X-ray Diffractometers and X-ray Fluorescence Analyzers Testing

Accurate inspection is implemented for X-ray diffractometers and fluorescence analyzers in accordance with applicable metrological standards. Key performance indicators including measurement precision, resolution, repeatability, positioning accuracy, diffraction angle accuracy and intensity accuracy of the analyzers are tested systematically. Comparative measurement of standard test pieces and verification tests with standard samples evaluate the equipment performance in industrial inspection, material analysis and product quality control, meeting technical demands from precision manufacturing, aerospace and scientific research fields.

Inspection Items

X-ray air kerma rate, X-ray dose, dose monitoring, ambient radiation level, ambient dose equivalent rate for X and γ rays, external surface radiation dose of the system, X-radiation dose rate, radiation protection monitoring for X-ray diffractometers and fluorescence analyzers, X/γ radiation dose rate, X/γ radiation protection, site dose testing, ambient dose equivalent rate for radiological protection of medical diagnostic X-ray machines, X-radiation level, hygienic protection testing for X-ray diffractometers and fluorescence analyzers

Inspection Standards

1. GBZ 115-2002 Hygienic Protection Standard for X-ray Diffractometers and Fluorescence Analyzers

Inspection Equipment

X-ray measurement system/analyzer, standard gauge blocks/samples, coordinate measuring machine, precision calibration device, computer data processing system, radiation protection equipment

Key Indicators and Inspection Requirements

1. Tube voltage: error ≤±5%

2. Tube current: error ≤±10%

3. Exposure time: error ≤±5%

4. Penetration capacity: capable of resolving standard test blocks

5. Resolution: ≥2.0 LP/mm

6. Radiation leakage: ≤2.5 μSv/h (measured at 5 cm distance)

Inspection Methods and Implementation Points

1. Inspection is conducted in compliance with JJG 40-2019

2. Tube voltage test: 5-point sampling with a high voltage divider

3. Tube current test: measured with a current clamp meter

4. Penetration capacity test: verified using standard steel test blocks

5. Resolution test: completed via imaging of test patterns

6. Radiation test: multi-point measurement with a dosimeter

Precautions

1. Operators shall hold valid certificates and wear personal dosimeters

2. Warning signs shall be posted in the working area

3. Reliable equipment earthing is required

4. Check the cooling system before testing

5. Raise voltage gradually during startup

6. Turn off high voltage after inspection completion