Rebreather World - View Single Post - Azimuth CMF Dosage unit adapted for a Dolphin?

Underwaterbear · 19th December 2005, 23:21

The Azi switch/dose block can* be used as a starting point for converting the unit to CCR ....

But you need to check the seat of the needle valve carefully by monitoring flow at a range of IPs for a reasonable time period. The capacity of the standard Azi dose unit to deliver very low flows (eg 1 lpm) is variable and dependent on the seat material. I have a suspicion that units built in different years used different materials and tolerances.

My old unit (now MHDs CCR Azi) was able to deliver 0 lpm but it was rather unstable at around 1 lpm.

Speaking generally I would say that the Azi dose unit adjustment is just too coarse for use as a CMF CCR dose unit.

19th December 2005, 23:21	#5 (permalink)
Underwaterbear A Prismer in Megland Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: May 2005 Location: Seattle, WA Posts: 184	Re: Azimuth CMF Dosage unit adapted for a Dolphin? The Azi switch/dose block can* be used as a starting point for converting the unit to CCR .... But you need to check the seat of the needle valve carefully by monitoring flow at a range of IPs for a reasonable time period. The capacity of the standard Azi dose unit to deliver very low flows (eg 1 lpm) is variable and dependent on the seat material. I have a suspicion that units built in different years used different materials and tolerances. My old unit (now MHDs CCR Azi) was able to deliver 0 lpm but it was rather unstable at around 1 lpm. Speaking generally I would say that the Azi dose unit adjustment is just too coarse for use as a CMF CCR dose unit.
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