributor: Isoil Industria SpA
Continuous level measuring of sugar and flour in tanks with 6 and 12m heigth with MicroTREK TDR level transmitters. Signal processing is done by MultiCONT PRW process controller.
• UNICONT PJK
2008 - Holcim Hungária Zrt., Lábatlan, Hungary,
Level measuring of slurry mixer silo of the cement plant of Lábatlan with Echotrek ultrasonic level transmitter. Local indication is done by Unicont PDF loop indicator. The instrument is installed to a rotating bridge and operates in extreme conditions.
• EchoTREK STA-360-4
• UNICONT PDF-401-1
2008 - Holcim Hungária Zrt., Lábatlan, Hungary,
Sensing of the rotation of the furnace of the cement burner with Microsonar ultrasonic proximity sensors.
The Unicont PMM controller processes the output signal and controls the apparatus.
• MICROSONAR UTP-261-4
• UNICONT PMM-312-1
2008 - Zöldolaj Zrt., Halmajugra, Hungary,
Continuous level measuring and control of raw vegetable oil used in biodiesel production with guided radar level transmitters. The 4..20mA outputs of the transmitters are processed by PLC control system.
• MicroTREK HTK 201-4 : 4 pcs.
2008 - Ózdi Acélművek Kft., Ózd, Hungary,
Continuous level measuring and control of lumpy auxiliary metallurgic materials. Signal processing and control is done by a process control system on PC.
Level measuring and control of the grid filter and pump of the sewage plant of the local waterworks.
• EasyTREK SPA 340-4
2008 - Chandigarh, India, :: Distributor: Nivelco India Pvt.
Sugar crystallization pan application: The application is very tricky since the sugar syrup in the pan (tank) is vacuumised at 600–700 mmHg while operating temperature is held at around 80°C. The syrup is continuously stirred by an 40-50 rpm agitator. Due to the evaporation and addition of crystal seeds the syrup if finally converted into crystals.
Measured medium: solid material, cement
Measuring range: 13 m
Special requirements: none
• MicroTREK - guided Radar
2005 - Almex 96 KFT., Békéscsaba, Hungary,
EchoTREK transmitters measure the lumpy tomato in a ketchup
factory. The grinded tomato juice and then the processed pure juice
are measured with NIVOPRESS D hydrostatic level transmitters placed
in the bottom of the tanks. The measured values are displayed with
UNICONT PMG indicators.
Level measurement of plastic powder and granulates H=8 and 16m
• 10 X SID-330
• 5 X SMW-368
2005 - Sweden , :: Distributor: EXAC Industriteknik AB
The speciality of this quarry application is that one of the EchoTREKs shoots direct down in the crusher, the other one shoots through the chain curtain and measures the amount of stones on the feeder. The satisfied user is Skanska Quarry.
Parameter P05 = 4m
• EchoTREK STD-34J
2005 - São Paulo state capital, Brasil, :: Distributor: Nivetec
80 Silos of Japanese animal food plant equipped with NIVELCO manufactured EchoTREK level transmitters.
Smart solution of a challenging level measurement task for grains, ground grain derivatives, chemicals and animal food pellets in extremely slim silos with ultrasonic transmitters involving HART multidrop system.
Application of ultrasonic sensors; level measurement of solids. Stone quarry near to Opatovice town.
• EchoTREK STD-34J-1
2004 - Cement plant, Hungary,
In a cement factory near Budapest EasyTREK SCD ultrasonic level transmitters are used for continuous level measurement of two 20 m (65.5 ft) high limestone grit storage silos. Additional NIVOCONT R Vibrating Rod level switches with cable extension are responsible for high fail-safe indication. Despite the harsh, heavy-duty environment the instruments meet the requirements and perform reliable operation.
2004 - Wopfinger at Wopfing, Austria, :: Distributor: CONTRA Vertriebsgesellschaft mbH
22 silos with stone powders, MicroTREK 2-wire guided radar level transmitter used really as 4-wire.
Measuring range: 13 m
Probe: d=8 mm mono cable
The units are equipped with external power supply. (Actually 4-wire instrument with active 4-20 mA + HART output)
• 22 pieces of MicroTREK 2-wire guided radar level transmitter
40 pcs of MICROSONAR URS-213 ultrasonic distance sensors monitor the lateral motion of a conveyor belt.
• MICROSONAR URS-213
2004 - ÉMV Incineration plant in Sajóbábony, Hungary,
Continuous level gauging of hazardous material storage containers using EchoTREK SEB-365-6 Ex and SEB-380-6 Ex ultrasonic level transmitters and upper alarm level switching using NIVOSWITCH RCM-402-8Ex vibrating fork level switches.
• EchoTREK SEB-365-6 Ex
• EchoTREK SEB-380-6 Ex
• NIVOSWITCH RCM-402-8 Ex
2004 - Sewage works, Kenézlő, Hungary,
Level control in sewage pit using EasyTREK SCA-360 transmitter and flow measurement with a V notch weir using EasyTREK-380 ultrasonic level transmitter.
• EasyTREK SCA-360
• EasyTREK SPA-380
2004 - Bazalt Középkő Kőbányák, Uzsa, Hungary,
A quarry application using ultrasonic level transmitters to control feeding the stone crushers.