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Instrumentation for building material mixing processes

Instrumentation for building material mixing processes. Solids content with Liquisys II/Liquisys S Limit switch or level with Prosonic T . Storage silo solids. Tank with liquids with solid concent. Mischer. Continuous level measurement with Levelflex FMP 232E/332E

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Instrumentation for building material mixing processes

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  1. Instrumentation for building material mixingprocesses Solids content withLiquisys II/Liquisys SLimit switch or levelwith Prosonic T Storagesilo solids Tank with liquidswith solid concent Mischer Continuous level measurement with Levelflex FMP 232E/332E Soliswitch FTE 30 Limit switch detection in liquids with Liquiphant FTL 361 Electromagnetic flow measurement with Promag 33 F

  2. The all-rounder in analytical measuring technology pH Cond. O² Turbidity pH/Redox (CPF 10)O²Turbidity Cond. (CLS 50) Transmitter Accessories inline Vessel/tank Sensors Accessories Immersionassembly Immersionassembly Vessel/tank inline Sensorholder

  3. Turbidity measurement of industrial water in a lime burning plant with Liquisys II CUM 252 and sensor CUS 41 • Control of the solids concentration for water processing • Installation of the sensor in retractable assembly CUA

  4. From aggregates to finished product in the ready-mixed, concrete and mortar industry key stages with e.g. multiple-chamber cells of a partitioned silo in a vertical mixing plant, silos with cement Transportation+storage * Proportioning weigher Mixing Closed circuit of water excess and /wash water and concrete recycling Loading * partially combined with sand + gravel plant

  5. Instrumentation for the ready-mixed industry The rightmeasurementsystem fromaggregates tofinished product Photo: Stetter GmbH

  6. Recycling - closed circuit processing e.g. in ready-mixed plants Recycling of excess water and concrete with solids accumulationThe use of the water which accumulate when washing out feed skips and trucks for ready-mixed transport is country wise regulated by law, which can also be regional different. Cost saving using washing water instead of clear water Necessary determination of raw density to correct the mixture that may be recycled to the process in accordance e.g. german guidelines „DAfStb“ = Deutscher Ausschuss für Stahlbeton, German Committee for Reinforced Concretewith defined processing conditions and limit values for raw density Saving energy and dust tip costs using raw density for controled cycloning to avoid concrete sludge!! Protocol according to EN/ISO 9001

  7. Instrumentation for the concrete water recycling Recycling of concrete: excess water and concrete which accumulate when washing out feed skipsand trucks for ready-mixed transport 6 Determing the solids content and raw density with Liquisys S CUM 253 and process and immersion sensor CUS 41 7 Measuring the amount of excess water with magnetic flowmeter Promag 33F, alternatively to water weighing

  8. Typical design of a concrete recycling plant 1 Reclaimer 2 Feeding hopper 3 Special conveyer 4 Rinse water 5 Submerged pump for 6 Recycling water pump pipe rinse water pipe 7 Ultrasonic level regulator e.g. Prosonic T8 Agitator 9 PLC Prosonic TFTU 23x/FMU 23X Photo: Bibko System

  9. Recycling of washing water and concretein ready-mixed plant Solids content and raw density measurement in agitator basin Liquisys S CUM 253alternatively CUS 223 panel mountedversion Holder Grating Sensor holder Immmersion pipe Opto-electronicsensor CUS 41

  10. features advantages Self check of measuring point for less personal maintenance to prevent or remove e.g. sludge around the sensor Live-check and automatic cleaning trigger Programmable current output Raw density of any sample can be shown directly, e.g. for concrete washing water measured range 1.00 - 1.40 kg/dm³ (=700g/l dep. on sample) Concentration measurement with user specific correlation Liquisys S Turbidity / Suspended Solids - plus package High resolution at working point and survey when exceeding

  11. The package for raw density measurementwith applicational adapted software in the Liquisys S transmitter Pre-calibrated data set for concrete washing water based on typical samples enable to use the measuring line CUS 41/CUM 2x3 up to a raw density of appr. ca. 1.15 without calibration, thenthree-point calibration with dilution ratio of 100%, 10% and 3% Direct display in raw density Pre-set of the current output to4mA .. 20mA corresponding to raw density 1.0 .. 1.3

  12. Recycling of washing water and concretein ready-mixed plant Solids content and raw density measurement in agitator basin Opto-electronic sensor CUS 41 , screwed in the sensor holder

  13. Installation of the Liquisys S sensor CUS 41in agitator basinin ready-mixed plants General notice: Installation with an immersion assembly so that also at minimum level of the basin the sensor is covered with excess and washing water Mounting with a minimum distance of appr. 1 m from the immersion pump The sensor holder allows alternatively a basin rimor grating attachement

  14. Installation of the Liquisys S sensor in agitator basinin ready-mixed plants sensor CUS 41 Benefits: Compact shock-proof sensor design Inclined flat surface uses medium flow to increase self-cleaning effect Scratch-proof sapphire windows Low maintenance measurment withexperimental value of 4-6 weeks for control and possibly cleaning of the sensor

  15. Liquisys S software feature All parameters - Live Check LIVECHE PCSalarm adjustable in time periods - up to 4 hours CHECK PCS - process check system alarm, when no change of medium, e.g. if sensor in theopen air sensor is surrounded with concrete sludge,which prevents exchange with flowing medium sensor is nor broken, but totally soiled

  16. Direct comparison of measured raw density of washing water with Coriolis mass flow meter Promass Iand hydrostatic balance with a tube

  17. Turbidity - suspended solids -raw density Fit for the application in concrete washing water with Liqusys S- start in 1998 Field tests at Readymix plants with CUS/CUM Check of accuracy: calibration with 1 sample and check with 6 samples from different plants results:1. Lab. 1.021 CUS:1.0202. 1.033 1.0273. 1.039 1.0444. 1.052 1.0535. 1.070 1.0716. 1.110 1.1017. 1.186 1.1608. 1.208 1.2219. 1.389 1.392 Liqusys S is standard for raw density measurement of concrete washing water Measurement, calibration and display in raw density (kg / dm³)rho = 1,00 means clear waterrho = 1,40 means appr. 700g/l

  18. Liquisys S CUS 41/CUM 2x3 for recycling of concrete washing water Liquisys S displayin raw density Cost saving using washing waterinstead of clear or fresh water Securing the quality of concretewith continuous measurement ofraw density for correction of recipeSaving energy and dust tip costs using raw density for controled cycloning -to avoid sludge CUS 41 sensor installed withimmersion assembly in agitator basin

  19. Recycling of concrete washing water in the prestressed concrete ceiling production

  20. Recycling of concrete washing water Mixing plantwater weighing Clear water for feed skips in theprestressed concrete ceilingproduction Clear water for washing De-sludger Water dosing station Liquisys CUM installed in 1997 Vessel for thicksludge draining Fresh water CUS 4 Straighten outsolids particles> 2mm Process at SchwörerBautechnik Basin with agitator with concrete water Buffer forclear water Clear water basin

  21. Recycling of washing water in prestressed concrete ceiling production Solids content and raw density measurement in agitator basin- first installation in 1997 Bypass installation of opto-electronic sensor CUS 4 in flow assembly CUA 250 Photo:Schwörer Bautechnik (D) Straighten outsolids particles> 2mm

  22. Comparison of solids content values (Time period from april - september 1997)

  23. The measuring chain

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