Page 19

FeuerTRUTZ-International-2-2016

TECHNOLOGY AND TRENDS Thermally conspicuous components of machines, devices or systems are detected just as quickly … Next to conventional destruction-free test and measuring procedures of the technical diagnostics (visual inspection, ultrasound, vibration measurement, etc.), the IR thermography has established itself as measuring and inspection method in the industrial sector. Using mobile or stationary thermographic cameras, overheated locations (Hot Spots) on electrical and mechanical components can be detected beyond the regular inspection and continuous monitoring. With stationary thermographic systems an automatic alarm is issued by comparing threshold and limits values stored in a monitoring system. In production facilities and workshops, this makes a quick state control of pipelines, valves, machines, bearings, tools, dies, switch cabinets, electric cables, switches and other potentially dangerous system components possible. Overheated components may not only lead to damage that would be a hazard source for the operating personnel and cause fires, but would also be the reason for output losses. Thermographic examinations therefore increase operating safety and efficiency. They reduce operating costs – also because cleaning and maintenance intervals can be optimised. If all system areas are represented in detail, states deviating from standards can be recognised at a glance and documented in a thermal image (thermograph). Compared with other test and measuring procedures, Source: Milwaukee … as defective components in electric switchgear cabinets … Source: Testo Special equipment and technical knowledge required Even if it looks easy and the camera technology is getting even better, thermography is not digital photography. The picture itself as well as the interpretation and evaluation of the thermal images requires special tools, technical knowledge and experience. Without the evaluation and interpretation of a specialist, thermographs are only colourful pictures and therefore worthless. When taking the pictures, you already have to observe the boundary conditions and possible error sources otherwise one obtains incorrect results. This already begins with the thermal image quality. It primarily depends on the performance of … or dangerous cracks in bricked chimneys near to electric lines. thermography also has the benefit that measurements can be carried out contactfree and without danger from a distance. Systems and machines do not have to be switched off so that production operations can continue uninterrupted. Using the IR cameras specialised for gas detection, as already mentioned, gas escaping can be traced and made visible from a safe distance without the production process of a system being interrupted or having to shut down any systems. Disposal site fires also caused by chemical reactions or the biological degradation process can be prevented. Heat and glow nests are quickly detected on the IR camera display which is why the thermographic technology can also be used during and after a fire. Source: FLIR Systems FeuerTRUTZ International 2.2016 19


FeuerTRUTZ-International-2-2016
To see the actual publication please follow the link above