KROHNE OPTISENS PH 9500 - Manual (Page 32)

4
OPERATION
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OPTISENS PH 9500
www.krohne.com 08/2012 - 4001929601 MA OPTISENS PH 9500 R01 en
Step 1: activating the manual hold function
• You have activated the manual hold function. To 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 sensor, remove the sensor from its respective assembly
(for further information refer to Mounting to a flow-through holder on page 18 or refer to
Calibrating pH measurement on page 31).
• If you calibrate a new sensor, make sure that the sensor is correctly connected to the
converter.
• Check the sensor for damages, check the diaphragm for coating and rinse the sensor 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 (step 3a) or via the main menu 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 is highlighted.
• Press or until the main menu quick setup is highlighted.
MAIN MENU
> 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 is highlighted.
• Press or until the submenu 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 is highlighted
• Press or to choose the option on
• Press ^ to confirm the entered value.