How-To YAHHO Flow Meter - Part 1

How-To build the "Yet Another HHO" Flow Meter

Technically, this device is one form of an Eudiometer.

Materials List:

1 - Clear Polycarbonate Tube Lamp Guard by Westinghouse. For use with 48" T12 lamps. (with endcaps)

1 - 1 1/2" thinwall PVC pipe (suggest 3 or 4 feet in length) Inside diameter MUST be only slightly larger than the clear tube above!

1 - 1" PVC pipe any gauge (suggest 3 to 4 feet in length) Must match the end caps selected below!

2 - 1" PVC end caps (rounded ends rather than flat recommended) Outside diameter MUST be only slightly smaller than the clear tube above!

1 - 1 1/2" to 3" adaptor (this will become the base)

1 - 3/8" 90 deg nipple fitting. (suggest Nylon rather than Brass)

1 - Roll of 3/4" 3M brand Electrical tape. suggest black, but any color should work. (Needs to be soft electrical tape that can stretch easiely without harden over time.) (Lowes)

A length of 3/8" tubing as the feeder gas line. Any suitable length will do. MUST be the same size as the fitting mentioned above. (Lowes)

Some good quality 40mil or better clear packing tape. To seal the end of the Clear Tube above. (Staples Office Supply)

PVC glue (Lowes)

PVC Primer/Prep (Lowes)

Optional Materials:

Epoxy or Silicon sealant

(All materials were acquired at Ace Hardware, Winter Garden, FL except where noted)

Category:

Science & Technology

Tags:

• hho
• hydrogen
• generator
• hydroxy
• water
• gas
• yahho
• flow
• meter
• how-to
• eudiometer

[advancedhydrogen]

i wonder if it would be a good idea to have a hose go up through the inner tube and terminate at the top so that you are not pushing air as air has resistance hho has smaller molicules and flows faster.. just a thought.. i like the design good job luther..scott

[lutherp40]

Thank you.

I added tubing to the center of the later versions (the ones I was selling previously), but not for the reason you mentioned.

It was more as a safety concern than anything else.

[myhydroxy]

that inside tube is genius.

Its a tough balance between working height/size/materials, ease of use and build and using available parts huh.

Nicely done!

[lutherp40]

Thank you. I appreciate the compliment.

I hear tell of some larger diameter clear packing tube out there, but I have yet to see one.

If someone was looking for a larger capacity meter, I would suggest finding a larger diameter light weight measurement tube as the larger volume versions of this design are quite tall.

[Cchange4us]

funny name, good little thing you have there but couldnt you just use a flow meter from the welding shop?

[lutherp40]

Yes you could if all you wanted was an estimate of volume.

If you are trying to prove the efficiency of your cell to others (MMW), then one needs to know the volume of gas that was released within a set period of time accurately.

Bouncing ball flow measurements are subjective at best. They have their place and can be useful, but calculating accurate efficiency ratings is not one of them.

Cheers

[hydropurefuel]

I found there was some friction using the 1 1/2" thinwall pvc for the maintube. I used sch 40 2" pvc for my maintube and found that it moves more freely.

I don't believe the exact diameter of this tube is that critical since it's basically used to create the water seal. The inner 'gas supply' tube is more important to prevent flopping and extra volume that might be introduced as the innner 'meter tube' rises.

I agree your design is great and thanks for sharing your ideas and clear instruction.

[Cchange4us]

i guess thats fair enough

[HHOdude]

I like your flow meter design! We need more accurate measurements.

[lutherp40]

Thank you very much.