25
If using manual temperature compensation, the first display will be:
Cal Temp °F/C 68
Use the arrow keys to enter the actual temperature of the buffer solutions. Press
ENTER
to go on to the
next step. If using automatic temperature compensation, this display will not appear.
Rinse Electrode
Remove the electrode from the process and rinse it off. Press
ENTER
to go to the next step.
First Buffer
This is a prompt to place the electrode in the first buffer. In a few seconds the controller will
automatically go to the next step.
Buffer 4.00
Use the arrow keys to change the value of the buffer being used, then press ENTER.
1st Buffer 4.00
The bottom line will display "1st Buffer" on the left hand side and "4.00" on the right hand side. Use
the arrow keys to set the pH value of the 1st buffer, then press
ENTER
. The top line will now show the
temperature and the mV input from the electrode. The mV will blink until the value is stable. The
controller will automatically go onto the next step or you may press
ENTER
to go to the next step.
Cal Successful/Cal Failed
If the electrode response is good, then the display will read "Cal Successful". If the controller can not
calculate an acceptable slope from that mV reading, it will read "Cal Failed". A failure usually means
that the electrode needs to be cleaned or replaced.
1 Pt Calibration for pH
electrodes, not using
Auto Buffer Recognition
Continue Y
The controller will hold this display until you replace the electrode in the process and press
ENTER
.
Control will not begin until
ENTER
is pressed or 10 minutes go by.
Rinse Electrode
Remove the electrode from the process and rinse it off. Press
ENTER
to go to the next step.
First Buffer
This is a prompt to place the electrode in the first buffer. In a few seconds the controller will
automatically go to the next step.
Input 96 mV
The display will show the mV reading from the electrode. The entire number will blink until the
reading is stable, then the display will change to:
Buffer 96
Now you can change the mV value displayed to the known value of the buffer, by using the arrow keys
and pressing
ENTER.
Cal Successful/Cal Failed
If the electrode response is good, then the display will read "Cal Successful". If the controller can not
calculate an acceptable slope from that mV reading, it will read "Cal Failed". A failure usually means
that the electrode needs to be cleaned or replaced.
1 Pt Calibration for ORP
electrodes (no Auto
Buffer Recognition
available)
Continue Y.
The controller will hold this display until you replace the electrode in the process and press
ENTER
.
Control will not begin until
ENTER
is pressed or 10 minutes go by.
Days Btwn Cal
Use the arrow keys to set the number of days that you would like to go by before recalibrating the
electrode. The controller will prompt you to recalibrate when that time has expired. Setting the number
of days to zero will disable this feature.
Use Buffer Rec
Use the Up and Down arrows to toggle between Y (yes) and N (no). If you choose to use automatic
buffer recognition, then the controller will recognize which buffer solution the electrode has been
placed in. If you choose not to, then you will have to enter the information manually during the 1 or 2
point calibration procedures. Press
ENTER
to accept the choice displayed.
Buffer Set
This menu will only appear if you have decided to use automatic buffer recognition. Press
ENTER
to
change the type of buffers that will be used. Use the Up and Down arrows to toggle between US buffers
(pH 4, 7 and 10) or DIN standard buffers (pH 1
.
09, 4.65, 6.79, 9.23 and 12.75.) then press
ENTER
to
make your selection.
