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Gold Testing Machine for Jwellery Hallmarking : XAN 250

Bath Analysis Coating Thickness: Xan 250 Testing Machine

The high-end measurement system Fischerscope X-Ray XAN 250 was developed specifically for high-precision analysis of precious metals as required for Hallmarking and assay offices. Gold testing machine in assaying centres: XAN250 is engineered using best available techniques. These are high performance X-ray fluorescence measuring instruments widely used for fast and non-destructive material analysis and coating thickness measurement. Compact sized these devices are acclaimed for high performance, longer service life and accurate measurement.

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Gold Testing Machine : XAN 250

These are available in two different range including XAN 250 and XAN 252.

These are user friendly devices acclaimed for compact size and consistent performance.

Our devices are acclaimed for their quick and easy sample positioning and consistent performance.

These are fitted with the X-ray source and semiconductor detector which are further located in the instrument‘s lower chamber.

Engineered under the firm direction of experienced quality controllers, these are fitted with the integrated video-microscope with zoom and crosshairs simplifies sample placement which further allows precise measuring spot adjustment and ensure clear presentation of measurement data on a PC with the help of powerful and user-friendly WinFTM® software.

These are designed and developed in accordance with German regulations "Deutsche Röntgenverordnung-röv“.

Typical areas of application are:

Measurement of functional coatings, starting from a few nanometers

Electronics and semiconductor industries

Trace analysis for consumer protection, e.g. Lead content in toys

Analysis of alloys with highest requirements of accuracy in the jewelry and watch

Industries and in metal refineries

Research in universities and in the industries

General Specification

Intended use:Energy dispersive X-ray fluorescence measuring instrument (EDXRF)

to determine thin coatings and alloys

Element range:Aluminum (13) to Uranium (92), up to 24 elements simultaneously

Design:Bench-top unit with hood opening upwards opening hood

Measuring direction:Bottom-up

X-Ray Source

X-ray tube:Micro focus tungsten tube with beryllium window

High voltage:Three steps 10 kV, 30 kV, 50 kV

Aperture (Collimator):4x changeable: Ø 0.2 mm (7.9 mils), Ø 0.6 mm (23.6 mils), Ø 1 mm (39.4 mils)

, Ø 2 mm (78.7 mils), others on request.

Primary filter:6x changeable: Ni, free, Al 1000 μm (39.4 mils); Al 500 μm (19.7 mils);

Al 100 μm (3.9 mils); Mylar® 100 μm (3.9mils).

Measurement spot:Depending on the measuring distance and on the aperture, the actual

measurement spot size is shown in the video image.Smallest measurement

spot: approx. Ø 0.3 mm (11.8 mils)

X-Ray Detection

X-ray detector:Silicon Drift Detector (SDD), peltier-cooled

Resolution (fwhm for Mn-Kα):≤ 160 eV

Measurement distance:0 … 25 mm (0 … 1 in) Distance compensation with patented DCM method

for simplified measurements at varying distances. For particular applications

an additional calibration might be necessary.

Sample Alignment

Sample positioning:Manually

Video microscope:High-resolution CCD color camera for optical monitoring of the measurement

location along the primary beam axis,Crosshairs with a calibrated scale (ruler)

and spot-indicator,Adjustable LED illumination.

Zoom factor:Digital 1x, 2x, 3x, 4x

Sample support stage

XAN 250XAN 252

DesignFixed sample supportManual Operable X/Y-stage

Usable sample placement area310 x 320 mm (12.2 x 12.6 in)310 x 320 mm (12.2 x 12.6 in)

Max. sample weight13 kg (29 lb)2 kg (4.4 lb)

Max. sample height90 mm (3.5 in)174 mm (6.8 in)

Electrical Data

Power supply:AC 115 V or AC 230 V 50 / 60 Hz

Power consumption:Max. 120 W ,without evaluation PC

Protection class:IP40


XAN 250XAN 252

External dimensions
Width x depth x height [mm]:
403 x 588 x 365 mm403 x 588 x 444 mm

(16 x 23.2 x 14.4 in)(16 x 23.2 x 17.5 in)

Weight:Approx. 45 kg (99 lb)Approx. 45 kg (99 lb)

Environmental Conditions

Temperature Operation:10 °C – 40 °C / 50 °F – 104 °F

Temperature0 °C – 50 °C / 32 °F – 122 °F


Admissible air humidity:≤ 95 %, non-condensing

Evaluation Unit


Software:Standard: Fischer WinFTM® BASIC including PDM®,

Optional: Fischer WinFTM® SUPER


XAN-250XAN 252

CE approval:EN 61010EN 61010

X-Ray standards:DIN ISO 3497 and ASTM B 568DIN ISO 3497 and ASTM B 568

Approval:Fully protected instrument with type approval according to the German regulations "Deutsche Röntgenverordnung-RöV".Individual acceptance inspection as a fully protected instrument according to the German regulations "Deutsche Röntgenverordnung-RöV".

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