MAGNETOSTRICTIVE

MAGNETOSTRICTIVE High precision level measurement for liquid media on the magnetostrictive measuring principle Area of application The KSR FFG-T-... level sensors act as a measurement pick-up for the continuous measurement of fluid levels and are based on determining the position of a magnetic float by the magnetostrictive principle. Working principle The measuring process is triggered by a pulse of current. This current generates a circular magnetic field along a wire of magnetostrictive material stretched in the probe tube. A float with permanent magnets is used at the point being measured (liquid level). This magnetic field from the float twists the wire. The superimposition of the two magnetic fields triggers a mechanical wave in the wire. At the end of the wire, in the sensor housing, this is converted into an electrical signal by a piezo-ceramic transducer. Measuring the running time makes it possible to determine the starting point of the mechanical wave, and thus the float position, with great precision. Technical benefits The simple functional principle enables a very wide range of use. Constant sensing of fluid levels regardless of physical/chemical changes of state in the medium such as: foaming, conductivity, dielectric number, pressure, vacuum, temperature, vapours, condensation precipitation, bubbles, boiling effects, changing density. Transmission of signal over large distances. Simple fitting and commissioning, one-off balancing, no re-calibration required Interface level measurement and overall level From density > 50 kg/cubic metre. Limits of use: T = -2000 °C to +2000 °C P = vacuum to 100 bar Density > 400 kg/cubic metre The high availability of corrosion proof materials allows its use in all areas of industry: Chemicals, petrochemicals, natural gas, pharmaceuticals, offshore engineering, shipbuilding, power stations, energy plant, mechanical engineering, process water treatment, drinking water treatment, drinks and food stuffs industry. Solutions for specific processes of possible. More Info Price

REED SWITCH CHAIN TECHNIQUE

REED SWITCH CHAIN TECHNIQUE Working principle A float with a built-in magnet moves with the surface level of the medium being measured along a guide tube in which a row of small reed switches are installed. In conjunction with a resistor chain an output signal can be generated which is proportional to the float position and thus to the level of liquid. Various resolutions are available and can reach up to 6.35 m depending on the application. Versions which work on the magnetostrictive principle can provide resolutions down to below 1 mm. Area of application Suitable for almost all liquids. A constant indication of liquid level regardless of foam or changes in the dielectric number, in the conductivity, the pressure or the temperature. Special models can carry out interface level measurements. Temperature -50 °C to +120 °C to +250 °C with special versions) Pressure From vacuum to 40 bar (4 MPa). (Versions for higher pressures available.) Materials Stainless-steel, Titanium, Hastelloy, PVC, polypropylene, PVDF, PTFE, Teflon and E - CTFE coatings. Output Continuous analogue resistor output (potentiometer circuit), which can be converted with a suitable KSR Kuebler measurement transformer (e.g. into a 4 - 20 mA signal, HART, Field Bus etc.) Fitting and Types Flange mounted or screw-in thread, with installation from below or above. For the angled version the inlet is at the side. Length of the guide tube up to 12,000 mm in one piece and up to 25,000 mm made from several parts. Versions are available for the foodstuffs industry. At the side: Flange mounted or screw-in thread. More Info Price