TC-08 giving + readings when they should be negative

[Thermalman]

HI, I have a laptop loaded with Windows 7 running PicoLog 6 and when i connect the Type T connectors to the inputs from a Cryostat (freezer basically) the Temperature Values that should be a minus value are showing as positive temperatures and also some of the values are outside of the range that i am expecting, i.e higher than the permitted values. I have checked the connectors on both the Cryostat and the cabling and i know these are wired correctly. The only way i can get the USB TC-08 to show me a negative value is to swap the polarity of the cabling in the Type T connectors - Positive cable wired to negative and Negative wire connected to positive. I was wondering if perhaps my datalogger is wired incorrectly inside? I tried the correctly wired cables in an Omega Temperature Meter and that reads minus temperatures when connected correctly? Is there a way of me checking if the issue is with the datalogger. I only found this out after sending the files to our support people and they could not understand how my reading were so wrong so any help would be greatly appreciated.

[Gerry]

Hi Thermalman,

It sounds as if there could indeed be a problem with the data logger.

Could you contact our Help Desk at support@picotech.com giving the same details (or referring to this post) so that we can help you further with this issue.

Regards,

Gerry