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Application of infrared thermography technology in mining equipment maintenance: Heat is often an early sign of equipment damage or malfunction, which makes it a key performance parameter monitored in predictive maintenance (PDM) plans.

Technicians who perform predictive maintenance of infrared thermography imaging regularly check the temperature of key equipment, so that they can track the operating conditions of the equipment over time and quickly find abnormal readings for further inspection. By monitoring equipment performance and arranging maintenance when needed, the possibility of unplanned shutdowns due to equipment failures can be reduced, maintenance costs and equipment repair costs can be reduced, the life of equipment assets can be extended, and maintenance effectiveness and production capacity can be maximized.

Principles of infrared thermography technology

In 1800, William Herschel, a British astronomer, used a splitting prism to divide the sun's rays into monochromatic hues ranging from red to purple, measuring the thermal effects of different colors of light in turn. He found that when mercury thermometers moved beyond the boundary of red light, where the human eye could not see any light, the temperature was actually higher than in the red area.

Repeated trials have proved that there is indeed a kind of invisible "hot wire", later called "infrared", or "infrared radiation". Any object in nature, as long as the temperature is higher than absolute zero (-273.15C°), will emit energy in a very wide wavelength range in the form of electromagnetic radiation, generating electromagnetic waves (radiation energy).