I believe there have been a large number of typographical issues regarding the temperature values as presented in this article.

For example the K type thermocouple is described as having a range of 200-23000F or 96-12600C, where this should actually read 200-1300F or 96 – 1260C, the 'degree' symbols have been somehow become transcribed as an additional 0 throughout much of the article.

There is also an inconsistency with reporting the numbers, sometimes 400C and sometimes with a gap between the number and the C, such as 400 C, again adding to the confusion regarding the actual temperature being discussed, which in reality was only 40C.

I also appreciate that such items are not easy to pick up on any proof reading, as these are all still valid temperature values, however, in a technical article such as this one where most of the article is about precise temperature control, the values as shown are wildly misleading .

Unfortunately, I am not even sure that the thermocouple values are correct, as on reading the manual for the JLD612, it shows a K type thermocouple as -328 to 2372F or -200 to 1300C, so it looks like the preceding '-' sign has been dropped from the lower values shown for the thermocouples as well as the F and C values being transposed.

Thanks Neil,

I have only just read the article, and did look to see if there was a previous posting regarding this issue, but did not see one – maybe I should have looked harder.

As I mentioned above, even if it had been proof read, the issues may not have been picked up as they were still valid temperatures, if a little high.