Problems with TDL O2 - HE analyzer

Milbrath · 30th June 2008, 02:24

Back in January I bought a TDL Tek Check O2 - HE Analyzer. I could not get a consistent O2 reading it seemed whenever I moved it to analyze other cylinders I would get varying degrees of discrepancy comparing readings to my mini Ox.

Then I recalibrated the Tek Check to 20.9 laying flat, next I held the unit vertically and the reading increased to 22.5 to 23, next I held it upside down and the reading increased to 26 to 27. I thought it may be a bad sensor or a problem with the circuit board. I contacted TDL they said to send it back it was probably the sensor.

Well I received the unit from being repaired and it is still doing the same thing. TDL did not give a report of the tests or repairs that may have been performed.

Today I removed the unit from the case to see if I could isolate the problem. Removing the sensor from the holder moving it in several different positions the results were similar to above. (see pictures) I unplugged the sensor thinking that the digital reading would 0 out instead it went to a -30 then to -70. (see pictures)

My conclusion is the sensor is bad, although I question why the digital reading did not 0 out when unplugged, and went from -30 then to -70.

I hope this is an isolated incident, although I am concerned because the unit was not repaired properly the 1st time and leads me to believe that there may be other units acting the same way.

I am encouraging that anyone that has this analyzer to check it. Please post your results to determine if mine is an isolated problem.

I have not had a problem with TDL and or their service and I am sure they will fix mine.

For some reason I cannot attach pictures so you can go to Deco Stop under the same title.

Jeff Milbrath

Milbrath · 30th June 2008, 03:58

Help I cannot post pictures?

30th June 2008, 02:24	#1 (permalink)
Milbrath New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jul 2006 Location: West Palm Beach, FL Posts: 2	Problems with TDL O2 - HE analyzer Back in January I bought a TDL Tek Check O2 - HE Analyzer. I could not get a consistent O2 reading it seemed whenever I moved it to analyze other cylinders I would get varying degrees of discrepancy comparing readings to my mini Ox. Then I recalibrated the Tek Check to 20.9 laying flat, next I held the unit vertically and the reading increased to 22.5 to 23, next I held it upside down and the reading increased to 26 to 27. I thought it may be a bad sensor or a problem with the circuit board. I contacted TDL they said to send it back it was probably the sensor. Well I received the unit from being repaired and it is still doing the same thing. TDL did not give a report of the tests or repairs that may have been performed. Today I removed the unit from the case to see if I could isolate the problem. Removing the sensor from the holder moving it in several different positions the results were similar to above. (see pictures) I unplugged the sensor thinking that the digital reading would 0 out instead it went to a -30 then to -70. (see pictures) My conclusion is the sensor is bad, although I question why the digital reading did not 0 out when unplugged, and went from -30 then to -70. I hope this is an isolated incident, although I am concerned because the unit was not repaired properly the 1st time and leads me to believe that there may be other units acting the same way. I am encouraging that anyone that has this analyzer to check it. Please post your results to determine if mine is an isolated problem. I have not had a problem with TDL and or their service and I am sure they will fix mine. For some reason I cannot attach pictures so you can go to Deco Stop under the same title. Jeff Milbrath
(Offline)

30th June 2008, 03:58	#2 (permalink)
Milbrath New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jul 2006 Location: West Palm Beach, FL Posts: 2	Re: Problems with TDL O2 - HE analyzer Help I cannot post pictures?
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