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- Posts: 9
- Joined: Mon Jun 09, 2008 7:51 pm
Hi .. i have a very peculiar problem and my work seems to have been stopped due to this.
I use a Varian 3600 GC, my project is mainly for testing hydrogen produced from partial oxidation of propane. But i am a new student and i am just trying to run some basic samples like air to observe the plot.
We have observed that the TCD was faulty and got a new one. But varian doesnt manufacture any more TCD detectors for 3600 and so we bought a valco instruments micro volume TCD.
Now the old detector had a connection to TCD board (there are many other boards too eg. one for FID, one for temperature control etc) and all boards are connected to a motherboard.
This new detector has an externally controlled controller and has no connections with the TCD board now.
We had all the connections but it is showing lot faults mainly that it is assuming it to be an open circuit and assuming an infinite temperature and hence has turned the switch off on temperature board. So even though my TCD doesnt interact with the GC for oven and detector temp controls , it is assuming it to be an open loop and so i am not able to raise the temperature of any of the unit.
I tried removing the TCD board too but it still shows an error that "main power connector" is open .
I will be really glad if somebody helps me out
Thank you
Mayuri
I use a Varian 3600 GC, my project is mainly for testing hydrogen produced from partial oxidation of propane. But i am a new student and i am just trying to run some basic samples like air to observe the plot.
We have observed that the TCD was faulty and got a new one. But varian doesnt manufacture any more TCD detectors for 3600 and so we bought a valco instruments micro volume TCD.
Now the old detector had a connection to TCD board (there are many other boards too eg. one for FID, one for temperature control etc) and all boards are connected to a motherboard.
This new detector has an externally controlled controller and has no connections with the TCD board now.
We had all the connections but it is showing lot faults mainly that it is assuming it to be an open circuit and assuming an infinite temperature and hence has turned the switch off on temperature board. So even though my TCD doesnt interact with the GC for oven and detector temp controls , it is assuming it to be an open loop and so i am not able to raise the temperature of any of the unit.
I tried removing the TCD board too but it still shows an error that "main power connector" is open .
I will be really glad if somebody helps me out
Thank you
Mayuri
