Product Description; General Information; Principles Of Co 2 Measurement; Scope Of Delivery - Mettler Toledo InPro5000/12/120 Instructions D'utilisation

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8
3

Product description

3.1

General information

The sensor InPro 5000 with integrated temperature
probe is used for dissolved carbon dioxide measure-
ment.
The sensor has been designed for accurate and precise
measurement at low to medium carbon dioxide partial
pressure.
The sensor is sterilizable and compatible with CIP
(cleaning in place).
The sensor consists of an exchangeable pH electrode
which is built in a steel shaft and fixed with a small
hexagonal screw.
3.2 Principles of CO measurement
2
Here is a short summary of the principle of the
potentiometric measurement of CO
sensor is based (Severinghaus). The InPro 5000 sen-
sor employs a gas permeable silicone membrane
which is tightly stretched around a special engineered
flat pH membrane. The CO
process diffuses across the membrane until its partial
pressure equilibrates within the electrolyte film in front
of the pH sensitive glass and the bulk of the internal
electrolyte.
The dissolved CO gas reacts with water to form
2
+
bicarbonate and H ions:
CO + H O HCO
2 2 3
+
The formed H ions lead to a pH change of the inner
electrolyte which is measured with the integrated pH
electrode. Thus, the CO
calculated using the pH and the temperature, which is
detected as well.
3.3

Scope of delivery

Each sensor is supplied together with:
– 1 bottle CO -electrolyte 25 ml
2
– 1 quality control certificate
– 1 inspection certificate 3.1
(in accordance with EN 10204.3/3.1)
Membrane body and cap sleeve are not mounted.
The interior body is protected against drying out with
a wetting cap, filled with CO
Please check completeness.
InPro 5000
52 002 465
InPro 5000 CO Sensor 12 mm
2
which this
2
gas from the sample or
2
– +
+ H
partial pressure can be
2
-electrolyte.
2
© 09 / 06 Mettler-Toledo AG
Printed in Switzerland