Level measurement

105 Overview measuring principles

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Electromechanical level system A weight is lowered on a measuring tape. As it meets the surface of the bulk solids, the tensile force of the weight is reduced. This change is recognized, the instrument reverses the sense of rotation of the motor and rewinds the tape. A pulse generator counts the rotations in a non-contact manner as the weight is lowered. Each counted pulse corresponds to an exactly defined distance. If this distance is deducted from the overall distance (height of the vessel), the level results. Radiometry The gamma source, a cesium or cobalt isotope, emits radiation which is attenuated as it passes through materials. The measuring effect results from the absorption of radiation by the product as the level changes. The measuring system consists of a source and a compact transmitter as a receiver.

Silopilot Robust system for safe measurements also in extremely dusty environments and low density media. Unaffected by product properties and DC value.

Gammapilot Compact transmitter in different measuring lengths, adaptable to the measuring range. Non-contact measurement from outside, for all extreme applications,

aggressive media:

• Unaffected by media • Any process temperature • Any process pressure • Unaffected by gammagraphy (Modulator)