Hello,
I purchased a new CooTwo a couple of months ago (April), and I have yet to be able to get a reliable CO reading from it.
It seems the CO reading varies greatly based on ambient temperature.
I have already sent it back to DveNav at my expense, and they sent it back saying they calibrated it and it was good to go.
But, when I tried to use it for the first time(about a week ago) after receiving it back, as soon as I turned it on, the CO was reading very high and flashing.
I did an experiment to try illustrate the issue.
1- I placed the CooTwo in a ziplock bag, along with a thermometer, and simply turned it on when indoors at A/C room temperature and took a pic of the reading.
Photo showing 75.2F temp and 0.3 CO
2- Then I placed it outside and let it acclimate to outside temperature, turned it on, and took another picture.
All of this without opening the zip lock bag.
Photo showing 102.0F temp and 8.9 CO
3- And lastly, I brought it back inside, let it acclimate to indoor A/C room temperature, and turned it on.
Photo showing 75.7F temp and 3.1 CO
It seems to me that the CO reading is not reliable for any sort of testing if it will vary so much with the ambient temperature.
I would like to think this is not by design, and indeed it is a fault with this unit.
I have gone back and forth via email (starting on May 23rd), but it is painfully slow to get a reply from DiveNav.
Ex: I emailed last Friday (July 8th), and re-sent that same email yesterday (July 12), but have yet to receive a reply.
I posted here asking for a phone number to discuss, and they suggested email and their support forum.
I went to their forum, but I don't see a place to register, so I cannot post.
I registered on the main site, and can login there, but that login doesn't work on the forum.
Ideally I would like to get a replacement, unless this is normal in all units, in which case I would like to return it for a refund.
I'm going on a 2 week trip on the 21st, and I'd like to be able to use it then.
Thank you.
I purchased a new CooTwo a couple of months ago (April), and I have yet to be able to get a reliable CO reading from it.
It seems the CO reading varies greatly based on ambient temperature.
I have already sent it back to DveNav at my expense, and they sent it back saying they calibrated it and it was good to go.
But, when I tried to use it for the first time(about a week ago) after receiving it back, as soon as I turned it on, the CO was reading very high and flashing.
I did an experiment to try illustrate the issue.
1- I placed the CooTwo in a ziplock bag, along with a thermometer, and simply turned it on when indoors at A/C room temperature and took a pic of the reading.
Photo showing 75.2F temp and 0.3 CO
2- Then I placed it outside and let it acclimate to outside temperature, turned it on, and took another picture.
All of this without opening the zip lock bag.
Photo showing 102.0F temp and 8.9 CO
3- And lastly, I brought it back inside, let it acclimate to indoor A/C room temperature, and turned it on.
Photo showing 75.7F temp and 3.1 CO
It seems to me that the CO reading is not reliable for any sort of testing if it will vary so much with the ambient temperature.
I would like to think this is not by design, and indeed it is a fault with this unit.
I have gone back and forth via email (starting on May 23rd), but it is painfully slow to get a reply from DiveNav.
Ex: I emailed last Friday (July 8th), and re-sent that same email yesterday (July 12), but have yet to receive a reply.
I posted here asking for a phone number to discuss, and they suggested email and their support forum.
I went to their forum, but I don't see a place to register, so I cannot post.
I registered on the main site, and can login there, but that login doesn't work on the forum.
Ideally I would like to get a replacement, unless this is normal in all units, in which case I would like to return it for a refund.
I'm going on a 2 week trip on the 21st, and I'd like to be able to use it then.
Thank you.
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