26
Peukert's Exponent is a number which describes how battery capacity shrinks
as the rate of discharge is increased. Your Meter uses a number between 1.00
and 1.50 to describe how fast a particular battery will "shrink" when a heavy
load is connected. A more complete technical discussion of the Peukert Expo-
nent, and typical value tables is included on Pages 48-41.
The key thing you need to know is that the Peukert Expopnent set at the factory,
1.25, will be satisfactory for many liquid cell batteries. Gel cell batteries, or
liquid cells with atypical plate structures, may require a different Peukert Expo-
nent. To change the Peukert Exponent, proceed as follows:
1)
Press and hold the
SET
button for 3 seconds to enter SET UP (and Ad-
vanced Functions) menu.
SEL
appears in the display. Press
SEL
and notice that
the green
LED is on.
2)
Press
SEL
again and note that the
light comes on. Continue to press
the
SEL
button until the letters F8 appear in the display. This will require
eighteen presses of the
SEL
button . The right most LED of the bar graph with
the legend
FUNC
under it will be lit.
3)
Now press and hold the
SET
button. The default value of 1.25 (or the
previously programed value) will appear in the display. The range of values is
from 1.0 to 1.50. Holding down the
SET
button will cause the display to
increment in 0.01 steps, after 4 increments the display scrolls faster. When the
value you want appears, release the
SET
button. If you overshoot your capacity
you will have to scroll all the way to 1.50 after which the display will roll over
to 1.00 and continue incrementing. You also have to scroll all the way through
to declare exponents between 1.00 and 1.25.
4)
After 10 seconds the meter exits the Set Up mode and the selected value is
stored as the new Peukert's exponent and the display returns to
(Volts).
Puekert Exponent
Содержание E-Meter
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