Sensor for monitoring ozone concentration in room air 2

[LowEnergyParticle]

I am looking for a sensor or analyzer to measure ozone concentrations in room air. The "ozone marketplace" seems to have more than its fair share of snake oil. I want to find the ozone concentration in ppm while running a new piece of equipment we're building, so I really only need it for a few dozen measurements. Something that puts out a proportional current or voltage would be fine - I don't need much in the way of bells & whistles.

Thanks very much for your help!
David

 

[moltenmetal]

Believe me, if you have a ppm of ozone in air you won't need a sensor to detect it! Exposed to a couple ppm for a few minutes you'll soon be flopping around on the ground like a fish, gasping for breath...

You need a device capable of measurements at ppb (parts per BILLION) concentrations.

There are several different types used. UV absorption type units are easiest, requiring no reagents etc., but can be confounded by lots of other stuff in the air giving false positives.

I agree wholeheartedly about the snake-oil salesmen: something about advanced oxidation seems to bring out the whackos and scam artists. Ozone is a dangerous material and should be treated with great care. Every molecule you breathe does you damage.

 

[unclesyd]

Here is the Draeger tube line of detectors. They have various forms of sampling devices as well as fully automatic samplers. We use numerous varieties of these tubes both for lab work and vessel entry atmospheric testing.

http://www.draeger.com/ST/internet/...s/ShortTermMeasurement/pd_shortterm_tubes.jsp

Here is a competing line of gas testing equipment which at one time was interchangeable with the aspirating devices.

http://www.zefon.com/store/category/gas-detection-equipment/

Here is a Zefon single gas monitor for Ozone. This meter is more of an lets hope we don't any type.

http://www.zefon.com/store/product/bw-gasalert-extreme-ozone-o3-detector.html

Look around both sites as there are numerous approaches to your problem.

 

[LowEnergyParticle]

Moltenmetal and UncleSyd,

Thank you very much for both the safety reminder and the links and descriptions of instruments!

After looking around the sites and talking to a few tech support people, I think I'm going to end up with the Draeger tubes. It seems like a simple system, no calibration gas required, and for the number of measurements I need to make (n<50) the tubes and sampler pump won't break the budget.

Thank you again, I really appreciate the help!
Dave