it seems there are still a few to be had until stock runs out.
Analox EII CO Carbon Monoxide Analyser
Interesting that they still list it as available. I think I might want to call them for comformation.
Just remember any CO monitor requires calibration every 6 months so you'll require access to a tank of calibration gas and regulator.
That's what I loved about the Analox unit as you could calibrate it with the wheel. My sensor was recently replaced and is still good.
A cheaper unit that may not give accurate results but will keep you safe enough is the
Portable Carbon Monoxide Detector Meter (CO Inspector). Some rig up tubing from their reg to the unit, but I suspect that the flow pressure may give false readings. I use a gallon ziplock bag, turn the unit on, insert it into the bag, fill, seal, and wait a minute or two. You may suck in some ambient air which could give false readings from the boat engines in the marina, so try to avoid that. They claim that their software automatically adjusts for sensor drift, which may or may not be true. The last time mine came up for two year servicing including replacement of battery and sensor, I bought a new one instead on sale, but the old unit is now over three years since updating, laying on my desk, and still seems to work. Two warnings...
- Take a new gallon ziplock every day as they develop leaks. Use the freezer quality.
- Crack the valve first, then stick the bag over it. I put the bag on first once and sent the bag flying when I cracked the sticky valve.
Leave it on 24/7, take it to your room at night to protect you there, and you can even carry it around to protect yourself from your car, restaurants, etc.
Oh, you can bump test any unit by blowing into it as your body actually creates some CO. Get a higher reading by getting a smoker to breathe into it.
