LIQUI-FLOW® series L1 / L2 Mass Flow Meters / Controllers for liquids - Bronkhorst - #1

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> Introduction Bronkhorst High-Tech B.V., the European market leader in thermal Mass Flow Meters/Controllers and Electronic Pressure Controllers, has more than 25 years experience in designing and manufacturing precise and reliable measurement and control devices. With a wide range of instruments, Bronkhorst High-Tech offers innovative solutions for many different applications in many different markets. The instruments are made to customers’ specification, in various styles, suitable for use in laboratory, industrial environment, hazardous areas, semiconductor processing or analytical equipment. > LIQUI-FLOW® series L1 / L2 Bronkhorst High-Tech B.V. has been the pioneer in the field of micro to low flow liquid metering instruments based on a thermal measuring principle. The LIQUI-FLOW® Mass Flow Meter was designed to cover the range between 5 and 1000 g/h (Full Scale) in a compact instrument. The Flow Meter basically consists of a stainless steel tube without any moving parts or built-in obstructions. A heater configuration causes a temperature rise of typically 1°C. The unique thermopile sensor measures the temperature differences across the in- and outgoing legs of the measuring tube. The signal resulting from the ÄT is linear to the mass flow rate. Due to the benefits of the unique patented sensor, the L1/L2 series is attitude insensitive and suitable for fluids with low boiling points. The Mass Flow Meter contains no elastomer seals (welds only) and has a weatherproof (IP65) housing. > Liquid flow control Flow control is achieved by coupling a control valve to the Liquid Flow Meter. This control valve has a purge connection on top of the sleeve that enables easy elimination of air or gas when starting up the system. The electronic control function forms part of the normal circuitry in the flow meter, so the need for an external controller is eliminated. The control valve contains an elastomer (Kalrez) valve seat and has an IP65 rated enclosure. > LIQUI-FLOW® features �Ÿ thru-flow measurement �Ÿ insensitive to mounting position �Ÿ suitable for liquids with low boiling points �Ÿ super stable zero �Ÿ sterilizable �Ÿ weatherproof IP65 housing > Fields of application �Ÿ Semiconductor industry �Ÿ Biotechnological processes �Ÿ (Petro-) Chemical industry �Ÿ Food & Pharmaceutical industry �Ÿ Analytical laboratories LIQUI-FLOW® Series L1 / L2 Mass Flow Meters and Controllers for Liquids