How are VR3's calibrated?

Mdemon · 9th April 2007, 21:36

I want to open it up as it seems to be developing a tiny leak (tiny smear of liquid on part of the screen). Is the VR3 "calibrated" in some way - and will this be affected by opening it up?

***jradomski*** · 10th April 2007, 03:10

Quote: (Originally Posted by Mdemon)

I want to open it up as it seems to be developing a tiny leak (tiny smear of liquid on part of the screen). Is the VR3 "calibrated" in some way - and will this be affected by opening it up?

if you are talking about the depth.. no..
its a factory (from intersema) calibrated sensor that Delta-p Purchases.. All the calibration data is stored within the sensor.

If you remove the sensor (its held in place by 2 screws) you just have to make sure the pressure is about equal on both sides.. When its uneven the pressure may be reported above normal.. all you need to check is the the surface pressure is about what is expected..

Mdemon · 10th April 2007, 09:11

Many thanks Joe - I thought you'd know!

All cleaned, greased and good to go. The ambient pressure reads about 10mB less than it did yesterday but then maybe that's just the weather. Will test it properly on the next dive.

***jradomski*** · 10th April 2007, 09:48

Quote: (Originally Posted by Mdemon)

Many thanks Joe - I thought you'd know!

All cleaned, greased and good to go. The ambient pressure reads about 10mB less than it did yesterday but then maybe that's just the weather. Will test it properly on the next dive.

the normal accuracy of the sensor (0-40c) is +/- 20mbar

Mdemon · 10th April 2007, 22:29

Inside a VR£...

9th April 2007, 21:36	#1 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,946	How are VR3's calibrated? I want to open it up as it seems to be developing a tiny leak (tiny smear of liquid on part of the screen). Is the VR3 "calibrated" in some way - and will this be affected by opening it up? Last edited by Mdemon : 9th April 2007 at 22:05.
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10th April 2007, 03:10	#2 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,113	Re: How are VR3's calibrated? Quote: (Originally Posted by Mdemon) I want to open it up as it seems to be developing a tiny leak (tiny smear of liquid on part of the screen). Is the VR3 "calibrated" in some way - and will this be affected by opening it up? if you are talking about the depth.. no.. its a factory (from intersema) calibrated sensor that Delta-p Purchases.. All the calibration data is stored within the sensor. If you remove the sensor (its held in place by 2 screws) you just have to make sure the pressure is about equal on both sides.. When its uneven the pressure may be reported above normal.. all you need to check is the the surface pressure is about what is expected.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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10th April 2007, 09:11	#3 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,946	Re: How are VR3's calibrated? Many thanks Joe - I thought you'd know! All cleaned, greased and good to go. The ambient pressure reads about 10mB less than it did yesterday but then maybe that's just the weather. Will test it properly on the next dive.
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10th April 2007, 09:48	#4 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,113	Re: How are VR3's calibrated? Quote: (Originally Posted by Mdemon) Many thanks Joe - I thought you'd know! All cleaned, greased and good to go. The ambient pressure reads about 10mB less than it did yesterday but then maybe that's just the weather. Will test it properly on the next dive. the normal accuracy of the sensor (0-40c) is +/- 20mbar __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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10th April 2007, 22:29	#5 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,946	Re: How are VR3's calibrated? Inside a VR£...
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