With the following products our customer has solved this measurement task optimally:
Building, Cement & Quarry
In aggregate, quarry and mining applications, the conditions are often extremely noisy and dusty. UWT offers robust sensors with total reliability as standard - whether for mobile plastering machines, mixing systems with heavy vibrating conditions, volume measurements within dosing tanks, stone crushers, conveyors or cement storage silos.
The challenge
Our customer needed to measure the sludge level in a lamellar separator. The contaminated water comes from a large metal recycling plant, and the sludge level measurement is used to control a pump, which pumps the sludge into a press.
Our solution
In this particularly difficult application, the UWT VIBRANIVO VN1000 vibrating fork with a specially developed electronic module for interface measurement is the solution. The adjustable sensitivity means the sensor can be set to the required switch point. The VN1000 offers total maintenance-free functionality and has also been well proven in other interface applications. The excellent cost-/performance ratio is another plus in comparison with other measurement principles.
Products
NB 3300 Rope Version
Interface Measurement
- Suitable for the continuous level measurement of sludges and solids in liquids.
- Continuously reliable measurement results.
- Flange mounting.
- Measuring range up to 30m.
- Version with improved corrosion resistance for chemical and salt applications.
- Sensitivity adaptable depending on sediment density.
The challenge
Our customer is part of a major, well known worldwide corporation. In Russia, Ukraine and Uzbekistan alone the corporation has 16 cement plants as well as mixing plants and quarries. As part of a capital reinvestment programme, our customer requested level control technology for their vessels containing hot material which is processed from the cement mill.
Our solution
By installing the UWT rotating paddle switch ROTONIVO® RN3000 in this application, the solution is found – even at a process temperature from +250° up to +600°C. The robust and reliable unit is maintenance-free and fulfills the claim of “Install and Forget”.
Products
With the following products our customer has solved this measurement task optimally:
RN 3004 Horizontal Tube Extension
Full, Demand, Empty Detector
Protection tube version
- Horizontal, vertical and diagonal installation.
- Extremely robust due to protection tube, able to withstand heavy mechanical load.
The challenge
Our customer needed to measure the fill level in a mixing facility for building material. The particular challenge here was the extreme vibration at the facility and the very dusty environment.
Our solution
UWTs vibrating fork probe VIBRANIVO VN2000 meets these extreme measurement requirements. Its extremely robust stainless steel extension arm and the specially sealed electronics unit ensure constantly reliable measurement, even in such difficult applications.
Products
With the following products our customer has solved this measurement task optimally:
VN 2030
Full, Demand, Empty Detector
Tube extension version
- Vertical, horizontal and oblique installation.
- Shaft length up to 4000mm available.
- Flexible height adjustment
- High sensitivity from 5g/l
The challenge
Our customer required continuous level measurement in a cement and building material plant with 15 silos. The particular challenge was to guarantee reliable measurement in a dusty environment whilst ensuring easy operational setup. A test unit has been installed to replace radar and 5 units have been subsequently purchased.
Our solution
The UWT lot NB3200 fulfills these requirements. The sure to function high-tech lot offers a high measurement accuracy even under very dusty conditions and does not adversely affect the material characteristics. The NB3200 is mounted and after easy programming, is ready for operational usage.
Products
With the following products our customer has solved this measurement task optimally:
NB 3200 Tape Version
Continuous Level Measurement
- Suitable for use in most bulk materials.
- Integrated tape cleaner to remove aherent materials.
- Mounting with threaded or flange connection.
- Measuring range up to 50m.
- Convenient level monitoring via Modbus interface together with cost competitive Nivotec 3500/4500.
The challenge
Our customer has a plant in Russia where insulation material is made from cellulose. Therefore, they requested an efficient and successful solution for limit detection. The problem within this application is the sticky material and the disposition to deposit build-up. Above all, the customer needed a fast reaction time by the switch for the low density (35g/l) of the material.
Our solution
The rotating paddle switch ROTONIVO® RN3001 with short extension is the best solution for this application. The installation of the unit can be vertical, horizontal or oblique in the silo. The unit is already suitable for material with a density of 15g/l. As a result, the RN3001 always promises precise and reliable full and empty detection
Products
With the following products our customer has solved this measurement task optimally:
RN 3001
Full, demand, empty detector
Short version
- Vertical, horizontal and oblique installation.
- Compact boom length, from 70mm.
- Particularly suitable for small process vessels.
The challenge
Our customer from Belarus needed a device for several vessels that contain sand and slaked lime (mixture of sand and chalk) before they are further conveyed for mixing. Plus, the level of the final brick mixture needed to be detected in the subsquent vessels before the mixture is conveyed in a press.
Our solution
The level of the sand slake lime mixture is detected suing the vibrating fork probe VIBRANIVO® VN4030. The positive cost-/performance ratio of the sensor is perfectly suited for the detection of fine-grained sand. The level of the final brick mixture is detected using the ROTONIVO® RN3004 rotating paddle switches. The sensors have impressed customers around the world due to their long lifetime and complete reliability proven in thousands of applications over many years
Products
With the following products our customer has solved this measurement task optimally:
VN 4030
Full, Demand, Empty Detector
Tube extension version
- Vertical, horizontal and oblique installation.
- Cost competitive level detector.
- Able to withstand high mechanical loads due to short extension length.
- Shaft length up to 4000mm available.
- Flexible height adjustment.
The challange
A plant operator in Russia requested the full detection in a pneumatic conveying system. The system conveys cement and quartz sand. The process pressure is 8 bar. The sensor needed to be loadably as well as fast and reliably switching
Our solution
The vibrating sensor VIBRANIVO VN4020 offers a perfect cost-/performance ratio and best technical attributes. It works at a process pressure of up to 10 bar and has the necessary mechanical stability due to its stainless steel Extension.
Products
With the following products our customer has solved this measurement task optimally:
VN 4020
Full, Demand, Empty Detector
Short version
- Vertical, horizontal and oblique installation.
- Cost competitive detector.
- Compact extension length: 170mm.
- Ideal for small process vessels and large silos.
- Able to withstand high mechanical loads due to short extension length.
The challenge
Our customer, a soil processing company, required a low level detection probe for all dosing tanks, filled with several varieties of soil. Performance was supposed to take place regardless of material properties such as caking and high mechanical exposure.
Our solution
With the UWT level limit sensor of the capacitive series RF3200 this low level detector solved the problem in an excellent way. Due to the simple construction of the capacitive sensor and its reliability, an optimum outcome could be achieved. The first setting via “push button“ calibration is very easy to accomplish. High mechanical exposure does not effect reliable measurement.
Products
With the following products our customer has solved this measurement task optimally:
RF 3100
RF3100 Standard Version
Full, Demand, Empty Detector
Shaft is selectable as
- Rod version (vertically, horizontally and oblique installation)
- Cable version (vertical installation)
Both versions are available as remote version (i.e. for use in applications/processes with heavy vibration)
RF 3200
RF3200 Heavy Duty Version
Full, Demand, Empty Detector
- Able to withstand high mechanical stress and strong tensile force.
Shaft selectable as
- Rod version (vertical, horizontal, oblique installation)
- Cable version (vertical installation)
Both versions are available as remote versions (i.e. for use in applications/processes with heavy vibration).
The challange
Our customer, a well-known German producer of cement and lime, required a reliable full detector for the cement silo. In the silo the sensor was exposed to very dusty and harsh environments. We endeavoured to stop the influence of these harmful effects during measurement.
Our solution
With the UWT level limit sensor of the capacitive series RF3200 this full detector solved the problem in an excellent way. Due to the simple construction of the capacitive sensor and its reliability, an optimum outcome could be achieved. The first setting via “push button“ calibration is very easy to accomplish.
Products
With the following products our customer has solved this measurement task optimally:
RF 3100
RF3100 Standard Version
Full, Demand, Empty Detector
Shaft is selectable as
- Rod version (vertically, horizontally and oblique installation)
- Cable version (vertical installation)
Both versions are available as remote version (i.e. for use in applications/processes with heavy vibration)
RF 3200
RF3200 Heavy Duty Version
Full, Demand, Empty Detector
- Able to withstand high mechanical stress and strong tensile force.
Shaft selectable as
- Rod version (vertical, horizontal, oblique installation)
- Cable version (vertical installation)
Both versions are available as remote versions (i.e. for use in applications/processes with heavy vibration).
The challenge
Our customer, a well-known German producer of cement and lime, required a level limit switch for his wet sand bunker in order to prevent overfilling as a result of new loads of sand. Wet sand tends to cake slightly and show signs of high abrasion.
Our solution
With the UWT level limit sensor of the capacitive series RF3200 this full detector solved the problem in an excellent way. Due to the simple construction of the capacitive sensor and its reliability, an optimum outcome could be achieved. The first setting via “push button“ calibration is very easy to accomplish.
Products
With the following products our customer has solved this measurement task optimally:
RF 3100
RF3100 Standard Version
Full, Demand, Empty Detector
Shaft is selectable as
- Rod version (vertically, horizontally and oblique installation)
- Cable version (vertical installation)
Both versions are available as remote version (i.e. for use in applications/processes with heavy vibration)
RF 3200
RF3200 Heavy Duty Version
Full, Demand, Empty Detector
- Able to withstand high mechanical stress and strong tensile force.
Shaft selectable as
- Rod version (vertical, horizontal, oblique installation)
- Cable version (vertical installation)
Both versions are available as remote versions (i.e. for use in applications/processes with heavy vibration).
The challenge
Our customer, a producer of cement and lime, required a reliable full detector for the silo mixing plant. The particular challenge consisted in a very dusty environment in addition to abrasive materials.
Our solution
With the UWT level limit sensor of the capacitive series RF3100 this full detector solved the problem in an excellent way. Due to the simple construction of the capacitive sensor and its reliability, an optimum outcome could be achieved. The first setting via “push button“ calibration is very easy to accomplish.
Products
With the following products our customer has solved this measurement task optimally:
RF 3100
RF3100 Standard Version
Full, Demand, Empty Detector
Shaft is selectable as
- Rod version (vertically, horizontally and oblique installation)
- Cable version (vertical installation)
Both versions are available as remote version (i.e. for use in applications/processes with heavy vibration)
RF 3200
RF3200 Heavy Duty Version
Full, Demand, Empty Detector
- Able to withstand high mechanical stress and strong tensile force.
Shaft selectable as
- Rod version (vertical, horizontal, oblique installation)
- Cable version (vertical installation)
Both versions are available as remote versions (i.e. for use in applications/processes with heavy vibration).
The challenge
A manufacturer of building materials, who operates throughout Germany required an indicator for his Rotopack. This device (Rotopack) permanently filled bags (e.g. cement). Therefore a high reliability at the level switch was mandatory. Furthermore product changes were not supposed to affect measurement.
Our solution
With the UWT level limit sensor of the capacitive series RF3100 this application could be solved in an excellent way. Due to the high quality capacitive sensor, secure filling is guaranteed. The first setting via “push button“ calibration is very easy to accomplish. A product change does not affect reliable switching.
Products
With the following products our customer has solved this measurement task optimally:
RF 3100
RF3100 Standard Version
Full, Demand, Empty Detector
Shaft is selectable as
- Rod version (vertically, horizontally and oblique installation)
- Cable version (vertical installation)
Both versions are available as remote version (i.e. for use in applications/processes with heavy vibration)
RF 3200
RF3200 Heavy Duty Version
Full, Demand, Empty Detector
- Able to withstand high mechanical stress and strong tensile force.
Shaft selectable as
- Rod version (vertical, horizontal, oblique installation)
- Cable version (vertical installation)
Both versions are available as remote versions (i.e. for use in applications/processes with heavy vibration).
The Challenge
The measuring task was to install a reliable level measurement in a concrete silo with cement, which works in a very dusty atmosphere and guarantees a service life of more than 5 years. Level measurement is automated without an operator having to climb up the silo to check the level. Thus a classic original equipment of a level measurement in cement.
- The first need was that the level could measure a range of min. 30m.
- Immunity from turbulence arising in cement silos.
- Immunity to noise in cement silos.
- Good price-quality ratio.
- Free maintenance.
- Long life cycle of the product.
- Immunity against dust and disturbances.
Our Solution
The NB 4200, which is installed in the cement factory, is measuring cement in silos with a height of 30 meters and with a process temperature of 80°C. The integrated tape cleaner protects the housing against pollution. It is the perfect solution in a cement application.
Products
With the following products our customer has solved this measurement task optimally:
NB 4200 Tape Version
Continuous Level Measurement
•Suitable for most bulk solids.
•Integrated tape cleaner to remove aherent materials.
•Mounting with threaded or flange connection.
•Measuring range up to 30m.
•Convenient level monitoring via 4-20mA signal together with Nivotec 3500.
The Challenge
A plant builder in Estonia asked for a level switch in a gravel hopper. The function should be a demand detector to set an alarm in time if the hopper gets empty and more material should be filled in. The hopper is equiped with an electrical rotary vibrator. It is mounted at the cone wall. It avoids material deposit the the wall inside and improve the material flow. The vibrator works in short bursts. The hopper is top loaded with a front loader. The material is gravel with 0-32mm grain size. The hopper is located outside therefore the sensor must have a temperature working range from -20 to +30C.
The challenge for the sensor is the strong mechanical load to the electronic housing by the vibrator and to the extension probe inside the hopper by the gravel.
Our Solution
The solution was a rotating paddle switch Rotonivo RN3004 with the option for a separate housing. It is mechanically uncoupled to the process. A rubber plate devides the shaft and damps the swinging amplitude and protects the gear and the electronic parts against damage. The protection tube at the probe protects in the application. So the gravel cannot damage the sensor and cause a malfunction. The solution is simply working and solves this heavy application.
Products
With the following products our customer has solved this measurement task optimally:
RN 3004 Horizontal Tube Extension
Full, Demand, Empty Detector
Protection tube version
- Horizontal, vertical and diagonal installation.
- Extremely robust due to protection tube, able to withstand heavy mechanical load.
The Challenge
A customer in England manufactures stone recovery plants for the quarrying industry. The stones are placed in a container filled with water, which is stirred slowly. All the dirt is removed from the stones. The stones are then sold again as building material. The dirt in the water settles as mud at the bottom of the tank.
The application requires the measurement of the sludge level at the bottom of the tank. From a certain height, the mud is pumped out.
The customer had already tried a radar and an ultrasonic system, but both were unsuccessful due to the high solids content in the water and the movement of the water.
Our Solution
The Nivobob NB3300 was used and proved to be a successful product for this application. The advantages that the Nivobob has over other technologies used are as follows. The sensing weight is not affected by the water movement. It moves through the water surface to the mud layer and feels like the separating layer. The sensing weight of the sensor can be adjusted to the viscosity of the slurry. An electromechanical, reliable and easy-to-use system for measuring the sludge level in the wash tank.
Products
With the following products our customer has solved this measurement task optimally:
NB 3300 Rope Version
Interface Measurement
- Suitable for the continuous level measurement of sludges and solids in liquids.
- Continuously reliable measurement results.
- Flange mounting.
- Measuring range up to 30m.
- Version with improved corrosion resistance for chemical and salt applications.
- Sensitivity adaptable depending on sediment density.
The Challenge
A customer in Norway was looking for a reliable level sensor for a fly ash silo. In the application are strong caking and dust. In the past, he had already tested capacitive sensors and guided microwave, but without lasting success. The reason was the caking on the sensor due to changing air humidity.
Our Solution
The free radiating radar sensor NR3100 was the perfect solution here. The narrow beam of 4 ° made a measurement possible until the end of the cone. The high-frequency bulk material radar works reliably even in this dusty fly ash application. The integrated air purge for the lens antenna was not needed.
Products
With the following products our customer has solved this measurement task optimally:
NR 3000
The Challenge
The level measurement should be carried out in storage silos for gypsum powder. The finished product is conveyed pneumatically into the storage silo after production. The overall production planning is difficult if the fill level monitoring of the storage silos is missing. The operator previously had to climb onto the silo roof and carry out a manual level measurement with a rope and a weight. The task was to automate the level measurement and to avoid manual measurements.
Our Solution
The UWT lot system Nivobob 3200 in the tape version fulfills these extreme requirements. The integrated tape cleaner prevents contamination of the band interior. The Nivobob 3200, thereby, provides a reliable measurement that can be totally trusted. Neither very dusty nor clumpy conditions adversely affect the UWT Lot system. The electromechanical sensor NB3200 is developed for dusty applications and also for high process temperatures and is the best solution in this gypsum storage.
Products
With the following products our customer has solved this measurement task optimally:
NB 3200 Tape Version
Continuous Level Measurement
- Suitable for use in most bulk materials.
- Integrated tape cleaner to remove aherent materials.
- Mounting with threaded or flange connection.
- Measuring range up to 50m.
- Convenient level monitoring via Modbus interface together with cost competitive Nivotec 3500/4500.
The Challenge
Our customer from Russian Federation required a reliable and economical solution for the contents measurement of 4pcs. hydrophobic chalk storage silos. The application is dusty, sticky and should be maintenancse free.
Our Solution
The solution is the Nivobob NB4200 with integrated tape cleaner. Especially in dusty and caking applications, this sensor works reliably. 500,000 measuring cycles make this sensor a maintenance-free device. It can be integrated into a network via Modbus RTU or evaluated via 4-20mA.
Products
With the following products our customer has solved this measurement task optimally:
NB 4200 Tape Version
Continuous Level Measurement
•Suitable for most bulk solids.
•Integrated tape cleaner to remove aherent materials.
•Mounting with threaded or flange connection.
•Measuring range up to 30m.
•Convenient level monitoring via 4-20mA signal together with Nivotec 3500.
The Challenge
One of the leading companies in the concrete production market in Peru needed to control cement levels in 11 meters silos for inventory and process control. The environment was very dusty, especially after the filling, which makes it difficult to measure. It was also important to visualize the volumes of the total 7 silos into individual displays.
Our Solution
In this case the most suitable solution was the non-contact level transmitter, Nivoradar 3100 with 78Ghz frequency and 4º beam angle. The analogue signal 4-20mA was integrated into the Nivotec 4700 visualization system, thus obtaining a precise and reliable visualization for cement measurement in dusty environment.
Products
With the following products our customer has solved this measurement task optimally:
NR 3100
Content measurement
- 78GHz FMCW-Radar Level transmitter
- Suitable for use in almost all solids
- Fixed flange and adjustable flange option
- Measuring range up to 100m
- Connection to our user-friendly visualisation systems Nivotec 3500/4500 possible using 4-20mA signal
The Challenge
A customer in the Russian Federation has built a plant for cement handling and production of ready-mixed concrete. The customer needed a level measurement for all silos. The operator need to have the information about the amount of empty space in each of the 6 silos to understand how much material and in what silo could be loaded from the railway wagons. The application is very dusty, sticky and the surface of the cement-level is steep.
Our Solution
The elektromechanical sensor NB4200 in the tape version is the perfect solution in this silos. It works independent of dust, sticky material and the angle of the surface. The integrated tape cleaner protects against dust in the sensor housing.
Products
With the following products our customer has solved this measurement task optimally:
NB 4200 Tape Version
Continuous Level Measurement
•Suitable for most bulk solids.
•Integrated tape cleaner to remove aherent materials.
•Mounting with threaded or flange connection.
•Measuring range up to 30m.
•Convenient level monitoring via 4-20mA signal together with Nivotec 3500.
The Challenge
A customer in Belarus has some applications for a level sensor and silo-full detection in several cement silos. The silo height is 18m.
Our Solution
The elektromechanical sensor Nivobob NB4200 was used in this silo applications as a level sensor. It works up to a measuring range of 30m and is a reliable solution in this dusty and sticky application. The integrated tape cleaner protects against dust in the sensor housing. Harsh conditions in the silos does not influence the accuracy and lifetime of the sensor. It is predestined to work in a cement application.
Products
With the following products our customer has solved this measurement task optimally:
NB 4200 Tape Version
Continuous Level Measurement
•Suitable for most bulk solids.
•Integrated tape cleaner to remove aherent materials.
•Mounting with threaded or flange connection.
•Measuring range up to 30m.
•Convenient level monitoring via 4-20mA signal together with Nivotec 3500.
The Challenge
Our customer, the cement company in Algeria required a reliable, maintenance free level limit switches for their clinker applications. The special challenge was the falling clinker material as in combination with the very high temperatures in this application. They were trying several technologies before approaching UWT for a solution. UWT designed a special design for these clinker applications in the cement industry.
Our Solution
The ideal solution from UWT for this application is the high temperature version of our level limit switch Rotonivo 3004 with several specifics too meet the challenge in this application:
- Stainless steel sliding bearing with conical shaped contact
- Reinforced stainless steel shaft with increased diameter
- Shorter shaft at the end of the stainless steel protection cap - decreased the torque at this point
- Reinforced fixing bolts and paddle made from 1.4404 steel
- Stronger spring to increase the switching torque of the RN3
- Sealing at the end of the temperature isolation (housing side)
Products
With the following products our customer has solved this measurement task optimally:
The Challenge
One of the largest producer of concrete in Brazil needs to measure the volume of cement in silos of 11,6 meters and 3,5 meter of diameter in order to reduce the logistic costs. Also, precision was very important to obtain more efficiency of the material supply, even though the non-centralized discharge cone was filled up. The measurement is in a very dusty environment. The electromechanical NB4100 was the best solution.
Our Solution
Our best solution was the Nivobob serie 4200 tape version able to measure 15 meters and with tape cleaner system integrated. It was a robust system able to work many years without any maintenance. The high precision of 1,5% of the measure range fits to the necessity working perfectly with the selected midpoint generating high accuracy to the process.
Products
With the following products our customer has solved this measurement task optimally:
NB 4200 Tape Version
Continuous Level Measurement
•Suitable for most bulk solids.
•Integrated tape cleaner to remove aherent materials.
•Mounting with threaded or flange connection.
•Measuring range up to 30m.
•Convenient level monitoring via 4-20mA signal together with Nivotec 3500.
The Challenge
One of our customers in Costa Rica needs to control a conveyor belt system responsible for carries diatomite in rocks and powder into a hopper. The abrasion and dusty environment was a big challenge together with the quick material filling constantly, which requires a reliable response from the limit switch sensor.
Our Solution
In this case the most suitable solution is the Rotonivo series RN3004 with special PTFE sealing and 150mm length. The process extension construction made of stainless steel pipe is very robust to resist abrasion of the rocks and the very tight sealing avoids the ingress of any dust inside the probe. Due to the high sensitivity and the 1 rpm motor rotation the sensor could quickly detects the material and provided safe alarm.
Products
With the following products our customer has solved this measurement task optimally:
RN 3004 Horizontal Tube Extension
Full, Demand, Empty Detector
Protection tube version
- Horizontal, vertical and diagonal installation.
- Extremely robust due to protection tube, able to withstand heavy mechanical load.
The Challenge
We were contacted by a long standing client regarding successful continuous level measurement in for their process hopper. The application revolved along a train tippler that tips the contents of the train truck (in this case, coal) into the hopper below which is then conveyed to the site. The issue they were facing is that their existing radar units from a competitor supplier did not meet their highly accurate demands and could not cope in the environment.
Our Solution
Due to the nature of the application, the NivoBob could not be used. We offered the NivoRadar with a dust tube fitted with air purge to keep the dust off the lens. The radar was installed on a beam that was hanging over the bulk of the coal. After 2 weeks of successful testing, the client had bought 2 more units for this application. The dusty environment was successfully overcome by the dust tube with and airline connected to purge the lens. Accurate and repeatable reliable readings meant a successful solution to this difficult application.
Products
With the following products our customer has solved this measurement task optimally:
NR 3100
Content measurement
- 78GHz FMCW-Radar Level transmitter
- Suitable for use in almost all solids
- Fixed flange and adjustable flange option
- Measuring range up to 100m
- Connection to our user-friendly visualisation systems Nivotec 3500/4500 possible using 4-20mA signal
The Challenge
A customer in Belarus has some applications for a level sensor and silo-full detection in several cement silos. The silo height is 18m
Our Solution
The elektromechanic sensor Rotonivo RN4001 was used in this silo full applications as limit switch. It has a pendulum shaft as an extension. This function protects it against bending and increase the life time. Not only the performance but although the low price convinced this customer.
Products
With the following products our customer has solved this measurement task optimally:
RN 4001 Pendulum Shaft
Full Detector
Version with pendulum shaft
- Vertical installation.
- Flexibly adjustable switch point on pendulum shaft.
