24
Second Buffer
This is a prompt to place the electrode in the second buffer. Again, in a few seconds the controller will
automatically go to the next step.
Input XXX 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 XXX
Now you can change the mV 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 mV output of the
electrode did not change enough between the two buffer solutions, it will read "Cal Failed". A failure
usually means that the electrode needs to be cleaned, or replaced.
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.
1 Pt Calibration
Press
ENTER
to perform a 1 point calibration of the electrode.
Note: 1 point calibration instructions are given in the following order:
pH electrodes, using Auto Buffer Recognition
pH electrodes, not using Auto Buffer Recognition
ORP electrodes (Auto Buffer Recognition not available)
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. 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.
1st Buffer 4.00
The top line will show the temperature and the mV output from the electrode. These values will blink
until they become stable.
The bottom line will read "1st Buffer" on the left hand side and either "??.??" or a pH value on the right
hand side. If it reads a pH value, that means that it has recognized the buffer solution. The controller
will then go on to the next step.
If it reads "??.??", that means it hasn't recognized the buffer solution because the mV output of the
electrode is too far away from a standard buffer solution's theoretical mV value. If it can't recognize the
buffer solution, the controller will beep and display "Unknown Buffer", and then display its best guess.
Press
ENTER
to accept that guess, or change the value to the correct one using the arrow keys.
If you press
ENTER
when it reads “??.??”, the display will switch to “Buffer Override” and allow you
to manually enter the buffer value.
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, 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.
