Why aren immersion heaters guaranteed against corrosion?
That’s because those of us who provide immersion heaters have no way of knowing what liquid the immersion heater is really going to be used in. For instance, various proprietary solutions—for example, solutions for pickling metals—may have as their primary constituent a chemical for which we know the appropriate sheath material. But, there may be other chemicals present in those solutions that would indicate use of a different sheath material, and we (or you) have no way of finding out what those other chemicals are. Another example is when customers tell us they are buying an immersion heater for use in ‘plain water’—where we would recommend a regular Incoloy sheath—but tell us later, after the first heater has failed that their ‘plain water’ is really de-ionized water—where we recommend the use of passivated Incoloy (Best), passivated Inconel (Better), or passivated 316 Stainless Steel (Good). Power Density a.k.a. Watt Density There are really two reasons you need to specify the corr
