Annex
PIOX R721 C Maintenance protocol
109
UMPIOX_R721V1-3EN, 2021-09-01
measured values: one representative measured value for each typical process state at the measuring point (e.g.,
operating point, CIP)
Comparison of the amplitude values
If the amplitude value measured during maintenance is far below the value measured at the start-up, for example, if the
fluid is slightly cloudy, a cleaning of the sapphire optic is recommended.
amplitude value
(maintenance)
≤ 1/20 amplitude value
(start-up)
Check of the zero point (optional)
After the cleaning, we recommend to check the zero point. PIOX R500 is checked using deionized water.
• Select Brix in the menu item Parameters\Fluid\Other fluid\Scale.
default: Brix value = 0
input of offsets:
process
state
physical
quantity
reference
value
(1)
T
fluid
n
D
humidity
[%]
T
dev
ampli-
tude
ampifica-
tion
symme-
try
(1)
determined with (e.g., lab refractometer, type) accuracy:
Notice!
Make sure that the material of the sensor (stainless steel 1.4571) and the gaskets of the sensor (see confirmation of
order) are resistant against the solvent. The solvent also has to be suitable for the fluid.
cleaned with:
operating temperature Brix value deviation
no offset:
offset: Result offset
offset: Scale offset
maintenance completed on: signature:
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