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Re: (ET) e-meters on ETs
I have been using an E Meter for a number of years. I run the
meter power on 18 volts and monitor 36 volts. I do not use
the prescaler or meter power supply. Work
good! Very accurate .
Rob.
At 11:19 AM 1/28/04 -0500, you wrote:
>To those who have used an e-meter on their elec-traks, how have
you
>hooked up the meter? The standard meter is meant for 12 & 24
volt
>battery packs, and the specifications say 40 volts max on the
power
>input and 50 volts max on the voltage sense input.
>
>So... for power either need to tap the pack (3-4 batteries), or
use a
>dc/dc convertor, or maybe some sort of voltage regulator (which
wastes a
>couple of watts as heat).
>
>For the voltage sense, the pack probably stays under 50 volts on
charge
>but might go a little over. Have folks not worried about it and
been OK,
>or used the pre-scaler (0-100 volts), or maybe a zener to clip
off above
>50 volts (but making voltage readings wrong if it gets that
high)?
>
>
>And for those who haven't seen an e-meter, it is $200
"fuel" gage that
>uses a microcomputer to track battery voltage and current and
then based
>on battery parameters you program in it determines the
approximate state
>of charge.
>
>_________
>Jim Coate
>1992 Chevy S10
>1970's Elec-Trak
>
>
>_______________________________________________
>Elec-trak mailing list
>Elec-trak cosmos phy tufts edu
>
- No trees were destroyed in the creation of this E Mail, however many
electrons were severely inconvenienced! RAV
(DofTI)