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Bently Nevada 135031-01 is a rack interface I/O module in the Bently Nevada 3500 system, mainly used for vibration monitoring and signal management of industrial rotating equipment. It connects sensors and systems to ensure real-time data transmission and supports both analog and digital signals.

The working temperature range of this module is -30 ° C to+65 ° C, the storage temperature is -40 ° C to+85 ° C, and the size is approximately 241.3 x 24.4 x 99.1 mm.

Compatible with external communication processors such as TDXnet and TDIX, suitable for equipment protection in industries such as oil and gas, power generation, etc.

Manufacturer Bently Nevada

Type Rack Interface I/O Module

Working temperature -30 to+65 ° C

Storage temperature -40 to+85 ° C

Dimensions (HxWxD) 241.3 x 24.4 x 99.1 mm

Used for condition monitoring of rotating machinery such as turbines, compressors, pumps, etc., managing input and output signals, and preventing fault shutdowns.

Supports remote communication via modem interface to enhance system reliability, often integrated with the 3500/20 series.

1.1.1 Research Background

In recent years, with the development of national industrial science and technology, the demand for non-contact measurement applications has become increasingly evident. Non contact measuring devices such as measuring displacement and vibration, as well as safe operating conditions, are increasingly being valued. By using the principle of eddy current effect for non-contact measurement of displacement, vibration, etc., eddy current detection has a series of advantages, such as good linearity and no interference from non-conductive media. Therefore, in recent years, non-contact measurement of eddy current has been widely applied.

The first combination of eddy current effect and measurement method was proposed by D.E. Hughes in his experiment in 1879. It was not until the 1940s and 1950s that a testing method and technology began to form, as the Rentique Institute in Germany and Bently Nevada in the United States continued to study the basic principles of eddy current sensors. Subsequently, related products and equipment based on the principle of eddy current appeared. The current application of eddy current equipment can be divided into two aspects. One part is used in monitoring and protection systems, where high technical indicators such as linear measurement range, reliability, and stability of eddy current sensor equipment are required. The other part is used in testing instruments, where high technical indicators such as accuracy, linearity, and resolution are required. With the development of industrial production and the improvement of related scientific and technological levels, the requirements for testing instruments are becoming increasingly high. Capacitive sensors have been used in many occasions in the past. The fatal weakness of capacitive sensors is that the measurement data results are easily affected by changes in the medium between the sensor itself and the measured conductor, and the installation conditions of the sensor are harsh, which limits the practical application of such sensors. This article uses PSoC chip as the sensor core, and proposes a solution 4 to further improve sensor accuracy based on eddy current sensor technology, including linearization processing methods and methods to improve sensor stability.

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