Measurement principle and application characteristics

The measurement method employed is transmission absorption measurement, where the direct physical quantity measured is the areal density (basis weight). When X-rays penetrate a material, they are reflected, scattered, or absorbed by the material, resulting in some attenuation of the X-ray intensity. The amount of attenuation is directly proportional to the areal density of the material being penetrated.

When the bulk density of the material remains constant or is highly consistent, the thickness of the material can be measured by converting the bulk density (areal density = density * thickness).

The X-ray thickness gauge is a low-energy radiation device, and the X-rays can be turned on and off via the power supply, generally requiring no special shielding.

X-ray thickness gauges typically use an O-type scanning frame.

X-ray measurement sensor

The X-ray emitter utilizes a dual closed-loop control system, ensuring long-term stability of the X-ray intensity and high measurement repeatability. The X-ray detector incorporates advanced preamplifier circuit technology from Germany, offering a high signal-to-noise ratio.

The X-ray emitter features a proprietary slit-type X-ray collimation channel and a small spot design. Combined with a high signal-to-noise ratio detector and sophisticated software algorithms, it delivers superior spatial resolution accuracy and enhanced defect recognition capabilities.

Key Features and Powerful Functional Modules of the X-ray Areal Density Gauge/Thickness Gauge:

A next-generation online measurement software system, meticulously designed by software architects and big data experts, offering more robust functionality and more scientific algorithms.

Supports scanning measurement, fixed-point measurement, and cyclic fixed-point measurement, with seamless switching between scanning and fixed-point modes.

Real-time display of rich measurement curves, including single/multiple profile lines, partition lines, and trend lines, along with various quality data. Comprehensive full-value data storage in Excel format based on a database, enabling historical data query, traceability, and historical curve replay.

Professional-grade SPC statistical analysis, automatic generation of quality reports, and customization based on customer requirements.

Multiple process control solutions, real-time process monitoring, five-line quality control, multi-level warnings and alarms, and out-of-limit marking. Supports closed-loop automatic control, integration with customer MES systems, and multi-rack same-point tracking measurement.

Independently developed data acquisition and control boards, real-time communication systems, and CANOPEN bus communication transmission, ensuring high-speed measurement response.

Enhanced usability and user-friendly human-machine interface with one-click intelligent operation.

Application Fields

In-line measurement and control of surface density (thickness) consistency of plastic film, non-woven fabric, metal foil, rubber sheet, coil or coating.