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

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12 InPro 6800 Series O
3

Product description

3.1

General information

The sensor InPro 6800 with integrated temperature
probe is used for oxygen meas ure ment.
The sensor is sterilizable and autoclavable and
compatible with CIP (cleaning in place).
InPro 6800 sensors with ISM
and Measure as well as enhanced diagnostics
features.
ISM sensors are available with K8S (fully digital) or VP
connector.
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/refer-
ence electrode (anode), and an oxygen permeable
mem brane 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 ) in the sample medium.
2
Please refer to Section 10 "Theory of the polarogra phic
sensor" for further information.
3.3

Scope of delivery

Each sensor is supplied fully assembled and factory-
tested for correct function together with:
– a quality control certificate
– inspection certificates 3.1 B
(complying with EN 10204.3/1 B)
See electrolyte order details at section „Spare Parts",
9.3.
InPro 6800
52 200 953
Sensor 12/25 mm
2
® functionality offer Plug
© 02 / 17 Mettler-Toledo GmbH
Printed in Switzerland