Re: converting probles to clamp-on


"ehsjr" <ehsjr@xxxxxxxxxxxxxxxx> wrote in message
news:aqfDe.10216$R83.6916@xxxxxxxxxxx
> *selah* wrote:
> > "*selah*" <pzion.naax@xxxxxxxxx> wrote in message
> > news:dbi8k40r44@xxxxxxxxxxxxxxxxxxxx
> >
> >
> > Oops - sorry. I just realized - the manual calls for .05A
sensitivity -
> > not mA - so I can't use this meter. Got it confused because the test
can
> > also be done with a shunt and a meter that has .05 mV sensitivity.
> >
> > Thanks for the responses anyway.
> >
>
> You more than likely can use the meter.
> .05 A = 50 mA and it is likely that your meter has a
> range that will accomodate that. On your next post,
> tell us the model number of the Micronta meter,

The model # is 22-191

and
> what the current measuring ranges are.

The current drain is supposed to be less than .05A.

Also, as other
> posters have indicated, the information you provide
> is incomplete, making it next to impossible to give
> you a good answer. For example, you say "the manual
> calls for .05A sensitivity". What manual?

Ford shop manual.

What is
> the manual telling you to do?

Battery Drain Test with a Clamp-On DC Ammeter

Test Procedure

1. Turn the ignition to OFF and make sure there are no electrical loads.
After determining that the underhood lamp is shutting off properly,
disconnect the bulb.

2. Clamp the meter clip securely around the positive or ground battery
cable (all cables if two or more leads to the post).

NOTE:
Do not start vehicle with clip on cable.

Test Conclusion

The current reading (current drain) should be less than .05 amps.

Why are you doing it -
> what problem are you trying to solve or what information
> are you trying to gather? etc.
>

Our battery went dead recently although we just bought it new. We
recharged it. The charger showed that it was at very low charge at the
beginning (the charger ammeter was showing 10A going to the battery),
after about 6 hours it was fully charged and the charger ammeter showed
4A going to the battery. I tested the battery with a hydrometer and the
hydrometer practically didn't float, (it read at the top of the tube in
the dead battery region.) We took the battery in to a repair shop and
they tested it with their "snap-on" tester. I assume it was a load test.
It said the battery was good. These are the results:

Battery size 660 CCA
Available Amp 798 CCA
% Rated Capactiy 120%
Battery Temp 70 F
Initial Volts 12.90 V
Final Volts 12.33 V
Impedance 4.00 m ohms

They also tested the alternator (good) and starter (good).

> Ed

.

Relevant Pages

  • Re: Multimeter damaged when powered from regulated power suppy.
    ... that HV probe is protected with respect to the Probe GND. ... In that way the battery thing may be more dangerous thing because ... On The assumption that HV Probe is already protected in DMM ... There is no direct meter internal connection between the 9V battery ...
    (sci.electronics.basics)
  • Re: converting probles to clamp-on
    ... A = 50 mA and it is likely that your meter has a range that will accomodate that. ... Our battery went dead recently although we just bought it new. ... The charger showed that it was at very low charge at the ... Get a 12 volt bulb, and connect the bulb between battery post and the lead you've just removed. ...
    (sci.electronics.basics)
  • Re: converting probles to clamp-on
    ... A = 50 mA and it is likely that your meter has a range that will accomodate that. ... Our battery went dead recently although we just bought it new. ... The charger showed that it was at very low charge at the ... Get a 12 volt bulb, and connect the bulb between battery post and the lead you've just removed. ...
    (sci.electronics.basics)
  • Re: Multimeter damaged when powered from regulated power suppy.
    ... that HV probe is protected with respect to the Probe GND. ... In that way the battery thing may be more dangerous thing because ... On The assumption that HV Probe is already protected in DMM ... There is no direct meter internal connection between the 9V battery ...
    (sci.electronics.basics)
  • Re: Those days when nothing works
    ... The next morning, the charge indicator on the charger indicated low, but I ... Tried both meters on a fresh AAA battery, the old one gave me 1.56 volts, ... Can I believe it just cause the meter ...
    (rec.autos.tech)
Quantcast