DIY O2 Analyzer

[coyote]

Stolen from another thread...

But anyone ever put one of these together?

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I've wondered about this for a while. The concept is pretty simple. Even without a "kit" this would just be some basic electornics.

[fkostyun]

I've actually been working on one here and there. I have it pretty much done, just need to order an O2 sensor. It looks good so far.

I did not use the el-cheapo kit, and choose to go my own route. I have built is on a large LCD screen (1.5") and it has a low battery indicator and a self power off.

The site I used as a "base" is from here, Construction, Operation, and Maintenance of an O2 Meter - I still have to make the circuit board an order the sensor. I should get that done sometime in the next few weeks or so.

I have been taking some notes along the way, so I can post them someone where or on my site.

[in_cavediver]

I built one based on the RC-Technology kit. Essentially, its simply a panel voltmeter with scaling resistors. They just saved me the math to build it from a meter I had laying around but had different scaling.

Works great and uses the R17-DR sensors. I have added a flowmeter and BC connector to make it easier to set proper flow rates.

Total cost was around $100

[fkostyun]

Well, I ordered the O2 sensor today - I choose the R22D style one (the oms brand) from leisure pro (it was in stock and they sell the wenoka knives and a few other little things I needed) Hopefully it'll all work! I can adjust the resistor as needed as I have plenty on hand to choose from.

There pretty easy to do!


I have updated some of my notes and put them online of my progress so far -

Franks Scuba Diving » Frank’s DIY O2 Analyzer

[matt_w]

Thanks for putting the information together. I have been wanting to take this project on and had been looking for some of those details. Great information.