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Complete Specs We all get fooled occasionally, and when we do, it brings home the importance of asking the right questions and making sure the specification for a heater is correct. There are some things about a heater that we cannot see and cannot detect with a simple resistance check. Distributed wattage and special cold sections are typical examples. Often, cold sections in a heater are a function of the design and manufacturing limitations of the supplier. But sometimes we get fooled. Once we had a heater supplied as a sample from which to design. Using an x-ray, we pointed out the long cold tip end as if it were a limitation of the heater, only to have the user come back (after they had supplied the whole spec to us) and say, "Oh, yes, we need that extra cold section at the end of the heater for our machine design."
The above picture shows a heater that was designed to have a specific area heated. If we followed the initial specification, we would have had heated section where no heat sink existed. If you have any question about the heater after inquiring about any special heat profiling, send us the heater and we will perform a thermal study or x-ray to ensure that you optimize your sales opportunity.
Friday FunniesFor all you metrologists (one who specializes in measurements):
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