Bimetallic thermometers (Bimetals) are most often seen in people’s pockets, clipped there with the dial indicator facing upwards. They have a sensing shaft about 3 or 4 mm in diameter made of stainless steel.
They are great for quick checks of temperature of a product or process, easy to clean and require no batteries.
But there are many other bimetals used in processes throughout the world usually unseen because they are inside another piece of equipment.
They are mostly found in thermostats, for example, in home and commercial heating/cooling systems. They are used as over temperature protection devices for most electrical equipment ranging from motors to transformers to small electrical appliances found in the home.
Think of it! They require no power, last almost forever, are very simple and cost little.
What more could you want?
Many companies make them and many more sell them to the public and industry. A few of these organizations have their web sites listed below.
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