A heat-treatment line that replaced its protection tubes every six weeks did not have a thermocouple problem. It had a ceramic problem. The elements came out of service clean and unbroken, yet the tubes had cracked, spalled or bowed, and the drift that followed belonged to the t...
The first sign that something is wrong with a thin film RTD is rarely a dramatic failure. It is a slow disagreement with a neighbouring sensor, a reading that creeps during a heat-up cycle, or a batch trend that no longer matches the recipe. In one case, a food processor replace...
A dairy processor in eastern China spent three weeks chasing a pasteurizer fault that turned out to be one crossed thermocouple extension wire inside a junction box. The recorder kept writing believable numbers the whole time, which is precisely why the investigation took so lon...
A heat-treat line running at 900 degrees Celsius will usually consume a Type K thermocouple in eight to fourteen months. The same probe sitting in a clean water loop at 90 degrees Celsius often survives eight years or more. Nothing about the two probes looks different on a datas...
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