15
3) Wait around 2 hours for the dissolved oxygen and temperature readings to stabilize.
Pressing the
“ENTER”
key will start the calibration.
4) If the user is calibrating in
“%”
then the 100% calibration will be displayed. An error will
be displayed if the input is not within the normal DO range. A “
” icon will flash.
Pressing the
“ENTER”
key will start the calibration. If the input is not within the DO
calibration limit then an error message will be displayed. If all is well then it will save
the new calibration and move to the next page.
5) If the user is calibrating in
“ppm”
then the current reading in ppm will be displayed.
Press the “
ENTER”
key, the unit will capture the current value and then the user can
change the value by using the “
MODE”, “UP”
and
“DOWN”
keys. If the user is
satisfied with the ppm setting, press the
“ENTER”
key to save the new calibration. If
the DO input is within calibration range then the new calibration will be saved and
move to the next page, otherwise an error message will be displayed.
6. DO control settings page
a. Screen illustration
DO CONTROL SETTINGS
1.HI RELAY 3:100.0%
3.HYSTERESIS:EDGE
2.LO RELAY 4: 0.0%
4.HYSTERESIS:10.0%
* SAVING *
1)
HI RELAY 3
- The control type for this relay is changeable, the user can choose “
HI
” -
type or “
LO
” - type. In HI-type,
RELAY 3
will turn
ON
if the DO is greater than the
RELAY 3
setting. In LO-type,
RELAY 3
will turn
ON
if the DO is less than the
RELAY 3
setting which is modified by the hysteresis value and hysteresis mode.
Use
“UP”
and
“DOWN”
to change the
RELAY 3
type then press
“ENTER”
key to
save. After selecting the
RELAY 3
type, the user can now select the
RELAY 3
setting.
Use
“UP”
and
“DOWN”
keys to change the blinking digit. Use the “
MODE”
key to
select another digit and the
“ENTER”
key to save the new setting.
2)
LO RELAY 4
- The control type for this relay is changeable, the user can choose “
HI
”-
type or “
LO
” type control. In HI-type,
RELAY 4
will turn
ON
if the DO is greater than
the
RELAY 4
Setting. In LO-type,
RELAY 4
will turn
ON
if the DO is less than the
RELAY 4
setting which is modified by the hysteresis value and hysteresis mode.
