“…Failures most frequently occur in instruments that operate under conditions of elevated temperatures, vibrations, etc., for example, in instruments for controlling leaks from gas and oil pipelines using opticalelectronic systems (OESs) [1], gauges for monitoring the thickness of produced rolled sheets [2], etc. Some developers are inclined to consider that frequent failures occur due to severe thermal and vibration conditions that are caused by various factors, including internal thermal and vibration operating condi tions of instruments [2,3].…”