Copyright SwissFlow B.V. Product Presentation Liquid Flow Sensor Model 800 Copyright SwissFlow B.V.

Presentation Overview Introduction Technology Construction Specifications Markets / Applications Summary Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Introduction Flow Measurement Because of increasing quality standards and higher efficiency demands in processes the market for flow sensors is growing strong. The last decades many different technologies have been developed to measure flow. Each with specific dependencies and for a specific field of application. There is a large gap between high-end and general purpose instrumentation, where accuracy and price per unit form the main differences. Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Introduction Flow Measurement SwissFlow has pioneered in developing technology to make a combination of reliability, high accuracy, long lifetime in one instrument. With the very competitive price level the instrument is available for every field of application. It therefore meets all the demands of the markets. Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Introduction Company History 1990 Foundation Industrial Supply B.V. SwissFlow technology patented Introduction of SwissFlow 800 sensor 1996 Introduction high pressure sensor 1997 Introduction batch counter/controller 2000 Company name changed to: SwissFlow B.V. Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Technology Type 800 The SwissFlow sensor, type 800, is designed to measure liquid flows for a large Liquids variety of liquids. Turbine The flow is measured by a turbine in the flow path. The rotation of the turbine is detected and converted into a pulse output. Straight This flow measuring principle is very forward straight forward and has proven itself in a large number of applications. Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Technology Reliable Reliability is one of the reasons to select this principle, but this unique sensor Accuracy also provides an outstanding accuracy. This sensor also distinguishes itself from Life time others on life time. With any mechanical principle there is a restricted life time caused by internal friction. The turbine in the sensor is designed to be free from friction. Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Features The SwissFlow sensor can be installed in any angle or position The SwissFlow sensor has an excellent resistance to limescale Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Construction The patented SwissFlow technology is based on a small rotor, weighing only 0,04 gram. The material used is Vectra, a liquid crystal polymer selected because of it’s low weight and excellent chemical and thermal resistance. Front view Side view Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Construction The rotor is placed in a PVDF housing. At the inlet of the housing a swirl in the fluids pattern is generated. This controlled swirl is caused by a series of flow formers. Front view Flow Former Side view FLOW Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Construction The swirl is directed to the rotor blades and this will cause the rotation. Due to the low weight, the rotor will be able to float in the flow stream. The rotor will be lifted from its axis and will start to revolve proportional to the flow without friction. Copyright SwissFlow B.V.

Integrated Electronics Construction The rotation is detected using an infrared beam. The rotor is interrupting the infrared signal and this will provide directly the pulse output. The infrared beam is generated by a diode and detected by a photo transistor on the integrated electronics. Rotation Detection Integrated Electronics Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Construction The electronics is placed and fixed around the rotor housing. With O-rings the elements are placed in an outer housing. This outer housing is also made from PVDF and shields any external infrared light from the electronics. The two parts of the outer housing are ultrasonically welded together. Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Specifications Flow range 0,5..20 l/min* Accuracy ±1,0 % of reading Reproducibility ±0,3 % of reading Liquids translucent liquids / water, chemicals, oils Operating Pressure max. 16 bar Temperature -20..90°C Viscosity range up to 1000 Cst * Based on water at 20 °C Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Specifications Output 100 - 2000 Hz Sensitivity ±6000 pulses / liter Signal form Square wave Amplitude See power supply Power Supply 5 - 24 Vdc, 12 - 36 mA Electrical connection 3 wire flat cable, 15 cm Process connections 3/8” BSP male Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Specifications Pressure drop curve Copyright SwissFlow B.V.

Markets / Applications Beer & Beverages Hot /cold Water Appliances Distribution Measurement Chemical Dosing Equipment Medical Equipment Hydraulic Systems Automotive Copyright SwissFlow B.V.

Copyright SwissFlow B.V. Summary High Accuracy and Repeatability High Resolution; 6000 pulses per litre Wide Measuring Range For Liquids with 1 to 1000 Cst Excellent Chemical Resistance Universal Applicability No Maintenance, free from wear Copyright SwissFlow B.V.