- 12 -
P5
Back light display time setting
BL
0-1-3-6min
P6
Auto power off setting
AC
0-10-20min
P7
Restore to Factory Default
OFF-On
5.4.2. pH buffer solution series selection (P1)
(a) Press
key, meter enters P1 mode: see picture (4-2).
(b) Press
or key to choose buffer solution series:
( Europe & U.S.A series) —1.68, 4.00, 7.00,10.01 and 12.45 pH
(NIST series) — 1.68, 4.01, 6.86, 9.18 and 12.45 pH
( (China series) — 1.68, 4.00, 6.86, 9.18 and 12.46 pH
(c) Press
key to enter next parameter setting or press
key to confirm and return to
measuring mode.
5.4.3. Purified water pH temperature compensation setting (P2)
(a) Short press
key in the mode P1, the meter enters mode
P2, see picture (4-3).
(b) Press
or
to choose
ON
or
OFF.
(c) Press
key to enter next parameter setting or press
key to confirm and return to
measuring mode.
(d) The default setting is “ OFF ”.
Note: A PU-1 icon will appear in the upper right corner of the LCD if purified water
temperature compensation function is set by the user.
5.4.4. Ammonia added purified water pH temperature compensation
setting (P3)
(a) Short press
key
in mode P2 to enter mode P3, see
picture (4-4).
(b) Press
or
key to choose
ON
or
OFF
(c) Press
to enter next parameter setting or press
key to confirm and return to
