Presentation on theme: "WEKA Visual Level Indicator (VLI). Location WEKA is situated in Baeretswil, 25 km south east of Zurich and can be easily reached in half an hour by car."— Presentation transcript:
WEKA Visual Level Indicator (VLI)
Location WEKA is situated in Baeretswil, 25 km south east of Zurich and can be easily reached in half an hour by car or public transport.
Background WEKA was founded in 1940 Member of the ARCA Flow Group since 2001 Leading manufacturer of instruments for level measurement of liquids, cryogenic components and special valves 45 employees More than 90 percent of the turnover is realized by exporting Our strengths are: development, production and testing of tailor- made solutions Instruments for level measurement (VLI and TLI) are sold through a world wide net of representatives Cryogenic components and special valves are mostly sold directly to our world wide customer base
ARCA Flow Group Feluwa Pumpen GmbH Mürlenbach, Germany Pumps Feluwa Pumpen GmbH Mürlenbach, Germany Pumps ARCA Regler GmbH Tonisvorst, Germany Valves ARCA Regler GmbH Tonisvorst, Germany Valves WEKA AG Bäretswil, Switzerland Level Measurement & Special Valves WEKA AG Bäretswil, Switzerland Level Measurement & Special Valves von Rohr AG Muttenz, Switzerland Valves von Rohr ARCA BV Eerbeck, Netherlands salesorganisation von Rohr AG Muttenz, Switzerland Valves von Rohr ARCA BV Eerbeck, Netherlands salesorganisation Subsidiories Strotzbüsch, Germany Dresden, Germany Subsidiories Strotzbüsch, Germany Dresden, Germany ARCA Joint Ventures/Partners:Forbes Marshall ARCA Ltd, Pune, India ARCA Valvulas S.A. de C.V., Mexico-City/Tampioco, Mexico SAMYANG-ARCA Co. Ltd., Seoul, South Korea Wuzhong Instrument Co. Ltd., Wuzhong, P.R. China TOA Valve Co., Ltd., Tokyo, Japan WEKA Joint Ventures:Control Components, Caringbah, Australien
Quality Policy Manufacturer Certifications: ISO 9001:2000 PED 97/23/EC Module H/H1 ATEX 94/9/EC SVDB 501 AD HP 0 / TRB200 Product Approvals: Sophisticated production and quality control A Total Quality Management System is fully established and integrated in the whole production process including sales, manufacturing and administrative belongings
Our Vision To be the leader in level measurement of liquids with the float technology To be the leader in the cryogenic component market To grow sustainably To improve know-how and quality standards continuously To maintain high flexibility To act responsible towards customers, environment and employees Know-How, Quality, Flexibility
WEKA Company Structure Urs Faust Manufacturing & Quality Management Urs Faust Manufacturing & Quality Management Stefan Otto Electronics Stefan Otto Electronics Urs Witzig Sales & Marketing Urs Witzig Sales & Marketing Brigitte Pfenninger Finance & Administration Brigitte Pfenninger Finance & Administration Fridolin Holdener Managing Director Engineering Fridolin Holdener Managing Director Engineering Management Team
WEKA Company Structure Joe Sailer Technical Sales Coordinator Joe Sailer Technical Sales Coordinator Bernhard Meier Technical Sales Coordinator Bernhard Meier Technical Sales Coordinator Urs Witzig Marketing & Sales Manager Urs Witzig Marketing & Sales Manager Stefan Otto Product Manager Level Instruments Stefan Otto Product Manager Level Instruments Fridolin Holdener Product Manager Valves Fridolin Holdener Product Manager Valves Rolf Tschudin Technical Sales Coordinator Rolf Tschudin Technical Sales Coordinator Benjamin Kocher Sales Apprentice Benjamin Kocher Sales Apprentice Sales & Marketing
Phyisical principle Function Based on the float principle and the principle of communicating vessels the liquid level inside the VLI is always the same as in the vessel to be monitored
Floats Forced level transmission Hermetically sealed floats For pressures up to 350bar Densities > 0.3g/cm3 Compact dimensions Large float choice for optimal selection of the indicator
Bar Magnet System Horizontal bar magnet AlNiCo magnet Horizontal magnet field Highest magnetic flux Large radial extension Low weight Single pole activation of accessories
Magnetic guiding tape system Function Similar to a compass needle, the bar magnet inside the float always points to the integrated magnetic guide tape.
Other Magnet Systems Magnet system Ring magnet Fe-Oxyd Magnet Vertical orientation Small radial extension High Weight Risk of double switching Back-to-back Systems Ring magnets Fe-Oxyd magnets Back-to-back orientation Magnetisch bedenklich Big radial extension Very high weight Long term stability in question
Visual Level Indicators (VLI) Simply a sight glass replacement ? No... …its a level indicator …its a level control …its a level transmitter 3 functions in one device!
… Level Indicator Visual Indication No external energy required Direct, on the spot No need for calibration Mechanically robust Perfect Readability No Discolouration Maintenance free Shock proven
... as Level Control On / Off Outside of the Media Not subject to pressure Freely adjustable Multiple switch points Bi -stable switches SPST / SPDT Versions 240VA / 160 W rating Stainless steel housing EEx i / EEx d (ATEX) CE
… as Level Transmitter 4 mA / 0% 4 mA / 0% 20 mA / 100% Outside of the vessel Not subject to pressure 10 or 5 mm resolution Linear- or non-linear Version Standard 3-wire version 2-wire mA version Max 350° C media temperature 316 steel EEx ia / EEx d / CE In combination with HART-Transmitter
Applications Food industry Chemical industry Offshore applications Petro and Oil and Gas Industry Pharmaceuticals Hydraulic and thermal power plants Shipbuilding Textile industry Wasser tanks and water treatment Etc.
Operational area Pressure ratings PN6 … PN630 Media temperatures -40°C … +400°C Densities > 0.30g/cm³ Materials 316 / 316L Hasteloy ® C-276 Inconel ® Incoloy ® PVC, PA, PP With Insulation With heat tracing
Bi-stable Magnetic Switches On/off or change over switches (SPST / SPDT) Standard-, Mini- or Ex- version Stainless steel housing Switch rating up to 250V / 1A Media temperature up to 400°C Type approved according European directive 94/9/EC (ATEX) EEx ia and EEx d version NAMUR version PTB approval CENELEC approval CE certifictaion
Transmitter 3-wire version Max 350°C Media temperature 2-wire mA Max. 250 °C Media temperature EEx ia and EEx d versions CENELEC approved CE marking Conform to European Directive 94/9/EC (ATEX)
Marine Approvals American Bureau of Shipping Det Norske Veritas Germanischer Lloyd Lloyds Register of Shipping Polski Rejestr Statkow Russian Maritime Register of Shipping Registro Italiano Navale Bureau Veritas
References Air Liquide Linde Cern Messer Cryotherm BOC (England) Air Products INFN/LNN IPP TIFR Nippon Sanso Praxair NIFS NSW HDW Atlas Copco Marlog Fincantieri Mazagon GRSE Visual Level Indicators Cryogenic- and Special Valves Tank Level Indicators Shell ABB Krupp-Uhde Air Liquide Snambrogetti Foster Wheeler Linde Kvaerner Axima Sulzer Friotherm Caliqua
Summary Weka Visual Level Indicators are : Perfect readability of the liquid level 3 functions in one instrumnent: Level indication, level switch and level transmitter Works as level indication without external energy supply Patented WEKA magnet-system Versatile Adaptable Reliable (over 40 years of proven experience) Cost effective