SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Smoke and CO2 detectors
 Not a Member? 


Thread: Smoke and CO2 detectors Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
08-31-2013 12:30 AM
hellosailor
Re: Smoke and CO2 detectors

It's a shame you guys don't have access to the Wikipedia, so I'll lend you my copy:

https://en.wikipedia.org/wiki/Carbon_monoxide_detector

"The gas sensors in CO alarms have a limited and indeterminable life span, typically two to five years. The test button on a CO alarm only tests the battery and circuitry, not the sensor. CO alarms should be tested with an external source of calibrated test gas, as recommended by the latest version of NFPA 720. Alarms over five years old should be replaced but they should be checked on installation and at least annually during the manufacturers warranty period."

The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. At lower concentrations (e.g. 100 parts per million) the detector will not sound an alarm for many tens of minutes. At 400 parts per million (PPM), the alarm will sound within a few minutes. This concentration-time function is intended to mimic the uptake of carbon monoxide in the body while also preventing false alarms due to relatively common sources of carbon monoxide such as cigarette smoke."

There are UL and other standards, perhaps there is a USCG or ABYC standard that makes "marine" detectors different in terms of what set points they'll use.

But just TRY to find a spray can of CO, or one of smoke, to test your detectors with. Won't be at the local bigbox store, for sure.
08-30-2013 11:04 PM
MarkSF
Re: Smoke and CO2 detectors

I know that the Fireboy Xintex I have is averaged... this one :

Carbon Monoxide Detectors from Fireboy-Xintex
08-30-2013 11:53 AM
PaulinVictoria
Re: Smoke and CO2 detectors

I seem to recall on my "home depot" CO alarm something about dosage over time triggering it rather than just a set level, but then it wasn't a cheap one. I'd have to go and dig out the instructions, but in any case, I think I'd be happier if it detected any CO as that almost always indicates a problem that has to be fixed.
08-30-2013 11:45 AM
DRFerron
Re: Smoke and CO2 detectors

Quote:
Originally Posted by MarkSF View Post
You definitely want a marine CO detector, not Home Depot, wired into 12V.

The domestic ones alarm when they reach a threshold, while the marine ones calculate an actual dose over time (time-weighted average). This means that a domestic one is constantly going off, when it gets a whiff of CO from your engine or someone else's. My marine one never triggers accidentally.
Is this the same for all or specific marine models?
08-30-2013 11:42 AM
MarkSF
Re: Smoke and CO2 detectors

You definitely want a marine CO detector, not Home Depot, wired into 12V.

The domestic ones alarm when they reach a threshold, while the marine ones calculate an actual dose over time (time-weighted average). This means that a domestic one is constantly going off, when it gets a whiff of CO from your engine or someone else's. My marine one never triggers accidentally.
08-29-2013 10:07 PM
hellosailor
Re: Smoke and CO2 detectors

Double-sided mounting tape, and a BIG patch of it, will work. Most "Velcro" adhesives will release on a hot summer day.

Also be aware the all of the inexpensive smoke detectors are "ionization" types that need to be thrown out, completely, in five years. They tend to die around the 5-7 year range as the ionization chamber gets covered in crud internally, and if you are in a salt air location, I'd expect it to fail even sooner. So look for a "dual" detector, because the photocell type are slower on some fires, faster on others, and the dual detector can sometimes give you a full 15 minutes of additional warning. Figure $30-50 for a dual detector, and keep the CO detector separate. Those also fail over time.
If you aren't really sure of the difference between CO and CO2...take a basic boating safety course with the US Power Squadrons (USPS) or similar. You'll appreciate some of the safety tips, and probably get an insurance discount when you renew.
08-29-2013 09:11 PM
PaulinVictoria
Re: Smoke and CO2 detectors

Double-sided sticky tape (or velcro, but I don't think you're going to take it down much, a battery one lasts for years) for mounting. Remember that smoke goes up high, CO, CO2 (and propane if applicable) go down low.
08-29-2013 07:10 PM
LinekinBayCD
Re: Smoke and CO2 detectors

Quote:
Originally Posted by dabnis View Post
"Sticky" sided Velcro?

Paul T
That is what I use. Mount them in the center of the main cabin.
08-29-2013 07:02 PM
tommays
Re: Smoke and CO2 detectors

They should really be on a 24 hour 12 volt circuit and they kind of fall under UL 2034


I fell it is a small investment and have a SAFE-T-ALERT unit

Marine Operating Specifications

UL Listed to UL 2034-2005 for Marine use, including March 8, 2007 revisions. Meets ABYC A-24 recommended standards.
Marine environment tested for salt water spray, cooking fumes, shock, humidity, temperature extremes, vibration and corrosion.
Power 12 vDC, operational range 8-16 volts.
Micro Current Technology: 60 milliamp (.06 amp.) current draw.
Widest Operational Temperature Range Available:-40°F to +158°F
(-40°C to +70°C).
Relative Humidity: 15% to 93%.
Confirmation Circuit: Yes - Circuit reconfirms CO levels before alarming.
Audible Alarm: Minimum 85dB @ 10 feet.
Case Dimensions:
Model 60-541 Surface Case - 5.5"W x 3"H x 1.3"D.
Model 60-542 Flush Case - 6.5"W x 3.5"H x 1.25"D.
Weight: 60-541 / 542 = 0.43 lb.
08-29-2013 06:57 PM
dabnis
Re: Smoke and CO2 detectors

Quote:
Originally Posted by Dave_E View Post
Hi All,

The Allmand 31 is mine! The insurance company gave me 45 days to comply with recommended repairs/upgrades from the survey, 2 of which were smike detector and CO2 detector. No big, I'm good with that. I've researched and found we don't have "marine industry standards" for these items and feel OK getting them from Home Depot, but where to install them... never thought about that before. Really can't see punching holes in the overhead so the smoke detector is on the ceiling like in the house. Any suggestions?

Dave
"Sticky" sided Velcro?

Paul T
This thread has more than 10 replies. Click here to review the whole thread.

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 10:16 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.