Profiling Vapour Phase System

I am in the process of characterising a new vapour phase reflow system and am interested to learn if anyone out there has ever come across time/temperature datalogging equipment capable of being run through the entire process (including vacuum) along with the assembly being profiled. The equipment would have to be capable of withstanding a process vapour temp. of 240 deg. C for approx 90 seconds.

We use various manufacturer's equipment for convection reflow equipment to good effect, but as these are not fully sealed (even when in their thermal jackets) therefore they are unsuitable as the condensing vapour could enter, potentially damaging the electronics by overheating etc..

Currently I am trying to make do with trailing thermocouples attached to reference assemblies but this is impractical in the longer term as there are various shutter mechanisms etc. within the process that make entrapment of these trailing wires a distinct possibility.

Here's hoping someone else has come across this application and can help.

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