Teledyne R22 and Meg problem

JonnyB · 22nd June 2006, 07:06

Hi, i changed my number 3 sensor a few weeks back on the Meg,
and now i have been noticing for the last 10 some dives on it that
after about 30-40 minutes or so into the dive that it gets voted out.
I thought that was very strange. So i looked at the sensors after each dive and as allways there is moisture in the loop, but the S3 did not look to have any more that other cells. Then i think i saw something on the face of the membrane, it looks like a piece of dust, its a bit brown in the center of membrane. So i dont know if that is the root of the problem or in fact there is a general problem with S3 on the Meg.
In case the problem is that thing on the censor face, do i try to take it of, or do i need to replace the senosor?

/Jonny

Skipbreather · 23rd June 2006, 00:29

Hi Jonny-

My #3 sensor had to be changed just 2 weeks ago. It was barely 10 months old, but had been a bit flaky since day one. It would often get voted out- low- towards the end of a dive, even when new. Post dive it has never been any more or less damp than the others. Last straw was when it started out a bit lower than the others (cal was a week earlier & dive blew out), gradually came up to their values during the dive, then got voted out high towards the end of dive.

I finally said to hell with it and put in my last spare. Has been rock solid for several dives since.

Ken

**UWSojourner** · 23rd June 2006, 00:54

It sounds like the sensor to me, but if you want to test it swap sensors 1 & 3. If it produces the same result in the sensor 1 position its definately the sensor.

ScubaG · 23rd June 2006, 04:36

I have had atleast 2 sensors that didn't work correctly ,fresh out of the package.
Another thing to remember also, when the sensor is in the package it basically absorb all the O2 and then go to sleep. When you open it up , it can take sometimes a day to fully (whake up). O2 normally gives it a jump start.

The scary thing is what if you calibrate and the sensor is not delivering the max mV and half way in your dive whake up from the O2 and then deliver move mV. Luckely the voting will kick it out.

Anybody experianced this before ?

LukeN · 23rd June 2006, 13:23

I have to open the can of worms. Is this a r22 problem or the r22 and the Meg? Do the inspo's and the optima have this as well?

AD_ward9 · 23rd June 2006, 14:25

Quote: (Originally Posted by LukeN)

I have to open the can of worms. Is this a r22 problem or the r22 and the Meg? Do the inspo's and the optima have this as well?

There are too many threads covering this topic. See the two existing R22?? threads.

We report on those threads design and quality problems with the R22, and suggest solutions.

We have followed up with AI on the PSD-11-39 connectivity also, and expect a reply shortly.

Cheers,
Alex

JonnyB · 23rd June 2006, 14:25

Quote: (Originally Posted by LukeN)

I have to open the can of worms. Is this a r22 problem or the r22 and the Meg? Do the inspo's and the optima have this as well?

Well, this is what i am trying to find out, i would like to know from other users if they have noticed that the S3 get voted out more often than S1 & S2, i would also like to know how sensitiv the membrane on the sensor is, should i attempt to clean the surface of it and see if i can get rid of that decolorization...

One thing i have noticed latelly is that teledyne have some problem with their sensors, i have changed 4 sensors in the past 4 months and the mV just dropped very fast and i have not done anything to shorten them...

/Jonny

JonnyB · 23rd June 2006, 14:27

Quote: (Originally Posted by AD_ward9)

There are too many threads covering this topic. See the two existing R22?? threads.

We report on those threads design and quality problems with the R22, and suggest solutions.

We have followed up with AI on the PSD-11-39 connectivity also, and expect a reply shortly.

Cheers,
Alex

Hi Alex, the reason i did not post in those treads is that i want to find out something different,
1. Do people notice problem on S3 on the Meg
2. Can i clean the surface of the sensor.

/Jonny

stoneytony · 23rd June 2006, 17:05

Hi,

Use the R22D BUD cells from APD, they are tested for correct output and linearity before despatch & all details are logged by APD. The bud cells are the pick of the bunch so as to speak. They are EXACTLY the same cell as the R22D. The R22D's you buy are probably the rejects!

Tony

AD_ward9 · 23rd June 2006, 17:12

Quote: (Originally Posted by stoneytony)

Hi,

Use the R22D BUD cells from APD, they are tested for correct output and linearity before despatch & all details are logged by APD. The bud cells are the pick of the bunch so as to speak. They are EXACTLY the same cell as the R22D. The R22D's you buy are probably the rejects!
Tony

This is simply not true.

The R22-D is a different product. It has a different thermistor arrangement and some differences in test. APD certainly does not send non-linear sensors back to Teledyne to sell as R22-Ds.

As for correct output, Teledyne test them, ship them to APD and they remaining in their sealed package when APD send them to you.

Cheers

Alex

22nd June 2006, 07:06	#1 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 991	Teledyne R22 and Meg problem Hi, i changed my number 3 sensor a few weeks back on the Meg, and now i have been noticing for the last 10 some dives on it that after about 30-40 minutes or so into the dive that it gets voted out. I thought that was very strange. So i looked at the sensors after each dive and as allways there is moisture in the loop, but the S3 did not look to have any more that other cells. Then i think i saw something on the face of the membrane, it looks like a piece of dust, its a bit brown in the center of membrane. So i dont know if that is the root of the problem or in fact there is a general problem with S3 on the Meg. In case the problem is that thing on the censor face, do i try to take it of, or do i need to replace the senosor? /Jonny __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
(Offline)

23rd June 2006, 00:29	#2 (permalink)
Skipbreather Reads the fine print Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet MK 15.X Home Build Join Date: Mar 2005 Location: Chicago, Illinois, USA Posts: 584	Re: Teledyne R22 and Meg problem Hi Jonny- My #3 sensor had to be changed just 2 weeks ago. It was barely 10 months old, but had been a bit flaky since day one. It would often get voted out- low- towards the end of a dive, even when new. Post dive it has never been any more or less damp than the others. Last straw was when it started out a bit lower than the others (cal was a week earlier & dive blew out), gradually came up to their values during the dive, then got voted out high towards the end of dive. I finally said to hell with it and put in my last spare. Has been rock solid for several dives since. Ken
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23rd June 2006, 00:54	#3 (permalink)
UWSojourner Pacific Northwest Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Feb 2005 Location: Portland Oregon Posts: 558	Re: Teledyne R22 and Meg problem It sounds like the sensor to me, but if you want to test it swap sensors 1 & 3. If it produces the same result in the sensor 1 position its definately the sensor.
(Offline)

23rd June 2006, 04:36	#4 (permalink)
ScubaG RBW Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2005 Location: USA , PA Posts: 24	Re: Teledyne R22 and Meg problem I have had atleast 2 sensors that didn't work correctly ,fresh out of the package. Another thing to remember also, when the sensor is in the package it basically absorb all the O2 and then go to sleep. When you open it up , it can take sometimes a day to fully (whake up). O2 normally gives it a jump start. The scary thing is what if you calibrate and the sensor is not delivering the max mV and half way in your dive whake up from the O2 and then deliver move mV. Luckely the voting will kick it out. Anybody experianced this before ?
(Offline)

23rd June 2006, 13:23	#5 (permalink)
LukeN New Member Current Rebreather/s: Optima Other Rebreather/s: Not Bought Yet Prism Topaz Join Date: Jun 2005 Location: Australia,West Aus Posts: 86	Re: Teledyne R22 and Meg problem I have to open the can of worms. Is this a r22 problem or the r22 and the Meg? Do the inspo's and the optima have this as well? __________________ Luke Nelson www.imagedive.com.au
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23rd June 2006, 14:25	#6 (permalink)
AD_ward9 RBW Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 2,011	Re: Teledyne R22 and Meg problem Quote: (Originally Posted by LukeN) I have to open the can of worms. Is this a r22 problem or the r22 and the Meg? Do the inspo's and the optima have this as well? There are too many threads covering this topic. See the two existing R22?? threads. We report on those threads design and quality problems with the R22, and suggest solutions. We have followed up with AI on the PSD-11-39 connectivity also, and expect a reply shortly. Cheers, Alex
(Offline)

23rd June 2006, 14:25	#7 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 991	Re: Teledyne R22 and Meg problem Quote: (Originally Posted by LukeN) I have to open the can of worms. Is this a r22 problem or the r22 and the Meg? Do the inspo's and the optima have this as well? Well, this is what i am trying to find out, i would like to know from other users if they have noticed that the S3 get voted out more often than S1 & S2, i would also like to know how sensitiv the membrane on the sensor is, should i attempt to clean the surface of it and see if i can get rid of that decolorization... One thing i have noticed latelly is that teledyne have some problem with their sensors, i have changed 4 sensors in the past 4 months and the mV just dropped very fast and i have not done anything to shorten them... /Jonny __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
(Offline)

23rd June 2006, 14:27	#8 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 991	Re: Teledyne R22 and Meg problem Quote: (Originally Posted by AD_ward9) There are too many threads covering this topic. See the two existing R22?? threads. We report on those threads design and quality problems with the R22, and suggest solutions. We have followed up with AI on the PSD-11-39 connectivity also, and expect a reply shortly. Cheers, Alex Hi Alex, the reason i did not post in those treads is that i want to find out something different, 1. Do people notice problem on S3 on the Meg 2. Can i clean the surface of the sensor. /Jonny __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
(Offline)

23rd June 2006, 17:05	#9 (permalink)
stoneytony New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Mar 2006 Location: cornwall Posts: 12	Re: Teledyne R22 and Meg problem Hi, Use the R22D BUD cells from APD, they are tested for correct output and linearity before despatch & all details are logged by APD. The bud cells are the pick of the bunch so as to speak. They are EXACTLY the same cell as the R22D. The R22D's you buy are probably the rejects! Tony
(Offline)

23rd June 2006, 17:12	#10 (permalink)
AD_ward9 RBW Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 2,011	Re: Teledyne R22 and Meg problem Quote: (Originally Posted by stoneytony) Hi, Use the R22D BUD cells from APD, they are tested for correct output and linearity before despatch & all details are logged by APD. The bud cells are the pick of the bunch so as to speak. They are EXACTLY the same cell as the R22D. The R22D's you buy are probably the rejects! Tony This is simply not true. The R22-D is a different product. It has a different thermistor arrangement and some differences in test. APD certainly does not send non-linear sensors back to Teledyne to sell as R22-Ds. As for correct output, Teledyne test them, ship them to APD and they remaining in their sealed package when APD send them to you. Cheers Alex
(Offline)

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