JUMO AQUIS touch S 202581, Installation Instructions Manual

Page: 121 / 130

121
9 Retrofitting optional boards
9.3 Ci base calibration
Analysis inputs for inductive conductivity sensors must undergo a Ci base cali-
bration during startup. A Ci base calibration must be performed when:
•
A new sensor or a new Ci optional board is being installed for the first time
• The sensor or a Ci optional board was replaced
• A Ci optional board was repositioned to a different optional board slot
• Data loss occurred as the result of failure of the buffer battery while the pow-
er was switched off
• Device software was updated
After the basic calibration has been performed, the measurement input can be
calibrated. Following successful calibration, the measurement input is ready for
use.
NOTE!
For the Ci base calibration, you need the JUMO Type 202711/21 calibration
adapter for inductive conductivity sensors (TN 00543395).
CAUTION!
A buffer battery is built into the device. Its purpose is to maintain data when the
device is switched off or if the voltage supply is interrupted. If the battery ap-
proaches the end of its operating life (approximately 7 years) then a battery
prealarm will indicate that status. When the battery is empty a battery alarm will
indicate that status. The battery must be exchanged before it is empty. The bat-
tery must be exchanged by the JUMO Service department! In this case, send
in the device!