Dear friends:

I have a Criticare POET II (602-1) CO2 monitor that does not recognice the sample line wen I attach it.
I must block the line for one or two second an then the equipment recognice it and begin to work

does any one have experience with this kind of problem

any information will be grateful

feel free to answer direct to my e-mail

<a href="mailto:dgonzalezb@yahoo.com" target="_blank">dgonzalezb@yahoo.com</a>
Thanks in advance.

P.S. sorry my English is not so good.