English
9
Section 5
Maintenance
DANGER
Only qualified personnel should conduct the tasks described in this
section of the manual.
Proper maintenance of the measuring windows in the sensor is critical for
accurate measurements. The measuring windows should be checked monthly for soiling
and the wiper checked for wear.
Important Note:
The seals must be replaced every 2 years by the Service Department. If
the seals are not changed regularly, water may enter the probe head and seriously
damage the instrument.
5.1 Maintenance Schedule
5.2 Cleaning the Sensor Measuring Windows
CAUTION
Always wear
•
Safety glasses,
•
Gloves and
•
Overalhandling hydrochloric acid and observe safety regulations.
The measuring windows are made of quartz glass. If necessary, they can be cleaned with
a cleaning agent and a cloth.
Maintenance Task
Duration
Visual inspection
monthly
Check calibration
monthly
(depending on the ambient conditions)
Inspection
six months (counter)
Seal change
every 2 years (counter)
Change wiper and reset counter
as per counter (20000 cycles)
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