Crompack GC

[chemengineer]

Dear Friends,
First I would like to say hello to all. I am a chemical engineer and I am going to work with GC (Chrompack CP9001), I faced with a problem today, when I was starting to work with the instrument, it shows me "Check LN2" and the signal for B was going up and up !
Would you please help me to know what is LN2 ? I have checked its catalog and haven't found it.
Hope to hear from you.
Thank you,
Semiramis

[mahs]

hi

If you are using nitrogen is carrier gas, if so check the flow of carrier gas.

[jwmol]

LN2 stands for Liquid Nitrogen. On the 9001 this may be used for oven cooling. You may have the CRYO MODE selected on page 7 (options page) in combination with an oven temperature setpoint that is below ambient.

JW