Means of measuring hydrogen levels

[cliffbeaty]

I use the submerged bottle method myself. I hve searched for acceptable (cheap) flow meters, but we have to consider that we are working with Hydrogen AND Oxygen. Most meters are calibrated for one gas only. Additionally, be are probably producing a combination of brown's gas and Hydroxy at levels that we cannot calculate. The best thing i could come up with was to procure an oxygen meter and compare it to the results to the submerged bottle method to sort of calibrate the difference. The only real benefit that I got was to know that I was producing more or less gas as the electrolyzer ran. Mine was a medical apparatus and I scrapped the idea, after the ball started hanging up in condensate. Back to the bottle!!!
Cliff

[Bob Boyce]

[drewsky]

HI

I'm still pondering on a way to electroniclly measure gas production with out spending a fortune on a gas flow meter and I'm thinking what about an orifice flow meter.

www.flowmeterdirectory.com/flowmeter_orifice_plate.html

The construction of the tube, orifice and the 2 pressure ports shouldn't be to difficult.

The pressure difference from before and after the orifice could be measured with a pressure differential sensor like one of these

www.freescale.com/files/sensors/doc/dat ... PX2102.pdf
My local electronics store sells them for around $30

Certain specifications would have to be calculated i.e tube diameter, orifice diameter and the 2 port locations.
The presure difference between each port would be measured by the differential sensor. output (0-12v) directly related to pressure difference and directly related to the square root of the flow.

0-12v output would be real handy if using a computer interface micro controler, (real time gas production rate versus arbitrary wave function superimposed on to DC)

Would love to hear you'r thoughts on this idea

Thanks in advance
Drewsky[/code]

[chemelec]

[chemelec]