The Bentley 330980-71-00 preprocessor is a high-performance displacement sensor assembly commonly
used in eddy current effector systems. Here is a detailed description of the preprocessor:

First, the working principle

The Bentley 330980-71-00 preprocessor operates on the principle of eddy current effect. When the power is
turned on, a high-frequency current signal is generated inside the preprocessor, which is sent through the cable
to the probe head, creating an alternating magnetic field around the head. When the measured metal body is
near this magnetic field, an induced current is generated on the metal surface, that is, an eddy current. This
eddy current field will also produce an alternating magnetic field in the direction opposite to the head coil,
 which will change the amplitude and phase of the high-frequency current of the probe head coil due to its
reaction, that is, change the effective impedance of the coil. This change is related to the conductivity,
permeability, size, distance between the metal conductor and the probe, coil excitation current intensity and
frequency. By measuring these changes, the displacement, vibration and other parameters of metal objects can
 be measured.

Second, product characteristics

High precision: The Bentley 330980-71-00 preprocessor has high precision displacement measurement
capability, which can accurately reflect the displacement change of the measured body.

Non-contact measurement: The use of non-contact measurement, avoiding the traditional contact
measurement may bring wear and error.

Strong anti-interference ability: It has good anti-interference ability and can work stably in a complex
 environment.

Fast response speed: It can quickly respond to the displacement change of the measured body to achieve
real-time monitoring.

Wide range of application: can be used to measure the displacement of metal conductors, vibration and
other parameters, widely used in electric power, petroleum, chemical industry, metallurgy and other industries.

3. Application fields

Bentley 330980-71-00 preprocessor is usually used for long-term real-time monitoring of axis displacement,
shaft vibration, shaft speed and other parameters of large rotating machinery. For example, the preprocessor
can play an important role in condition monitoring and fault diagnosis of steam turbines, water turbines,
generators, blowers, compressors and other equipment. By monitoring the displacement and vibration
parameters of the equipment in real time, the working conditions and failure causes of the equipment can
be analyzed, which provides strong support for the protection and predictive maintenance of the equipment.

4. Precautions

When using the Bentley 330980-71-00 preprocessor, it should be ensured that the tested body is a metal
conductor, otherwise the eddy current effect cannot be generated.

During installation, it should be correctly installed and debugged according to the product instructions to
ensure the accuracy of the measurement results.

Check and maintain the sensor system regularly to ensure its long-term stable operation.

In summary, Bentley 330980-71-00 preprocessor is a high-precision, non-contact, strong anti-interference
 ability, fast response displacement sensor assembly, with a wide range of application fields and important
practical value.

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