- 12 -
2)
When testing purified water like spring water or drinking water, it will take longer for the
readings to get stabilized (typically 3-5 minutes) because there is very few ions left to
be detected by the sensor in those purified water.
3)
Purified water such as distilled water and deionized water are recommended for only
rinsing the probe for the best result. Never store the electrode in distilled or
deionized water, for it could cause permanent damage to the electrode.
4)
The 201T-F pH Electrode is NOT suitable for testing high-temperature samples
(>176˚F). Testing high-temperature samples could cause permanent damage to the
electrode. A specialized electrode such as LabSen
TM
213 (up to 225˚F) should be used
in this situation.
5)
The electrode housing is polycarbonate. When using cleaning solutions, take cautions on
carbon tetrachloride, trichlorethylene, tetrahydrofuran, acetone, etc., which will dissolve
the housing and invalidate the electrode.
5.5
Parameter Setting
5.5.1 pH measuring parameter setting
Chart (4-1)
Mode
Parameter Settings
Code
Parameters
P1
pH buffer solution series
selection
USA (Europe & U.S.A series)
NIS (NIST series)
CH (China series)
P2
Time setting for timing
measuring
0-99 min
P3
Unit of temperature
˚C - ˚F
P4
Date setting
Date
Month / Day / Year
P5
Time setting
Time
Hour / Minute
P6
Restore factory setting
OFF - On
5.5.2. Select pH buffer solution standard (P1) with
(a) Long press
< MODE >
key to enter into 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
(Chinese series) — 1.68, 4.00, 6.86, 9.18 and 12.46 pH
(c) Press
< MODE >
key to enter into next parameter setting or press
< ENTER >
key to
conform and return to measuring mode.