Rebreather World - View Single Post - From RG-UF/M....To RGU-2....And Beyond

DanDunfee · 10th September 2007, 15:25

Quote: (Originally Posted by Yankee Rebel)

i think your RG-UF/M reg is supposed to flow at .8-1.1Lpm. so just timing how long it takes to fill your CL shouldnt be hard.

flow rate is .8 lpm for ease of example.. it takes 5 minutes 45 seconds to fill the CL from dead empty to firm/full... .8X5.75=4.6.

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Nearly all RGUs I've handled, or heard of, seem to have a flow rate adjusted right at .9 l/m If you have a flowmeter, check this. Then use the method above. Assuming you have a DSV, then check it with DSV closed, and a charged scrubber in place. This will give you a total loop (excl man) free volume, a very useful number for several calculations.

Establishing such a method for 'time to fill the bag' also gives you a convenient quick-check method to verify correct mass flow pre-dive.

Dan

10th September 2007, 15:25	#19 (permalink)
DanDunfee Custom Title Allowed! Current Rebreather/s: Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Other SCR Home Build Join Date: Sep 2005 Location: Virginia, USA Posts: 204	Re: From RG-UF/M....To RGU-2....And Beyond Quote: (Originally Posted by Yankee Rebel) i think your RG-UF/M reg is supposed to flow at .8-1.1Lpm. so just timing how long it takes to fill your CL shouldnt be hard. flow rate is .8 lpm for ease of example.. it takes 5 minutes 45 seconds to fill the CL from dead empty to firm/full... .8X5.75=4.6. ================ Nearly all RGUs I've handled, or heard of, seem to have a flow rate adjusted right at .9 l/m If you have a flowmeter, check this. Then use the method above. Assuming you have a DSV, then check it with DSV closed, and a charged scrubber in place. This will give you a total loop (excl man) free volume, a very useful number for several calculations. Establishing such a method for 'time to fill the bag' also gives you a convenient quick-check method to verify correct mass flow pre-dive. Dan __________________ There are 'Bold' divers and old divers, but NO old, ' Bold ' divers Last edited by DanDunfee : 10th September 2007 at 15:47.
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