YOKOGAWA FC400G, User Manual, Page: 45 / 91

< 5. Key Operation and Display >
5-14
IM 12F5A1-01E
(d) <*AZ.CAL> (Auto Zero Calibration mode)
The activated charcoal filter is used and auto calibration is performed. To turn this function ON, service
code 09 [Wash / Auto Calibration] switch is set to “1”. The default setting is “0” for Wash. For Auto Zero
Calibration mode, the calibration interval “*INT D” (unit: days), calibration setup time “*WT.min” (unit:
minutes), and stabilization (settling) time “*RT.min” . (unit: minutes) are set. The optimum time settings
depend on the sample and the measurement environment.
*
INT D
10 . 0
F5.4.2-3a.ai
*
RT.min
0 5 0
*
T.ON
*
WT.min
0 1 0
*
T.OFF
TIMER OFF
TIMER ON
YES
ENT
ENT
ENT
YES
NO
NO
*
AZ.CAL
<
*
PLAT>
YES
Set calibration interval (Note 2)
Set calibration setup time
Set stabilization (setting) time
Note
Note 2 : When the calibration interval is more than
one day, the zero filter flushing functions
(to cleanse the activated charcoal filter and
help prevent poisoning of the filter) automatically
wash the filter with zero water once a day.
Note : The previously-selected status is displayed.
(e) <*PLAT> (Plateau Mode)
Press the
＊
key to enter the setting level and press the
NO
key to select < *PLAT >.
Press the
YES
key with *MEAS displayed. When the plateau characteristic collection performs, enter
YES
key again.
In the plateau characteristic collection function (“ *MEAS”), setting initial applied voltage, step
applied-voltage and step count and then selecting “*START” causes mg/l (or ppm) indication to blink,
displaying the applied voltage. When the diffusion current value stabilizes, the applied voltage and
diffusion current values are stored in the memory to apply the next step voltage. A step not needed
can be aborted using the
ENT
key. This erases data in that step (“---” appears when such data is
read), and the operation moves to the next step.
When the voltage has been applied to all steps, “*READ” appears. The data readout function
(“*READ”) displays in turn the data acquired previously each time the
YES
key is pressed.