9
© Agrowtek Inc. | www.agrowtek.com
pH calibration is a two-point process requiring both pH 7 and pH 4.01 calibration solutions. The temperature
probe must be inserted into the calibration solution at the same time as the pH probe.
GPH MNU
H/L
72.0
6.10
1550
600
°F
pH
uS
mV
DWN ENT
UP
EXIT
ALARMS
CALIBRATION
SETUP
PUMPS
MENU
pH Calibration
2. Follow the instruc-
tions then press
NEXT.
4. Clean the probes with DI/RO
and change calibration solution.
3. When the reading
is stable, press
NEXT.
5. When the reading is stable, press
DONE
to calibrate pH 4.01 and finish calibration.
NEXT
EXIT
PH
LAST CALIBRATION
10/19/2017
STEP 1:
PUT TEMPERATURE
AND PH PROBE IN
PH7
SOLUTION.
NEXT
EXIT
PH
WAIT FOR READING
TO STABILIZE THEN
PRESS NEXT.
7.12 pH
NEXT
EXIT
PH
STEP 2:
PUT TEMPERATURE
AND PH PROBE IN
PH4.01
SOLUTION.
7.00 pH
DNE
EXIT
PH
WAIT FOR READING
TO STABILIZE THEN
PRESS DONE.
4.14 pH
pH 7 Calibration
Solution
pH 4.01 Calibra-
tion Solution
1. Select
CALIBRATE
from calibration menu.
DWN ENT
UP
BACK
CALIBRATE
ADVANCED
CALIBRATION
DWN ENT
UP
BACK
TEMPERATURE
PH
COND
CALIBRATION
DO
1. Select
CALIBRATE
from calibration menu.
3. Adjust to the desired
value. Hold
ENT
to jog
the value by 10x.
2. Press
NEXT
to con-
tinue.
4. Confirm the new
reading or press
NO
.
DWN ENT
UP
BACK
+0.1
-0.1
OFFSET
72.2°F
NEXT
EXIT
TEMPERATURE
LAST CALIBRATION
10/19/2017
PRESS NEXT TO
ADJUST
TEMPERATURE
READING.
NO
YES
CONFIRM?
72.2 °F
68.1 °F
OLD
NEW
DWN ENT
UP
BACK
CALIBRATE
ADVANCED
CALIBRATION
GPH MNU
H/L
72.0
6.10
1550
600
°F
pH
uS
mV
DWN ENT
UP
EXIT
ALARMS
CALIBRATION
SETUP
PUMPS
MENU
Temperature Calibration
DWN ENT
UP
BACK
TEMPERATURE
PH
COND
CALIBRATION
DO