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  1. #1
    Join Date
    Jan 2010
    Location
    Portsmouth
    Posts
    474

    Default Recommend an LPG 12 Volt GasAlarm

    Please ...any suggestions?

  2. #2
    Join Date
    Jul 2002
    Location
    Home: Kent. Boat: Chichester
    Posts
    40,294

    Default Re: Recommend an LPG 12 Volt GasAlarm

    Quote Originally Posted by paella View Post
    Please ...any suggestions?
    Basic.. Nasa... http://www.nasamarine.com/product/gas-monitor/

    Well known...Pilot ... multiple sensor versions ... can also control other equipment eg gas shut off valve. https://www.envinsci.co.uk/envin-shop/

    Professional standard ...... Nereus ,,,,,,, sensors are water resistant http://www.nereusalarms.co.uk/

  3. #3
    Join Date
    Jan 2010
    Location
    Portsmouth
    Posts
    474

    Default Re: Recommend an LPG 12 Volt GasAlarm

    Quote Originally Posted by VicS View Post
    Basic.. Nasa... http://www.nasamarine.com/product/gas-monitor/

    Well known...Pilot ... multiple sensor versions ... can also control other equipment eg gas shut off valve. https://www.envinsci.co.uk/envin-shop/

    Professional standard ...... Nereus ,,,,,,, sensors are water resistant http://www.nereusalarms.co.uk/
    Thank you

  4. #4
    Join Date
    Dec 2012
    Location
    Med for the summer, Caribbean for the winter
    Posts
    51

    Default Re: Recommend an LPG 12 Volt GasAlarm

    Quote Originally Posted by paella View Post
    Please ...any suggestions?
    Not sure exactly how suitable this would be however it is cheap and may be worth a punt
    https://www.ebay.co.uk/itm/12V-Combu...8AAOSw-3FZIsF8

  5. #5
    Join Date
    Jan 2016
    Location
    Ipswich, Suffolk
    Posts
    330

    Default Re: Recommend an LPG 12 Volt GasAlarm

    I tend to fit the BEP models as standard. Either with or without solenoid control.
    Electrics & electronics in Suffolk and at Southwold Boatyard
    + Eberspacher & Webasto

  6. #6
    Join Date
    May 2016
    Location
    Suffolk
    Posts
    4,315

    Default Re: Recommend an LPG 12 Volt GasAlarm

    Quote Originally Posted by Besonders View Post
    Not sure exactly how suitable this would be however it is cheap and may be worth a punt
    https://www.ebay.co.uk/itm/12V-Combu...8AAOSw-3FZIsF8
    Sorry, but totally useless on a boat. LPG is heavier than air and will collect in the bilges, you therefore need a sensor with a remote probe.

  7. #7
    Join Date
    Dec 2012
    Location
    Med for the summer, Caribbean for the winter
    Posts
    51

    Default Re: Recommend an LPG 12 Volt GasAlarm

    Quote Originally Posted by PaulRainbow View Post
    Sorry, but totally useless on a boat. LPG is heavier than air and will collect in the bilges, you therefore need a sensor with a remote probe.
    Fair point, unless of course it is located within the bilge perhaps underneath the cooker

  8. #8
    Join Date
    Oct 2010
    Location
    Swing mooring Faro
    Posts
    5,184

    Default Re: Recommend an LPG 12 Volt GasAlarm

    How much confidence do people have with gas detectors? We have the Pilot one with the sensor just under the sole board by the galley and it tests OK on its self test but wonder how reliable this is. Do wonder some times whether to blow some butane at it (unlit blowlamp or lighter) as a double check. Any thoughts?

  9. #9
    Join Date
    Jan 2016
    Location
    Ipswich, Suffolk
    Posts
    330

    Default Re: Recommend an LPG 12 Volt GasAlarm

    That's basically the done thing in commercial testing along with smoke heads using canned smoke, heat sensors using a hot thing and float switches using a finger.

    When I fitted mine, just out of curiosity I did wave the sensor around the hob which was not lit and it did spark into life within 30 seconds or so.

    Obviously the skill here is determining which part of the boat will fill up with gas first. Manufacturers suggest in the bilge normally being the lowest point. I feared that for the time it would take for the gas to get from the closest gas union which is inside a kitchen cupboard, it was better to mount in the bottom of the kitchen cupboard with the only gas joint on the boat. There are no other joins from here until it gets to the gas locker in the lazarette. Theory is, the bottom of the cupboard would fill up before leaking into the bilge. However this is my decision to ignore the manufacturers instructions and I wouldn't recommend you did it.

    Quote Originally Posted by GrahamM376 View Post
    How much confidence do people have with gas detectors? We have the Pilot one with the sensor just under the sole board by the galley and it tests OK on its self test but wonder how reliable this is. Do wonder some times whether to blow some butane at it (unlit blowlamp or lighter) as a double check. Any thoughts?
    Electrics & electronics in Suffolk and at Southwold Boatyard
    + Eberspacher & Webasto

  10. #10
    Join Date
    Jan 2005
    Location
    Me Edinburgh, boat JWD
    Posts
    4,552

    Default Re: Recommend an LPG 12 Volt GasAlarm

    The sensors do not last forever, and a considerably shorter time if they get wet. NASA supply replacement sensors as a plug-in pcb at a reasonable price. Do check the availability of spares for your chosen model.

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