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Electronic Torque Tubes



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Electronic Torque Tubes

TB300 Series digital transmitters are level instruments that utilize the buoyancy exerted on a displacer when immersed in a liquid. The buoyancy on the displacer is proportional to the liquid level and operates on an elastic torque tube which, transforming the applied force in a rotary movement, operates the magnet and consequently the electronic transmitter. This system is exceptionally accurate and friction free as the torque tube acts also as sealing device towards the pressure of the process fluid whose level is being measured.
The specific feature of the TB300 transmitter is to detect the rotational displacement of the tube by means of an innovative contactless (Hall-effect magnetic) system. The detection system eliminates all the mechanical coupling components between the unit of measurement and the electronic transmitter, therefore eliminating all adverse effects due to vibration, temperature at mechanical deterioration and incrustations.
The TB300 series can support various protocols depending on the requirements of the control system: 4-20mA, HART®, FoundationTM Fieldbus, Profibus PA.
ATEX versions are also available.
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E - Torque Tube TB300
Trasmettitori di livello digitali serie TB300