LVDT(Linear Variable Differential Transformer)consists of a primary coil and two secondary coils symmetrically space on a cylindrical form. A free-moving rod-shaped magnetic core inside the coil assembly provides a path for the magnetic flux linking the coils. When the core is moved, it produces a differential voltage output that varies linearly with changes in core position. This technology has now been widely applied to measure different linear position, e.g. tension, expansion, diameter, conicity thickness, eccentricity, differential pressure, liquid level, force, weight and etc. The LVDT has the features of frictionless, low power, high resolution and long duration, which can be applied in harsh environment like high temperature, high humidity and dust.
Spring-loaded DC-LVDTs are designed for a wide range of position measurement and dimensional gaging applications GGD19 Series product adds a reset spring and a sleeve bearing to the LVDT based on the GD19 series, this rebound type structure provides a great convenience in installation for the customers. There has integrated a standard signal module inner in the products, the DC standard signal such as 0-10VDC, 4-20mA will be more suitable for interface with the general digital controller PLC and Computer Data Acquisition System.
This series provide highly reliable, contactless operation with high resolution, excellent repeatability,dynamic and response, with the added convenience and simplicity of DC input and precalibrated high level output.
GGD19 (spring-loaded type)
● Ranges of 2.5~ 100mm ● DC input ● High level output ● Non-linearity less than to ±0.25% or equal ● Industry-standard 19mm diameter ● Through-bore design ● Frictionless operation ● Dynamic response ● Rebound structure, convenient for using
0~2.5mm to 0~100mm
4~20mA 0~5V 0~10V
Pneumatic cylinder position sensing
Valve position sensing
Hydraulic cylinder position
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