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measuring current on dry cell
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pdai11 Offline
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Post: #1
measuring current on dry cell
Can you actually measure amp output on a HHO cell using multimeter probes as i don't have a clamp meter ?
I have a multimeter with a 20 amp max reading, dry cell is fitted onto car and running, so i adjusted the meter to 20a dc, red probe to positive of cell and black probe to negative of cell, no reading at all but if i set it to voltage, it comes up.
04-27-2013 11:41 AM
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drive-h2o Offline
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Post: #2
RE: measuring current on dry cell
you can use mV on multimeter to measure up to 2000A just build shunt 1mV equval to 1A you will find on youtube
04-27-2013 03:26 PM
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pdai11 Offline
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RE: measuring current on dry cell
Great, thanks i'll have a look, hope its not too complicated.
04-27-2013 04:16 PM
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conorg087 Offline
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RE: measuring current on dry cell
(04-27-2013 04:16 PM)pdai11 Wrote:  Great, thanks i'll have a look, hope its not too complicated.

disconnect + lead on call connect + lead on meter to the wire and black lead on meter to + on cell turn amps to 20 amps on meter make sure the leads are in proper positions on the meter if over 10-20 amps may blow the fuse in the meter
04-29-2013 02:16 PM
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pdai11 Offline
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Post: #5
RE: measuring current on dry cell
Tried that but still no reading, think i end up having to buy a clamp meter, thanks anyway
05-02-2013 12:34 PM
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conorg087 Offline
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Post: #6
RE: measuring current on dry cell
Sorry i never told you you must swap the red lead on the meter from v to a = amps 10A and do as i described above

disconnect + lead on call connect + lead on meter to the wire and black lead on meter to + on cell turn amps to 20 amps on meter make sure the leads are in proper positions on the meter if over 10-20 amps may blow the fuse in the meter
05-04-2013 10:40 AM
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pdai11 Offline
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Post: #7
RE: measuring current on dry cell
Hi conorg087
Done that as well but still no reading, if i switch to volt, there is a signal but i gave up and now ordered a clamp meter from ebay, thanks again.
05-06-2013 12:48 PM
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conorg087 Offline
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Post: #8
RE: measuring current on dry cell
could you send a picture of the meter a clamp meter is very handy for that when using a clamp meter you must only clamp the + wire only
05-06-2013 01:05 PM
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pdai11 Offline
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Post: #9
RE: measuring current on dry cell
Its just a standard handheld multimeter with 20a max ACa/DCa/ACv/DCv bought from Ebay, item number:120978034879 . I have already sent it back for an exchange of the clamp meter.
05-07-2013 11:34 AM
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conorg087 Offline
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Post: #10
RE: measuring current on dry cell
that meter will do the job for you
1/ put the black lead in to common
2/ put the red lead in to A
3/ turn the knob all the way over to A marked in blue
4/ you may have to press the blue button to set to d/c

find the fuse for the cell may be 30A spade fuse
disconnect the fuse put red lead into into the side where 12V is
put the black into the other side and you should get a reading

i hope this will help if not i will drew a picture
05-07-2013 12:27 PM
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