KROHNE OPTISENS PH 8590 - Manual (Page 30)

4
OPERATION
30
OPTISENS PH 8590
www.krohne.com 03/2012 - 4001931401 MA OPTISENS PH 8590 R01 en
Step 1: activating the manual hold function
• You have activated the manual hold function. Go to the next step and prepare the calibration
procedure. You have to return to the measuring mode.
• Press ^ until you reach the measuring mode again
Step 2: preparing the calibration procedure
• If you re-calibrate an existing electrode, remove the electrode from its respective assembly
and refer to Calibrating pH measurement on page 29.
• If you calibrate a new electrode, make sure that the electrode is correctly connected to the
converter.
• Check the electrode for damages, check the diaphragm for coating and rinse the electrode tip
with tap water and gently swipe it with a soft tissue.
• Provide two buffer solutions with the same known temperature: pH 4 and pH 7.
After activating the manual hold function and the preparative measures, you can get access to
the calibration procedure from the measuring mode in two different ways. Either you go via the
main menu setup
setup setup setup (step 3a) or via the main menu quick setup quick setup quick setup quick setup (step 3b).
• Press >>>> for more than 2.5 seconds, then release the button. You are on the main menu level. In the
upper line of the display "A" appears, beneath the main menu quick setup
quick setup quick setup quick setup is highlighted.
• Press     or     until the main menu quick setup quick setup quick setup quick setup is highlighted.
MAIN MENU
> A quick setup > A quick setup > A quick setup > A quick setup
B test
C setup
D service
• Press > >>> to enter the chosen menu.
You are on the first submenu level. In the upper line of the display "quick setup" and
A1" appears, beneath the submenu language language language language is highlighted.
• Press     or     until the submenu manual hold manual hold manual hold manual hold is highlighted.
• Press > >>> to enter the chosen menu.
You are on the second submenu level. In the upper line of the display
"manual hold" appears, beneath the option off off off off is highlighted
• Press     or     to choose the option on
• Press ^ to confirm the entered value.
.book Page 30 Monday, March 19, 2012 2:01 PM