Hello GuysHey @bigcol I was wondering this before, so a combined Co2 and lpg detector may not be the best idea? Presuming if any Co2 is present it will rise?
I am very sorry to hear about the accident and glad everyone is OK. However, we need to be a bit careful about terminology.
We all should have a smoke detector, gas detector and a Carbon Monoxide (CO) detector in our caravans. CO is a real danger in a confined space and recently killed two people in NSW. In high concentrations it kills and in very low concentrations it can increase the risk of heart failure. Carbon monoxide binds to the haemoglobin in the blood and kills usually by putting the person asleep then dead. This is why outdoor gas heaters can kill in a caravan.
Carbon Dioxide (C02) is what we breath out and is always present in the atmosphere, while in high concentrations it can be lethal it is no where near the hazard that Carbon Monoxide (CO) is even in low concentrations. CO detectors are a really good idea and are cheap, Aldi recently had some on sale for $20.
CO2 detectors are made by people like Drager and are very expensive and are used in confined spaces (sewers, caves, tunnels, etc.), but not necessary for caravans. CO2 will kill you in an airtight container, because as we breath the Oxygen in the air we convert it to CO2 and eventually have not enough Oxygen and die. Also in high concentrations CO2 is heavier than air will cause headaches and disorientation but usually not lethal unless you descend into a hole which has high concentrations, hence the need for expensive CO2 detectors.
There are avaialbe combined gas detectors and CO detectors.
So in summary we all should have a Carbon Monoxide (CO) detector in our caravans which are cheap. A gas detector is a good idea and is also cheap and smoke detectors are already required by law and we should check the batteries at least twice a year.
Sorry to be a bit technical, but I think there is a lot of confusion about the different kinds of detectors we need.
Regards
Terry