- 14 -
Note:
the brief stirring of the probe in solution is only to eliminate bubbles. Unlike
conventional galvanic/polarographic electrodes, the measuring via optical dissolved
oxygen probes does not require constant stirring of the solution or flowing fluid.
7.2 Users can read the measurements when appears and stays on. Note that the
measurement time is related to temperature. When the solution temperature and the probe
temperature is close, it takes about one minute to get the readings stablized. When the
solution temperature and the electrode temperature differ a lot, it takes about 3 minutes to
reach a stable reading. This is because the reading of dissolved oxygen is heavily
influenced by temperature, and the probe senses temperature slower than dissolved
oxygen.
8
Parameter Settings
Press in the measurement mode to enter the parameter setting mode P3.0, press
to switch the menu P3.0
→P4.0; In P3.0 mode, press to enter P3.1, press to
switch submenu P3.1
→P3.6; In P4.0 mode, press to enter P4.1, press to switch
submenu P4.1
→P4.8. See Table 2 for details.
Table-2 Parameter Setting List
Menu
Submenu
Parameter
Code
Content
P3.0
DO
parameter
P3.1
DO Units Selection
/
mg/L—ppm
P3.2
Resolution Selection
/
0.01/0.1 mg/L(ppm)
P3.3
Salinity Compensation Mode
/
Aut
—
Hnd
P3.4
Salinity Compensation
(
0 to 45) ppt
P3.5
Air Pressure Calibration
(60 to 120) kPa
P3.6
Back to Factory Default
No
—
Yes
P4.0
Basic
parameter
P4.1
Timing Storage
/
0:00
P4.2
Temp. Unit Selection
/
℃
—
℉
P4.3
Auto Lock
HOLD
Off
—
On
P4.4
Clear Storage
CLr
No
—
Yes
P4.5
Auto Backlight
On
—
Off
P4.6
Auto Power Off
On
—
Off