Contenido

La termografía es una técnica que permite determinar temperaturas a distancia y sin necesidad de contacto físico con el objeto a estudiar. La termografía permite captar la radiación infrarroja del espectro electromagnético, utilizando cámaras térmicas o de termovisión"). Conociendo los datos de las condiciones del entorno —humedad y temperatura del aire, distancia a objeto termografiado, temperatura reflejada, radiación incidente— y de las características de las superficies termografiadas como la emisividad se puede convertir la energía radiada") detectada por la cámara termográfica en valores de temperaturas. En una termografía, cada pixel corresponde con un valor de medición de la radiación; con un valor de temperatura. A esa imagen se le puede definir como radiométrica.

Applications in predictive maintenance

In the industrial field, infrared thermography is used as a predictive maintenance technique to identify hot spots in electrical panels, motors, transformers and bearings. This practice allows overloads, faulty connections or lubrication problems to be detected before critical failures occur.[4]​.

Thermographic analysis is based on the study and interpretation of thermographies, these having been carried out under known and useful conditions for the purpose (there are many standards for very different inspections).

In a simple way we can know the radiation of the thermographed surfaces and thereby estimate the temperatures; whether they are a pipe, piece, machinery, enclosures, etc.

By carrying out the complete thermographic study, a check can be carried out on both enclosures, machinery and distribution systems, which can achieve:

The study of distribution systems can warn of energy losses that occur due to poor insulation, breakage or poor gearing.

By studying the envelope in buildings we will be able to know and/or estimate many of the building problems: energy losses, lack of tightness, condensation, humidity, mortar and tile adhesion problems, sunlight and sun-air temperature, etc.