Maintenance; Safety Precautions; Cleaning And Care; Replacing The Membrane And The Electrolyte - Mettler Toledo InPro 6050 Serie Bedienungsanleitung

InPro 6050 Series O
6

Maintenance

When used in water applications, the sensor is de-
signed to require minimal service. However in some
cases it can be necessary to recalibrate the sensor or
to change the electrolyte or the membrane body.
6.1

Safety precautions

a
Warning: the electrolyte has an alkaline pH-value of
13. Contact of the electrolyte with the skin, especially
mucous membrane or eyes, should be avoided. If
such contact occurs, the affected area should be well
rinsed with running water. Get medical attention if ad-
verse signs appear.
As contact with the electrolyte is very likely during the
exchange of electrolyte or membrane body, the use of
protective gloves is recommended.
6.2

Cleaning and care

The sensor can be gently cleaned with soapy water
(or with a mild bleach) and rinsed thoroughly.
Inspect the membrane. If it has cracks or shows
longer response time, then it should be replaced as
follow:
6.3

Replacing the membrane and the electrolyte

Please follow the following instructions to change the
membrane body and the electrolyte:
a) Unscrew the cap sleeve from the shaft and
carefully pull it off the sensor.
b) Pull off the membrane body from the interior
body. If it remains inside the cap sleeve, eject by
pushing it with the flat finger tip. Before electrolyte
is refilled, the membrane body must be removed
from the cap sleeve.
c) Clean the interior body with a soft tissue.
d) Check the O-rings for mechanical defects and
replace if necessary.
e) Half fill the membrane body with O
and make sure it is bubble-free. Air bubbles can
be removed by carefully tipping on the membrane
body.
f) Slowly slip the membrane body over the interior
body while holding the sensor in a vertical posi-
tion.
The excess electrolyte will be displaced and
should be wiped off with a paper tissue.
g) Carefully slip the cap sleeve over the fitted
membrane body and screw it down. The cap slee-
ve must be clean and dry.
h) After each replacement of the electrolyte or of the
membrane, the sensor must be polarized over a
period of 6 hours.
i) When the sensor is polarized and connected to
the transmitter, it is necessary to start by recali-
brating the system.
© 03 / 2023 METTLER TOLEDO
Printed in Switzerland
Sensor
2
electrolyte
2
InPro 6050
52 200 251 D
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