Michael Askin wrote: > On 9/29/06, Ron Jones <[EMAIL PROTECTED]> wrote: >> William Thomas wrote: >>>> Niall wrote: >>> approximately five years old (second set) and are 4x125 amps >>> capacity and the alternator is 55 amp output. The mastervolt >>> battery regulator dial is showing all the normal readings and >>> everything worked OK last weekend when away from mooring and we >>> were down about 75 amps when we started back on Sunday. >>> Thanks Niall and Ron for your comments. >>> However I am still puzzled by all this. Do these alarms go faulty. >>> Could it be detecting something else although I do not know what it >>> could be as we have not lit the stove in months. >> >> All depends on the sensor construction. Who knows what each maker >> might use. It might just be a simple flammable gas sensor, >> calibrated for a certain CO level. Like at work, I look after a >> portable flammable gas sensor for when we need to do "hot work" in a >> potential flammable atmosphere. It's calibrated with a pentane-air >> mixture, but responds with a loud warning to any flammable gas! > > I had a desiel leak into the marrass of oil under the engine (so it > was hard to spot). When it got hot in the engine room it's vapers went > into the boat. It used to set off the CO alarm, even though there was > no combustion. >
CO detectors.... They work by having a small amount of electricity running through a special sensor wire. The presence of combustible fumes increases the wire's resistance and sets off an alarm. So any combustible vapour can trigger the CO detector. They are *not* discriminating. Ron Jones Process Safety & Development Specialist Don't repeat history, unreported chemical lab/plant near missesa at http://www.crhf.org.uk Only two things are certain: The universe and human stupidity; and I'm not certain about the universe. ~ Albert Einstein Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/canals-list/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/canals-list/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
