Carbon Monoxide Alarm Went Off!!!!

[Donna@Rockin' Beads]

I'm on my second session with a new 18kg Propane tank and my carbon nmonoxide alarm just went off. I've had this set up for well over a year and that's the first time it's sounded. I've left it for the moment but would really appreciate some pointers on what might have caused it and where I should check.

Thanks guys...

[Kaz]

Have you checked it's not just the battery alert?
Kazx

[Donna@Rockin' Beads]

I don't think it was that. The instructions say a beep a minute for a low battery and this was constant.
I'm back in now and it didn't go off again, even after I wafted it about the studio to see if it would pick up any nasty fumes 
I'd originally placed it behind my speakers and I wonder if there was simply a build up of carbon monoxide in that small space. 

[Amber]

As it's a new tank, have you checked for leaks? 

[Donna@Rockin' Beads]

As it's a new tank, have you checked for leaks? 

I'm not quite sure how.  Other than wafting the CM detector around everything...

[Dragonfire Glass]

the detector won't detect unbunt propane 

[Shirley]

Isn't the CO2 what you get as the torch burns? So it will be a ventilation issue rather than a leak?

[Amber]

the detector won't detect unbunt propane 

Durrrr...call that a blonde moment! 

[Dragonfire Glass]

yes, CO is a by product of burning propane inefficiently, usually you get CO2 & water
the CO is formed by insufficient oxygen
could be you need to turn your oxygen up a bit

[Donna@Rockin' Beads]

Aha!!!! I've been playing with my Oxycon levels and may well have turned it down too low.
Thanks guys.
I'll keep an eye (ear) on it. I'm sure Sally mentioned a gas detector in another thread so I'll go and have a hunt for that too.