Eddy current sensor dynamic calibration device

Abstract

The invention provides an electric eddy transducer dynamic calibration device which comprises a vibration platform, a sensing disc, a standard acceleration transducer, an installation and adjusting mechanism, a base and a supporting rod. The installation and adjusting mechanism comprises an installation plate for containing an electric eddy transducer and a position adjusting mechanism for driving the installation plate to move up and down, and the position adjusting mechanism comprises an upper support, a lower support, an adjusting screw rod, a ruler and a rotary knob. The adjusting screw rod and the ruler are connected with the upper support and the lower support, the rotary knob drives the adjusting screw rod to rotate so as to enable the lower support to move up and down, the adjusting screw rod is parallel to the ruler, the top end of the ruler is fixedly connected with the upper support, the ruler is in slidable connection with the lower support, the upper support is installed on the supporting rod in a rotatable mode, a locking mechanism which locks the position of the upper support is arranged on the upper support, the lower support is installed on the supporting rod in a slidable and rotatable mode, a fastening mechanism which fastens the position of the lower support is arranged on the lower support, and the installation plate is fixed on the lower support. The electric eddy transducer dynamic calibration device has the advantages of enabling the electric eddy transducer to precisely align at a testing platform, and being high in calibration precision.

Description

technical field [0001] The invention relates to the field of measurement and testing, in particular to a calibration device for an eddy current sensor. Background technique [0002] The eddy current sensor is a non-contact measuring probe, which is widely used in the vibration monitoring system of rotating machinery in petroleum, chemical, power generation and other industries. [0003] Chinese patent No. 201120564333.9 discloses a dynamic calibration device for eddy current sensors based on an accelerometer calibration system, including a fixed bracket, and an upper disk and a lower disk are fixed on the pillars of the fixed bracket; the upper disk is set for The clamping sleeve for clamping the eddy current sensor, the lower disk fixes the excitation table, the standard voltage accelerometer is set on the excitation table, the circular test platform is fixed on the upper end of the standard piezoelectric accelerometer, the circular test platform and the upper disk Corresp...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of inaccurate correspondence between the eddy current sensor and the test platform and low calibration accuracy existing in the existing eddy current sensor calibration device, the present invention provides an electric eddy current sensor that can be accurately aligned with the test platform and has high calibration accuracy. Calibration device for eddy current sensors

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