The following 3 types are high precision units with relatively low radiant intensity diffracted through double crystals. It is mainly used to measure the orientation of quartz wafer and other single crystal materials with a high precision. All technical specifications of this series conform to China Standard and coincide with similar foreign products.

Type DX-3: Accuracy±15″, min.reading15″in the scale display.

Type DX-4: Accuracy±15″, min.reading10″ in the digital display.

Type DX-4A: Accuracy±15″, min.readingin 1″in the digital display.

Other technical data are the same as in detail below:

Specifications

Input power supply : Single phase AC220V,50Hz,0.5kW.

X-ray tube : Cu target,air cooling with fan.                     

Max.rating : 30kV,5mA.

Detector: Geiger counter.

Time constant : 0.4, 0.8 sec.

Measuring angle range : 2θ=－10~120°，θ=－10~60°.

Angle reading : 2θ：1°min andθ：1°min on scale marking;  degree, minute and second on digital display.

Angle adjustment : Digital display is presetable at any angel.

Main shutter : Manual operation.

Display panel : Display of angle and radiant intensity.

Accessories : Vacuum chuck ceramic type and strip type sample holder. The spring type and bulk sample holder are optional.

Monochromator : built in.

Total accuracy : ±15″.

External dimensions:1140(L)×650(D) ×1100(H)mm.

Weight : 300kg.ry