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ADVERTISEMENT FEATURE u Cover story


Measuring pressure and flow H


Founded in 1945, Huba Control develops, manufactures and markets components designed exclusively for the measurement of pressure and flow from its global headquarters in Würenlos near Zurich


uba’s pressure measurement technology includes pressure switches, sensors and pressure transmitters and with the


company’s clear focus on pressure measurement technology Huba is able to develop innovative products, covering an extensive range of applications for the optimisation of machine, system and plant processes. Huba’s in-house design and manufacturing


facilities have developed an innovative range of products across a broad spectrum of applications which incorporate the company’s own unique range of pressure measuring cells, diaphragms and special ceramic cantilever beams, making Huba Control a leading manufacturer of pressure transmitters, switches and sensors for measuring single pressure from -1 to 1,000 bar, differential pressure up to 25 bar and vortex liquid flow sensors from 0.5 l/min to 240 l/min.


Pressure TransmiTTers and eleCTroniC Pressure sWiTCHes Based on thick film technology developed by Huba Control, the Type 520, Type 522 and Type 540 transmitters together with the Type 521 electronic switch are available with WRAS approval with pressure ranges -1...9 bar / 0...2.5 - 60 bar up to 99°C. Able to withstand tolerable overloads of up


to five times full scale and rupture pressure of up to ten times full scale they are well suited for all drinking water applications and are available with a large selection of outputs, pressure and electrical connecters.


Pressure TransmiTTers WiTH sHiPbuilding aPProval The Type 522 and Type 527 pressure transmitters are available in standard pressure ranges up to 600 bar with tolerable overloads of up to five times full scale and rupture pressure of up to ten times full scale. The rugged construction of these compact transmitters makes them suitable for a wide range of applications and all have the following


8


approvals: Germanischer Lloyd; American Bureau of Shipping; Bureau Veritas; Det Norske Veritas; Lloyd’s Register ; and ATEX Approved


Pressure level TransmiTTers Huba Control’s range of pressure level transmitters now includes sensors that fit inside ¾”, 1” and 1 ¼” diameter pipes with standard pressure ranges of 0...0.1 - 16 bar and are available with analogue signals of 0...10V, 4...20mA and 10%...90% ratiometric outputs with optional temperature measurement as well as a digital output with temperature. The Type 711, Type 712 & Type 713


transmitters are available with cable lengths from 2m to 300m as standard and with various approvals including: IEC 68-2-27 Shock Accreditation; EN 61326-2-3 Electromagnetic Compatibility; IEC 68-2-6 Vibration Accreditation; Shipbuilding Approval; Ex- Protection; and UL 61010-1 Approval.


liquid FloW sensors Available with voltage, current and frequency output, the full range of flow sensors Type 200, Type 210, Type 212, Type 230, Type 235 and Type 236 are all based on Karman’s vortex trail principle. The sensors are available to measure liquid flow


rates from 0.5 l/min to 240 l/min in standard DN6, DN8, DN10, DN15, DN20, DN25 and DN32 sizes with a selection of pipe and electrical connections. With no moving parts the flow sensor is particularly well suited to applications such as


‘‘ The shedding of


vortices on a damming body in the flow is directly proportional to the speed of the flow


integral pump flow sensors for central heating boilers. The sensors are available to measure liquid with flow rates up to 240 l/min with optional temperature measurement and have 0...10V, 4...20mA, Frequency output with and without filter as well as Pulse output enabling a direct counting function.


Pressure TransmiTTer suiTable For use in mobile HydrauliC aPPliCaTions The Type 550 transmitter is suited for use in the harshest of conditions and incorporates the thick film technology developed by Huba Control, with a fully welded Stainless Steel measuring cell. The transmitter is available with IP67 or IP69K as well as a standard pressure tip orifice to prevent damage due to pressure spikes. The transmitters are available in standard


pressure ranges up to 600 bar with a ratiometric 10% - 90% output and are suitable for liquid media at -40...+125°C with up to three times full scale tolerable overload and six times full scale rupture pressure and is available with a variety of standard pressure and electrical connectors including Kostal SLK, Deutsch and Metri Pack. The unique construction of the transmitters


’’


meets the highest shock and vibration requirements of ISO 13766 Earth Moving Equipment, EN 13309 Construction Equipment, ISO 14982 Agriculture & Forestry and guarantees excellent EMC stability.


Huba Control www.hubacontrol.com September 2018 Instrumentation Monthly


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