The benchtop X-ray diffractometer is a core instrument in the field of material analysis, widely used for phase analysis, crystal structure characterization, and more. Its operational accuracy and stability rely on systematic daily maintenance. Scientific maintenance measures can not only extend the equipment's lifespan but also prevent detection interruptions due to failures, ensuring data reliability.

1. Maintenance of the X-ray Generation System

This is the core of instrument upkeep. The high-voltage generator requires a stable working environment: room temperature should be controlled between 20-25°C, and humidity should be ≤60% to prevent moisture-related aging of high-voltage components. Before each startup, check the cooling system to ensure the coolant level is within the marked range and the fluid is clear and free of impurities. Replace the deionized water and clean the filter weekly to prevent pipe blockages that could lead to anode target overheating. Anode target maintenance should follow the "gentle use, gentle stop" principle, avoiding frequent starts and stops that cause target surface damage. For long-term idle periods, power on the tube to preheat for 30 minutes monthly to prevent target materialoxidation.

2. Cleaning and Calibration of the Diffraction Optical System

This aspect should not be neglected. The incident and receiving slits should be wiped weekly using a lint-free cloth moistened with anhydrous ethanol to remove dust and sample residue, preventing slit clogging which can cause abnormal diffraction peak intensity. The goniometer is the heart of precision; check its rotational smoothness monthly, lubricate the guide rails with appropriate oil, and ensure the angular reproducibility error is ≤0.002°. The sample stage must be cleaned after each use. If powder samples were analyzed, use a soft brush to clean residual powder to prevent it from entering the goniometer's interior and causing mechanical jams.

3. Maintenance of Detectors and Electronic Systems

Attention to detail is crucial here. Scintillation detectors should avoid direct strong light exposure. Cover them with a dust cover promptly after each shutdown. Check the high-voltage line connections of the detector quarterly to prevent poor contact that introduces signal noise. Regularly dust the data acquisition card and interfaces to avoid electrostatic interference. Perform a signal calibration annually to ensure accurate diffraction peak positions. Regularly back up instrument software data and system configurations. Unauthorized software installation is prohibited to prevent system crashes and data loss.

4. Key to Fault Prevention: Establishing a "Daily Inspection + Periodic Calibration" System

Before daily startup of the benchtop X-ray diffractometer, confirm the status of key components such as the high-voltage switch and cooling system, and record parameters like startup voltage and current. If abnormalities such as peak shifts or sudden intensity drops occur during measurement, stop immediately for troubleshooting. Invite professional personnel for a comprehensive calibration every six months, focusing on verifying X-ray intensity, goniometer accuracy, and detector response to ensure the equipment complies with metrological standards like JJG 629.

5. Safety Maintenance as a Fundamental Requirement

Operators must wear lead protective gloves and safety glasses during operation to avoid X-ray radiation exposure. Flammable materials are prohibited around the benchtop X-ray diffractometer, and dedicated fire extinguishing equipment should be available. Establish a detailed equipment maintenance log to record maintenance times, activities, and fault resolutions, providing data support for long-term stable operation.

The TDM-20 Benchtop X-ray Diffractometer from Dandong Tongda Science& Technology Co., Ltd. is engineered to meet all your material analysis requirements. Inquire now to discover the solution for your lab.