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Jaycar Ampmeter

Submitted: Friday, Jun 02, 2006 at 19:48

Mark


Jaycar are advertising a new style of Ampmeter (QP2251) that plugs into a blade fuse holder.
http://www.jaycar.com.au/images_uploaded/Silicon_Chip_June_AU.pdf
Looks like it would be good for measuring fridge current draw etc, anyone tried one of these? just wondering how accurate they are.
Cheers
ThreadID: 34550 Replies: 6
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AnswerID: 176451   Submitted: Friday, Jun 02, 2006 at 21:26

Derek from Affordable Batteries & Radiators replied:

Looks like a nice gadget.

May be good for a quick test but I think the cable will cause a voltage drop and you will have fridge problems.

I would also like to read the feedback.

Regards Derek.
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Reply 1 of 6
FollowupID: 432510   Submitted: Friday, Jun 02, 2006 at 21:28

Derek from Affordable Batteries & Radiators posted:

It was hard to open your link.

Here is the picture.



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FollowupID: 432598   Submitted: Saturday, Jun 03, 2006 at 13:27

Member - Mike DID posted:

Here is a direct link to all the info they have

Site Link

"Auto Current Tester
This handy test unit makes it so easy to measure currents on individual circuits. Simply plugs into any standard blade type fuse holder and provides an easy-to-read LCD display of the circuits performance. Makes it easy to find that circuit which is draining your car battery! Will measure up to 48V max, current 20A. With 400mm cable length, the whole unit weighs only 68gm. Supplied with 12V A23 type battery. Measures 86 x 37 x 28.5mm. "

Mike
Mike R
FollowUp 2 of 2
AnswerID: 176453   Submitted: Friday, Jun 02, 2006 at 21:32

MartyB replied:

Looks good, it would be interesting to see how accurate they are.
I very much doubt the cable would cause a voltage drop, assuming it has a shunt built into the fuse connector.
Marty.
Reply 2 of 6
FollowupID: 432517   Submitted: Friday, Jun 02, 2006 at 21:51

Kiwi Kia posted:

i agree, it must be a shunt with that size cable so should work well.
FollowUp 1 of 1
AnswerID: 176456   Submitted: Friday, Jun 02, 2006 at 21:39

Member - Robert (WA) replied:

I bought one and it works fine good for cheacking what is drawing power when ecery thing is turned of

Robert
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Reply 3 of 6
FollowupID: 432521   Submitted: Friday, Jun 02, 2006 at 22:04

agsmky posted:

LOL......
FollowUp 1 of 6
FollowupID: 432539   Submitted: Friday, Jun 02, 2006 at 23:20

Geoff (Newcastle, NSW) posted:


Umm, correct me if my years of electrical engineering experience has failed me but, "good for cheacking what is drawing power when ecery thing is turned of" wouldn't everything being turned off result in no power being drawn?

Geoff.

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FollowUp 2 of 6
FollowupID: 432556   Submitted: Saturday, Jun 03, 2006 at 08:20

agsmky posted:

exactly :-)
FollowUp 3 of 6
FollowupID: 432559   Submitted: Saturday, Jun 03, 2006 at 08:46

Member - Robert (WA) posted:

was a silly thing to say

Robert
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FollowUp 4 of 6
FollowupID: 432568   Submitted: Saturday, Jun 03, 2006 at 09:28

Mark posted:

I think Robert is refering to fault conditions, ie everything is turned off but something in the circuit is still drawing power & therefore draining battery.
Got a huge water bill once with 80,000 litres more than what it should have been, turned everything "off" & meter was still going round, huh! starting digging up service pipe & bingo! small hole in high pressure pipe.
FollowUp 5 of 6
FollowupID: 432594   Submitted: Saturday, Jun 03, 2006 at 13:14

Member - Mike DID posted:

Even when you switch off everything in the car that CAN be turned off, there are still things that are drawing current.

Mike
Mike R
FollowUp 6 of 6
AnswerID: 176471   Submitted: Friday, Jun 02, 2006 at 22:33

AdrianLR (VIC) replied:

Looked at one in the shop. In fine print the instructions (or on the back - I don't remember) said that it should not be used for longer than 10 sec. So unfortunately you couldn't leave it plugged in. Didn't but one.
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Reply 4 of 6
FollowupID: 432537   Submitted: Friday, Jun 02, 2006 at 23:03

V8 Troopie posted:

that would make sense, you really would not want a fuse replaced by something that did not act like a fuse. Its a current tester with a digital readout.
Klaus
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FollowupID: 432597   Submitted: Saturday, Jun 03, 2006 at 13:21

Member - Mike DID posted:

I assume the projection out of the side of the probe is a Fuse Holder.

Mike
Mike R
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AnswerID: 176499   Submitted: Saturday, Jun 03, 2006 at 08:56

Mad Dog (Australia) replied:

I recommend the clamp meter from Dick Smith, measure the current anywhere without pulling fuses or breaking the wire, costs a fair bit more though.






Reply 5 of 6
FollowupID: 432562   Submitted: Saturday, Jun 03, 2006 at 09:05

revhead307 posted:

I just bought a clampmeter off a retiring mechanic, seems a pretty good one and i got it for $20 (garage sale)

have yet to try it out.

Rev
FollowUp 1 of 5
FollowupID: 432564   Submitted: Saturday, Jun 03, 2006 at 09:16

Mad Dog (Australia) posted:

DC ?




FollowUp 2 of 5
FollowupID: 432569   Submitted: Saturday, Jun 03, 2006 at 09:34

agsmky posted:

Yep....

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FollowUp 3 of 5
FollowupID: 432593   Submitted: Saturday, Jun 03, 2006 at 13:11

revhead307 posted:

From switching the dial around, its AC and DC as its displayed on the screen. the only info on it is 1000ACA Wattmaster DCM20, .

Quite large 25cm x 8cm....is an industrial size thingy...and the fact it was used by the mechanic cant make it too bad. Just wish i had some instructions.

Rev
FollowUp 4 of 5
FollowupID: 432596   Submitted: Saturday, Jun 03, 2006 at 13:19

Member - Mike DID posted:

Jaycar sell a Clampmeter for $100 that will read up to 200 amps on DC and AC.

Site Link

Excellent for monitor Alternator, Battery and load currents without having to open any wiring.

Mike
Mike R
FollowUp 5 of 5
AnswerID: 176587   Submitted: Sunday, Jun 04, 2006 at 00:10

Muzzgit (WA) replied:

Only problem is everything that I have added to the car for 12 power has circuit breakers, not a blade fuse. No good to me.
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Cheers,
Muzz.

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Reply 6 of 6
FollowupID: 432663   Submitted: Sunday, Jun 04, 2006 at 00:11

Muzzgit (WA) posted:

P.S is it just me, or does anyone else find their website awkward to negotiate ?
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Cheers,
Muzz.

I don't mind my missus having the last word, I just wish she'd get to it.
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