Product Description; General Information; Principle; Scope Of Delivery - Mettler Toledo InPro 6800 Serie Instructions D'utilisation

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Product description

3.1

General information

The sensor InPro 6800 with integrated temperature
probe is used for oxygen measurement.
The sensor is sterilizable and autoclavable and
compatible with CIP (cleaning in place).
InPro 6800 sensors with ISM functionality offer Plug
and Measure as well as enhanced diagnostics
features.
3.2

Principle

Here is a short summary of the principle of pola-
rographic measurement on which this sensor is based
(Clark 1961).
a) The Clark polarographic sensor basically consist of
a working electrode (cathode), a counter/reference
electrode (anode), and an oxygen permeable
membrane which separates the electrodes from the
sample medium.
b) The transmitter supplies a constant polarization
voltage to the cathode, needed to reduce oxygen.
c) The oxygen molecules which migrate through the
permeable membrane are reduced at the cathode.
At the same time, oxidation takes place at the
anode and oxidized anode metal (silver) is libe-
rated as silver ions into the electrolyte. The electro-
lyte closes the electric circuit between anode and
cathode (ion conductivity).
d) The current produced by the reactions described
above is measured by the transmitter and is
proportional to the partial pressure of oxygen
(pO
Please refer to Section 10 «Theory of the polarograph-
ic sensor» for further information.
3.3

Scope of delivery

Each sensor is supplied fully assembled and factory-
tested for correct function together with:
– an electrolyte bottle (34 100 2016)
– a quality control certificate
– inspection certificates 3.1 B
(complying with EN 10204.3/1 B)
InPro 6800
52 200 953
InPro 6800 Series O
) in the sample medium.
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Sensor 12/25 mm
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© 10/05 Mettler-Toledo GmbH
Printed in Switzerland