User Guide

9
For other buffer temperatures, refer to
page 11 for the appropriate mA / pH
reading.
• Rinse the electrode with
tap water or distilled water
and a small amount of
pH 4.01 or 10.01 buffer so-
lution or immerse it in the
pH 4 rinse solution (2nd
calibration point). Dip the
electrode and the tempera-
ture probe into pH 4.01 (or
10.01) calibration buffer so-
lution, shake briefly and
wait for a few minutes for
reading to stabilize.
• Adjust the slope trimmer until the amme-
ter reads 8.58 mA or the display shows
"4.01" at 25°C. For other buffer tempera-
tures, refer to page 11 for the appropri-
ate mA / pH reading (HI 8614L).
If you are using pH 10.01
buffer solution adjust the
slope trimmer until the am-
meter read 15.43 mA at
25°C (77°F) or the value
indicated at page 11.
FOR HI8614L ONLY:
The Display Module is factory calibrated, so
that the LCD display results are referred to
the 4-20 mA loop current (e.g. LCD displays
0.00 pH when loop current is 4.00 mA and
displays 14.00 pH when current is 20.00mA).
HI 7004
mA
mA
SLOPE ADJUSTMENT
OFFSET ADJUSTMENT