[log in to unmask]" type="cite">Hi All,
Thank you for all your comments.Just for ISOGEOCHEM record, I wanted to update the SOLUTION to the situation with our MAT253, which had an issue with ISODAT randomly turning on the heaters (not necessarily initially) and venting.
Upon pumping down at one point, I made sure the computer was OFF, and the system was stable for couple days.Then I decided to turn computer ON, and start ISODAT. At that point the computer had a fault, basically according to computers error codes, it was the memory module/sockets. Tried to remedy by switching out other RAM memories to no avail. (Motherboard fried?)
Therefore, I setup the ISODAT and associated cards in another similar vintage computer (XP), and got the system working fine. So it doesn't randomly turn things on now.However, now the sensitivity of the IRMS is 2/3 of before this issue. That's workable for now. I did try to retune a bunch of times with little change. Any ideas? I loath to open source.
Anyway, the deal probably was that the motherboard was acting up, causing ISODAT to work funny.
On Thu, Jan 21, 2016 at 6:13 AM, Dijk, A.E. van (Arnold) <[log in to unmask]> wrote:
I had something similar a year or two ago. Burnt my elbow on the analyser. Now I have the switches on the plugs in off position until I want to roast and not ISODAT.
Around the same time I had a problem pumping the system. That was due to the detector housing vacuum. When you start to pump with the detector vacuum in FV position push the pan hard so there is contact with the O-ring.
Just recently our 253 has vented on its own a couple times in the last couple days. Apart from doing a bunch of pump maintenance etc, we noticed that upon rebooting and opening Isodat 3.0, it now automatically turns on the heaters. After a few hours it presumably vents because pumps are too hot. Anyone else experience this?
Dr. Herbert TobiasSr. Research AssociateDivision of Nutritional Sciences244 Garden AveCornell UniversityIthaca NY 148531-607-255-9009