1586A Notification (258.42 KB)

It was recently discovered that the 1586A when used with a PRT that was characterized using either sub-range 6 (0.01°C to 962°C) or 7 (0.01°C to 660°C) the 1586A was not factoring in the C & D coefficients and counting them as Zeroes. This will cause errors in the calculations at temperatures above 419°C. Temperatures below 419°C are not affected. If you are using any of the other ITS-90 subranges this error will not affect your readings. We have resolved the issue and have a firmware fix.

This notification affects all units with firmware version 1.03 or lower.

Please review the document above for issue remediation.