Thursday, 29 July 2010

Gas and CO Detectors.

Gas and CO Detectors.

Rosie is fitted with the usual home type of smoke detector fire alarm. As an additional precaution I am looking at installing a couple of the gas sensor type alarms aboard as well as a carbon monoxide detector. CO, carbon monoxide is an odourless, tasteless and silent killer. We have a gas central heating system (Aldi) on board as well as the wood burning stove highlighted in my previous post. So CO and well as gas leak detection are a must.

For CO or Carbon Monoxide I have chosen the following detector. The Zeta  ZD-CO-9X. This is a domestic Carbon Monoxide alarm. It comes with a six year "sealed for life" battery. Price: £29.32 from Discount Fire SuppliesPDF Data Sheet

Liquefied Petroleum Gas or LPG is potentially explosive but is heavier than air and smells strongly. Liquefied petroleum gas (also called autogas) is a flammable mixture of hydrocarbon gases used as a fuel in heating appliances. Varieties of LPG bought and sold include mixes that are primarily propane, mixes that are primarily butane, and - most common - mixes including both propane C3H8 and butane C4H10, depending on the season, in winter more propane, in summer more butane. A powerful odorant, ethanethiol, is added so that leaks can be detected easily. You should be able to detect any leaks by the strong acrid smell.

The pressure at which LPG becomes liquid, called its vapour pressure, varies depending on temperature. LPG is heavier than air, and thus will flow along floors and tend to settle in low spots, such as bilges on boats. This can cause an explosive ignition or suffocation hazard if not dealt with. If a container leaks, the LPG first spreads out as a super-cooled liquid. Then it boils into the atmosphere and become an oxygen-displacing gas, which asphyxiates anyone in the affected radius. This gas spreads out to cover several hundred times more area than the liquid from which it comes.

For The LPG gas detector I have chosen the Pilot Gas Mini (PLT1) 12v Marine LPG Alarm / Detector with remotely mounted detector head. Features a 95db Loud alarm & warning light, 3.5m of cable with sensor head, which can also be linked to a 12v Gas cut off switch. The alarm will continue to sound as long as the sensor detects a dangerous concentration of gas vapour.

Purchased from Caravaning online  Price £119 See here.


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