Unknown Tourist dead, Dive Master ill - Ambergris Caye, Belize

[LFMarm]

Okay, a 5ppm cutoff is more reasonable than zero. The +2ppm sensor variance makes zero an unreasonable goat. Of course, the unit might read 10ppm for 12ppm, so one wouldn't want to be too liberal. I rejected a tank a couple of years ago for 10 and they had to send another tank out from town, but I should have tested twice as I might have allowed some motor fumes in the bag. Skill counts.

We certainly don't want to be diving any 200ppm tanks, and those do happen. They just don't get caught often.

When using a tank flow rate limiter and a connecting hose there is very little room for operator error. As long as your sensor is calibrated and has sufficient resolution, you will get a good reading from the tank with no ambient contamination.

 

[LFMarm]

Given, I received some DMs on this, I will share with everyone. While I love the Divesoft professional flow limiter (165 USD, Divesoft Professional Flow Limiter MK2 DIN G/58) because it screws into the DIN valve and allows to adjust the flow, there are other cheap options that work very well such as this one Divesoft Simple Flow Limiter for SOLO (9 USD) and this one Divesoft - Simple Flow Limiter For Solo (10 USD).

 

[inquis]

The advantage of the Divesoft Pro Flow Limiter is it has a very low flow (~1/10th that of other limiters). I don't feel like I "waste" any gas doing analysis. That said, their analyzer expects that. I don't know if other analyzers (CO or otherwise) can be accurate with such low flow.

 

[ChrisMBC]

I can also recommend the Divesoft flow limiter that goes into an LP port, which gives me identical results to the Professional flow limiter, while being much cheaper. I tried it with the Forensics Detector CO monitor linked further up the thread earlier today, and it seems to work well (although I don’t have a scuba tank with contaminated gas to really try it with…)

 

[John Bantin]

Belize Diving Death; Always Test Your Air: Undercurrent 07/2024

 

[DaveWKC]

Belize Diving Death; Always Test Your Air: Undercurrent 07/2024

Since I am relatively new to this board - is it common for members to promote their own content, on a site that requires a paid subscription to view?

 

[OMyMyOHellYes]

Since I am relatively new to this board - is it common for members to promote their own content, on a site that requires a paid subscription to view?

Paid subscription? What paid subscription?

 

[Steelyeyes]

Paid subscription? What paid subscription?

The one to read the rest of the link to Undercurrent.

 

[DandyDon]

Since I am relatively new to this board - is it common for members to promote their own content, on a site that requires a paid subscription to view?

No it's not. I don't know if John Bantin is associated with Undercurrent, but it is a respected source of information. Some here subscribe to it. I tried using 12 ft ladder to read beyond the paywall but could not.

 

[scubadada]

@John Bantin is the senior editor of Undercurrent and an established member of ScubaBoard.

I have been a subscriber to Undercurrent for more than the twenty years that I have been a member of ScubaBoard. I have contributed 52 trip reports to Undercurrent.