On-Line Film Thickness Measurement Systems
On-Line Film Thickness Measurement SystemsOn-Line Film Thickness Measurement Systems

X-Ray Non Contact On-Line Thickness Gauge System for Plastic Film

Download the On-Line Thickness Gauge PDF On-Line Thickness Gauge PDF

The modern production process requires faster and more accurate quality control technologies to improve the overall quality and ensure optimized production parameters. Qualitest’s On-line non-contact and non-destructive X-ray measurement and control system improves the quality of your products by providing real-time feedback of absolute or deviation from target thickness measurements.

The benefit of high speed measurement and vital statistical data is optimized production control; which leads to cost reduction and productivity increase for plastic sheet, film, foil or plastic coating production lines.

Qualitest On-line Film Thickness measurement systems are offered in three different standard precision ranges and are available in both O-Attenuation Calculation shaped and C-shaped frames. The standard effective scanning width is 59 inches (1500mm). Qualitest also offers customized solutions to meet most production requirements.

The measuring principle of the Online X-ray thickness gauge is based on X-Ray attenuation. When the X-ray travels through the material, it will attenuate due to absorption. The material thickness is determined by the change in X-ray intensity as the ray passes through the measured material.

Model Fix-point Precision (μm) Scanning Precision (μm) Scanning Width  (mm) Range of Measuring Thickness (mm)
QX01-S ±0.15μm~0.1%FS ±0.25μm~0.2%FS Application specific 0 ~ 5
QX02-S ±0.30μm~0.2%FS ±0.50μm~0.4%FS
QX03-S ±0.60μm~0.4%FS ±1.00μm~0.8%FS
X-Ray Source

The X-Ray source has a variable energy output from 4-10 kV, the low output energy makes the unit safe to operate. When the power supply is switched off the out put of X-Ray energy immediately stops. The X-ray source is housed in an oil filled stainless steel container which provides excellent protection. By adjusting the parameters of the X-Ray tube a wide range of material thickness can be measured.

X-Ray Detector

The X-Ray detector is the most critical component of the thickness gauge; our detectors are manufactured in-house under the strictest quality control to ensure stability and minimal temperature drift. The signal process module is designed with a thermostat to ensure stable signal output in all temperature conditions.

Attenuation Calculation

I =Ioe-μρx

In the equation:
I = Measuring intensity of transmitter after radiation goes through material
Io= Intensity before radiation goes through
μ = Mass absorption coefficient (m2/g)
ρ = Density of material
X = Material thickness (cm)  
ρX = Material quantification

For further information or to place an order for the On-Line Film Thickness Measurement Systems CLICK HERE, call us Toll-Free at: 1.877.884.TEST, or click on the "HOW TO ORDER" Button