Application

Thermography in maintenance

Almost every electrical fault announces itself through heat long before anything fails. A loose terminal, an overloaded cable, a damaged circuit breaker – all of these create contact resistances that heat up. With a thermal imaging camera you can find such spots during operation, without switching off the installation.

Typical applications

  • Control cabinets and distribution boards – detect loose or corroded terminals and unevenly loaded phases.
  • Motors and drives – make bearing damage and overload visible at an early stage.
  • Building envelope – document thermal bridges, missing insulation and leaks.
  • Heating and plumbing – trace pipe runs and narrow down leaks.

What matters when measuring

A thermal image only becomes meaningful through comparison: a terminal is not conspicuous because it is warm, but because it is warmer than the identical one next to it. Also make sure that the load situation is realistic – no fault shows up at no load – and pay attention to the emissivity of the surface, because bare metals reflect and quickly appear too cold.

Suitable instruments

TV 293 and TV 296 thermal imaging cameras

Compact and quickly ready for use

Handy infrared cameras for everyday troubleshooting on installations and buildings, with evaluation software for the PC.

to thermography

TV 280 endoscope camera

For hard-to-reach places

Two metres of flexible cable and a 4.3-inch monitor – for cavities, shafts and anywhere the eye cannot reach.

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