I have a CR1000 with 8 thermocouples TypeT. Thermocouples are homemade twisted and then isolated thermocouple cable. The cables hang down from a buoy and are used to measure watertemperature down to 8m depth. This has been working pretty good for 5 years now.
But from time to time individual thermocouple-channels show weird data. For example jumping randomly betweehttp://www.eng-tips.com/postedit.cfm?id=8190795&am... the actual value that is for example 6 degC and much higher vales e.g. 40 deg C.
Sometimes I replaced the particular thermocouple with a new one to solve the problem but I recognized several times that values got back to normal without any action been taken.
I am wondering if that can be a weakness in the wiring panel. I always checked that the screws at the wiring panel are tightened firmly.
I have been checking Aussie sites Pyrosales & temperature controls for information.