Download - Nivelco Process Control Co., Inc.
Download - Nivelco Process Control Co., Inc.
Download - Nivelco Process Control Co., Inc.
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Level measurement in the chemical and pharmaceutical industriesÉMV <strong>Inc</strong>ineration Plantin Sajóbábony, HungaryThe <strong>Inc</strong>ineration Plant of the North-Hungarian ChemicalWorks in Sajóbábony provides a very good example ofhigh-technology instrumentation. Thanks to intensivedevelopment and investment activities, the total tank-farmhas reached 4000 m 3 total storage capacity with17500 tons/year waste-to-energy capacity.This energy-content is sold in steam or hot-water form.The industrial and communal wastewater is treated bythe wastewater works which has a 6200 m 3 /day hydrauliccapacity and the Chemical Oxygen Demand (COD)capacity is 55000 kg/day.3 pieces of NIVOTRACK MTC-530-8 Ex magnetostrictivetransmitter with rigid probe, Measurementrange: 3 m. Accuracy: 1 mm, Output: HART4 pieces of MicroTREK HHR-428-8 Ex guided microwavetransmitter, Measurement range: 2.6m.Accuracy: 3 mm, Output: HART11 pieces of UNICONT PGK-301-B Ex 4…20 mA /4…20 mA analogue isolated power supply modulewith HART interface3 pieces of NIPOWER PPK-331 type 230V AC/24 V DC power supply module1 MH-02 type HART modem1 process controller PC with NIVISION softwareThe successful instrumentation project has involved:4 pieces of 6m tall standing xylol tanks3 pieces of 3m tall lying boric acid tanks4 pieces of xylol distillation tanks, with a temperaturerating of 130°C, and pressure of 3 barThe low relative dielectric constant (ε r) and hightemperature of the measured mediums made the measurementmore difficult. The average temperature xylol andboric acid tanks have been equipped with magnetostrictivetransmitters, and the high-temperature xylol distillationtanks use guided microwave transmitters.The applied instruments are the following:4 pieces of NIVOTRACK MTK-560-8 Ex magnetostrictivetransmitter with flexible probe, Measurementrange: 6 m. Accuracy: 2 mm, Output: HARTThe system component modules are placed in a commoninstrument rack. The three power supply modules supplythe level transmitters via the intrinsically safe isolatormodules. The HART signals of the transmitters are transferredto a process controller PC. The PC processes themeasurement data and visualizes the flowchart ofthe tank-park with the actual measurement results.Furthermore the processed data got archived. NIVISIONsoftware determines the low- and high level limit valuesfrom the measured levels and provides reliable datafor the filling and emptying processes.Sándor UjfaludiRegional RepresentativeNIVELCO <strong>Co</strong>.sujfaludi@nivelco.com27