Product Description; General Information; Principle; Sensor Identification - Mettler Toledo InPro 7250 Serie Bedienungsanleitung

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3

Product description

3.1

General information

The conductivity sensors InPro 7250 Series with inte-
grated temperature sensor are intended to be used to
measure conductivity and concentrations of liquids. The
sensor is designed for the measurement of medium and
high conductivity values.
3.2

Principle

The sensors InPro 7250 Series measure an induced
current in a loop of solution.
Two toroidally wound coils are encapsulated in close
proximity within the sensor which is immersed in the
solution. An AC signal, applied to one toroidal coil,
in duces a current in the second coil which is directly
proportional to the conductance of the solution.
3.3

Sensor identification

Type designation
A sensor can be identified by the article number and the
model name on the label located on the cable.
InPro 7250 xx/yy/zz
xx:
yy:
zz:
Serial number
The serial number is located on the end of the mounting
thread.
Sensor certificate number
The labels located on the sensor cable provide the
information about the sensor certifications.
*PFA: Perfluoralkoxy-Copolymer
InPro 7250 Series
Printed in Switzerland
Type of sensor
ST = Sensor for temperature up to 100 °C
(212 °F), without Ex approval
HT = Sensor for temperature up to 180 °C,
(356 °F) with Ex approval
PFA = Sensor in PFA* for Temperatures up to
125°C (257°F)
Type of the integrated temperature sensor
Cable length
InPro 7250 Series
© 10 / 22 METTLER TOLEDO
52 002 799 H