Balluff launches magnetostrictive linear position sensor for explosion hazard areas

BTL DEX ApplikationBTL-DEX_Applikation. (Image source: Balluff)Balluff has introduced the new, certified position measuring system BTL7-T500, aiming to achieve safe operation in explosion hazard areas in refineries and petrochemical plants

Control and shut-off valves are used for oil and gas transmission in refineries and petrochemical plants. The valve position is regulated using the position measuring systems, because they are extremely reliable, especially in very harsh environments.

With its many international approvals, such as ATEX and IECex, the BTL7-T500 aims to provide a broad range of applications, high reliability and safe operation in explosion hazard areas of Zone 0 and Zone 1. This means for example it can be used as well for continuous level measurement in refinery tanks.

The Profibus interface offers great flexibility. The position measuring system can be quickly adapted, saves time in installation and means rapid diagnostics of possible errors. This shortens commissioning time of systems and maintenance when service calls are needed. A single cable suffices for hookup (BUS-in-out, power).

The non-contact and thereby wear-free magnetostrictive measuring system in the stainless steel housing with IP 67 protection is not only extremely insensitive to contamination, but also shock rated to 100g. It also withstands vibration up to 12g. With a resolution of 1µm and repeat accuracy of 10µm it operates with extreme precision and is also the ideal solution when position and speed measurement needs to be performed simultaneously in a system.

BTL linear magnetostrictive transducers from Balluff in the rod style and installed in hydraulic cylinders have for decades proven their reliability in the most demanding areas of application. The magnetostrictive operating principle allows it to be installed in hermetically sealed housings. The position information is transmitted without contact via magnetic fields through the housing wall into the interior of the sensor.

Alain Charles Publishing, University House, 11-13 Lower Grosvenor Place, London, SW1W 0EX, UK
T: +44 20 7834 7676, F: +44 20 7973 0076, W: www.alaincharles.com

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