Anyone find this interesting? (OMS sensors)

quickean · 12th February 2007, 22:14

Does anyone find what OMS has to say about Teledyne vs. OMS sensors interesting?

OMS FAQ http://www.OMSdive.com

Scroll down to the "Can I use a Teledyne sensor in the OMS oxygen analyzer? section?"

I've never heard of this before... don't know if it's true... if it is, why don't rebreathers use these things?

ajjaffe · 12th February 2007, 22:35

Quote: (Originally Posted by quickean)

Does anyone find what OMS has to say about Teledyne vs. OMS sensors interesting?

OMS FAQ http://www.OMSdive.com

Scroll down to the "Can I use a Teledyne sensor in the OMS oxygen analyzer? section?"

I've never heard of this before... don't know if it's true... if it is, why don't rebreathers use these things?

Very interesting.
Wonder if you can use that cell instead of the Teledyne sensor's in non-OMS equipment (e.g. same size as a R-22D)?

Maybe Patrick Duffy at OxyCheq can lend some insight????

-Adam

***jradomski*** · 12th February 2007, 23:10

Quote: (Originally Posted by ajjaffe)

Very interesting.
Wonder if you can use that cell instead of the Teledyne sensor's in non-OMS equipment (e.g. same size as a R-22D)?

Maybe Patrick Duffy at OxyCheq can lend some insight????

-Adam

Some OMS analyzers use sensor from city tech.. on average I find they are more linear and repeatable than teledyne sensors BUT and a BIG BUT is that the sensors are NOT DESIGNED for hyperbaric applications.. The city tech censors are designed for normal atmospheric +/- 10%..

The Teledyne sensors will work (although not as well in some analyzers) with the same voltage range, but city tech cells cant replace r22ds in rebreathers..

quickean · 12th February 2007, 23:26

Ah ha! Thanks for the input.

jaap · 12th February 2007, 23:32

I'd say more hilarious than interesting. Mix some scare tactics and boasting and there you go.

"the most accurate Oxygen Analyzer in the world"

***jradomski*** · 13th February 2007, 02:52

Quote: (Originally Posted by jaap)

I'd say more hilarious than interesting. Mix some scare tactics and boasting and there you go.

"the most accurate Oxygen Analyzer in the world"

The most accurate (when properly calibrated) analyzer I have used is the Alpha one.. its +/- .25% worse case and highly repeatable.. This accuracy was stated by a testing lab in the UK (where the product is made). It uses a city tech sensor-D02 I believe (not the same as the OMS one), but for the increased accuracy you pay with a slow response time (which some people are not willing to wait).. The cell is rated at 30 sec full scale and it has a typical lifespan of 4-5 years in the meter (2 year warranty).

The OMS cell is slightly slower than the Teledyne cells and has a longer expected life..

jaap · 13th February 2007, 11:30

Quote: (Originally Posted by jradomski)

The most accurate (when properly calibrated) analyzer I have used is the Alpha one.. its +/- .25% worse case and highly repeatable.. This accuracy was stated by a testing lab in the UK (where the product is made). It uses a city tech sensor-D02 I believe (not the same as the OMS one), but for the increased accuracy you pay with a slow response time (which some people are not willing to wait).. The cell is rated at 30 sec full scale and it has a typical lifespan of 4-5 years in the meter (2 year warranty).

The OMS cell is slightly slower than the Teledyne cells and has a longer expected life..

Not a fair comparison, but I regularily use far more sensitive, accurate and long lived O2 analyzers.

Like the Orbispher 3660 with an impressive measurement range from low ppm to high % O2 on a single point cal every odd year or so. Of course a quick look on the price tag indicates this is not exactly a sportsdivers tool...

Or the paramagnetic Servomex O2-analyser we have by our compressor.
This thing basically lasts forever.

***jradomski*** · 13th February 2007, 16:05

Quote: (Originally Posted by jaap)

Not a fair comparison, but I regularily use far more sensitive, accurate and long lived O2 analyzers.

Like the Orbispher 3660 with an impressive measurement range from low ppm to high % O2 on a single point cal every odd year or so. Of course a quick look on the price tag indicates this is not exactly a sportsdivers tool...

Or the paramagnetic Servomex O2-analyser we have by our compressor.
This thing basically lasts forever.

one question.. Why do you say not a fair comparison since they are both sold for the same purpose, and the Alpha 1 is not that much more money, especially once you factor in the cost of cells over 4 years..

I should have qualified... for diving use and portable, and with outhout the "lab grade" price tag.. I have used mass specs in the past that are even far more accurate..

jaap · 14th February 2007, 08:01

Quote: (Originally Posted by jradomski)

one question.. Why do you say not a fair comparison since they are both sold for the same purpose, and the Alpha 1 is not that much more money, especially once you factor in the cost of cells over 4 years..

I should have qualified... for diving use and portable, and with outhout the "lab grade" price tag.. I have used mass specs in the past that are even far more accurate..

Sorry the comment was about the far more expensive lab things I was talking about.

Have no experience of the Alpha, I'm sure its good enough just like most or even every sportdiving O2-analyser. Just wanted to comment on the ridiculus "the most accurate Oxygen Analyzer in the world" statment.

12th February 2007, 22:14	#1 (permalink)
quickean Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2006 Location: Michigan Posts: 127	Anyone find this interesting? (OMS sensors) Does anyone find what OMS has to say about Teledyne vs. OMS sensors interesting? OMS FAQ http://www.OMSdive.com Scroll down to the "Can I use a Teledyne sensor in the OMS oxygen analyzer? section?" I've never heard of this before... don't know if it's true... if it is, why don't rebreathers use these things?
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12th February 2007, 22:35	#2 (permalink)
ajjaffe New Member Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Dec 2006 Location: Camarillo, CA Posts: 47	Re: Anyone find this interesting? (OMS sensors) Quote: (Originally Posted by quickean) Does anyone find what OMS has to say about Teledyne vs. OMS sensors interesting? OMS FAQ http://www.OMSdive.com Scroll down to the "Can I use a Teledyne sensor in the OMS oxygen analyzer? section?" I've never heard of this before... don't know if it's true... if it is, why don't rebreathers use these things? Very interesting. Wonder if you can use that cell instead of the Teledyne sensor's in non-OMS equipment (e.g. same size as a R-22D)? Maybe Patrick Duffy at OxyCheq can lend some insight???? -Adam
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12th February 2007, 23:10	#3 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,890	Re: Anyone find this interesting? (OMS sensors) Quote: (Originally Posted by ajjaffe) Very interesting. Wonder if you can use that cell instead of the Teledyne sensor's in non-OMS equipment (e.g. same size as a R-22D)? Maybe Patrick Duffy at OxyCheq can lend some insight???? -Adam Some OMS analyzers use sensor from city tech.. on average I find they are more linear and repeatable than teledyne sensors BUT and a BIG BUT is that the sensors are NOT DESIGNED for hyperbaric applications.. The city tech censors are designed for normal atmospheric +/- 10%.. The Teledyne sensors will work (although not as well in some analyzers) with the same voltage range, but city tech cells cant replace r22ds in rebreathers.. __________________ 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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12th February 2007, 23:26	#4 (permalink)
quickean Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2006 Location: Michigan Posts: 127	Re: Anyone find this interesting? (OMS sensors) Ah ha! Thanks for the input.
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12th February 2007, 23:32	#5 (permalink)
jaap Normal people worry me Current Rebreather/s: Classic Kiss Other CCR RB80 / Clone Ray Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Ray Other SCR Home Build Join Date: Jun 2005 Location: Stockholm Sweden Posts: 445	Re: Anyone find this interesting? (OMS sensors) I'd say more hilarious than interesting. Mix some scare tactics and boasting and there you go. "the most accurate Oxygen Analyzer in the world" __________________ My initials: JAAP
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13th February 2007, 02:52	#6 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,890	Re: Anyone find this interesting? (OMS sensors) Quote: (Originally Posted by jaap) I'd say more hilarious than interesting. Mix some scare tactics and boasting and there you go. "the most accurate Oxygen Analyzer in the world" The most accurate (when properly calibrated) analyzer I have used is the Alpha one.. its +/- .25% worse case and highly repeatable.. This accuracy was stated by a testing lab in the UK (where the product is made). It uses a city tech sensor-D02 I believe (not the same as the OMS one), but for the increased accuracy you pay with a slow response time (which some people are not willing to wait).. The cell is rated at 30 sec full scale and it has a typical lifespan of 4-5 years in the meter (2 year warranty). The OMS cell is slightly slower than the Teledyne cells and has a longer expected life.. __________________ 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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13th February 2007, 11:30	#7 (permalink)
jaap Normal people worry me Current Rebreather/s: Classic Kiss Other CCR RB80 / Clone Ray Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Ray Other SCR Home Build Join Date: Jun 2005 Location: Stockholm Sweden Posts: 445	Re: Anyone find this interesting? (OMS sensors) Quote: (Originally Posted by jradomski) The most accurate (when properly calibrated) analyzer I have used is the Alpha one.. its +/- .25% worse case and highly repeatable.. This accuracy was stated by a testing lab in the UK (where the product is made). It uses a city tech sensor-D02 I believe (not the same as the OMS one), but for the increased accuracy you pay with a slow response time (which some people are not willing to wait).. The cell is rated at 30 sec full scale and it has a typical lifespan of 4-5 years in the meter (2 year warranty). The OMS cell is slightly slower than the Teledyne cells and has a longer expected life.. Not a fair comparison, but I regularily use far more sensitive, accurate and long lived O2 analyzers. Like the Orbispher 3660 with an impressive measurement range from low ppm to high % O2 on a single point cal every odd year or so. Of course a quick look on the price tag indicates this is not exactly a sportsdivers tool... Or the paramagnetic Servomex O2-analyser we have by our compressor. This thing basically lasts forever. __________________ My initials: JAAP
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13th February 2007, 16:05	#8 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,890	Re: Anyone find this interesting? (OMS sensors) Quote: (Originally Posted by jaap) Not a fair comparison, but I regularily use far more sensitive, accurate and long lived O2 analyzers. Like the Orbispher 3660 with an impressive measurement range from low ppm to high % O2 on a single point cal every odd year or so. Of course a quick look on the price tag indicates this is not exactly a sportsdivers tool... Or the paramagnetic Servomex O2-analyser we have by our compressor. This thing basically lasts forever. one question.. Why do you say not a fair comparison since they are both sold for the same purpose, and the Alpha 1 is not that much more money, especially once you factor in the cost of cells over 4 years.. I should have qualified... for diving use and portable, and with outhout the "lab grade" price tag.. I have used mass specs in the past that are even far more accurate.. __________________ 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. Last edited by jradomski : 13th February 2007 at 16:07.
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14th February 2007, 08:01	#9 (permalink)
jaap Normal people worry me Current Rebreather/s: Classic Kiss Other CCR RB80 / Clone Ray Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Ray Other SCR Home Build Join Date: Jun 2005 Location: Stockholm Sweden Posts: 445	Re: Anyone find this interesting? (OMS sensors) Quote: (Originally Posted by jradomski) one question.. Why do you say not a fair comparison since they are both sold for the same purpose, and the Alpha 1 is not that much more money, especially once you factor in the cost of cells over 4 years.. I should have qualified... for diving use and portable, and with outhout the "lab grade" price tag.. I have used mass specs in the past that are even far more accurate.. Sorry the comment was about the far more expensive lab things I was talking about. Have no experience of the Alpha, I'm sure its good enough just like most or even every sportdiving O2-analyser. Just wanted to comment on the ridiculus "the most accurate Oxygen Analyzer in the world" statment. __________________ My initials: JAAP
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