Emerson EPRO PR9268/302-000  Electrodynamic Horizontal Sensors
Description:
PR9268/302-000 is Electrodynamic Horizontal Sensors with Armored 8m cable，with Harting Plug cable end. PR9268/302-000 cable is longer than PR9268/301-000.

PR9268/302-000 is dynamic sensors with the measuring coil as part of  the seismic  element,  moving in the field of the permanent magnet. Damping of the measuring elements is realised by damping cylinders resp. by external wiring and set to a value of approx. 0,6, resulting in a very linear characteristic over the entire frequency range. Measurements below the resonance frequency can be made with corresponding corrections of the amplitude responses. In case of too high vibration amplitudes, mechanical limit stops reduce the maximum amplitude of the seismic systems.    Each transducer is designed for one measuring direction (vertical or horizontal). Deviations of these directions will result in rest positions of the seismic mass  different  to  the  normal  positions which effects a reduction of the maximum vibration amplitude and the generation of additional spurious resonance’s.    When using sensors of the PR 9268/.. family, lifting currents may be fed directly into the measuring coil. However, this current must be decoupled from the measuring signal.   Measuring amplifiers of the MMS 6000 family are designed to support this operation and to supply lifting currents for absolute bearing vibration sensors.  

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