WEKA Visual Level Indicator VLI Location WEKA is

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 tailormade 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 Subsidiories Strotzbüsch, Germany Dresden, Germany Feluwa Pumpen Gmb. H Mürlenbach, Germany Pumps www. feluwa. de ARCA Regler Gmb. H Tonisvorst, Germany Valves www. arca. de von Rohr AG Muttenz, Switzerland Valves www. von-rohr. de von Rohr ARCA BV Eerbeck, Netherlands salesorganisation WEKA AG Bäretswil, Switzerland Level Measurement & Special Valves www. weka-ag. ch 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

WEKA is selling worldwide Visual Level Indicators VLI 50 % Cryogenic Components 25 % Tank Level Indicators TLI 15 % Stainless Steel Valves 10 % Total Revenues ~ 5 Mio. EUR (90% Export)

WEKA worldwide

Quality Policy 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 Manufacturer Certifications: • ISO 9001: 2000 • PED 97/23/EC Module H/H 1 • ATEX 94/9/EC • SVDB 501 • AD HP 0 / TRB 200 Product Approvals:

Our Vision Know-How, Quality, Flexibility • • • 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

WEKA Company Structure Management Team Fridolin Holdener Managing Director Engineering Urs Witzig Sales & Marketing Stefan Otto Electronics Brigitte Pfenninger Finance & Administration Urs Faust Manufacturing & Quality Management

WEKA Company Structure Sales & Marketing Urs Witzig Marketing & Sales Manager Joe Sailer Technical Sales Coordinator Bernhard Meier Technical Sales Coordinator Rolf Tschudin Technical Sales Coordinator Benjamin Kocher Sales Apprentice Stefan Otto Product Manager Level Instruments Fridolin Holdener Product Manager Valves

Visual Level Indicator (VLI = Visual Level Indicator)

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 350 bar Densities > 0. 3 g/cm 3 Compact dimensions Large float choice for optimal selection of the indicator

Bar Magnet System • • Horizontal bar magnet Al. Ni. Co 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. . . • …it‘s a level indicator • …it‘s a level control • …it‘s 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 • • • Outside of the Media Not subject to pressure Freely adjustable Multiple switch points Bi -stable switches SPST / SPDT Versions 240 VA / 160 W rating Stainless steel housing EEx i / EEx d (ATEX) CE On / Off

… as Level Transmitter • • • Outside of the vessel Not subject to pressure 10 or 5 mm resolution Linear- or non-linear Version Standard 3 -wire version 2 -wire 4. . 20 m. A version Max 350° C media temperature 316 steel EEx ia / EEx d / CE In combination with HART-Transmitter 20 m. A / 100% 4 m. A / 0%

Applications ü Food industry ü Chemical industry ü Offshore applications ü Petro and Oil and Gas Industry ü Pharmaceuticals ü Hydraulic and thermal power plants ü Shipbuilding ü Textile industry ü Wasser tanks and water treatment ü Etc.

Operational area • Pressure ratings PN 6 … PN 630 • Media temperatures -40°C … +400°C • Densities > 0. 30 g/cm³ • Materials 316 / 316 L 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 250 V / 1 A 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 4 - 20 m. A 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 ü American Bureau of Shipping ü Det Norske Veritas ü Germanischer Lloyd ü Lloyd’s Register of Shipping ü Polski Rejestr Statkow ü Russian Maritime Register of Shipping ü Registro Italiano Navale ü Bureau Veritas

References Visual Level Indicators Tank Level Indicators Cryogenic- and Special Valves Shell NSW Air Liquide ABB HDW Linde Krupp-Uhde Atlas Copco Cern Air Liquide Marlog Messer Cryotherm Snambrogetti Fincantieri BOC (England) Foster Wheeler Mazagon Air Products Linde GRSE INFN/LNN Kvaerner IPP Axima TIFR Sulzer Friotherm Nippon Sanso Caliqua Praxair NIFS

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

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