Seeing that we have got round to the subject of thermocouples, etc, I often
use a Solartron SI3535D datalogger with thermocouples for measuring
component temperatures, and find quite often that it does not give "correct"
readings when thermocouples are placed on transformers in switching
power supplies, high voltage transformers in monitors, etc. I can get a
"correct" reading by switching off the EUT momentarily, obviously
removing the source of the problem. Note that the problem can occur
even if the thermocouple is not making an electrical connection to the
component winding involved.
Any suggestions how to overcome this ? My previous antique datalogger
didn't have this problem, but it eventually had to be scrapped due to lack
of spare parts - and the expectation that a more modern unit would be
better !.
Regards,
John Crabb, Development Excellence (Product Safety) ,
NCR Financial Solutions Group Ltd., Kingsway West, Dundee, Scotland. DD2
3XX
E-Mail :[email protected]
Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. VoicePlus
6-341-2289.
