Product Description; GeneralInformation; Principle; SensorIdentification - Mettler Toledo InPro 7250-Serie Bedienungsanleitung

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16 InPro
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Product description

3.1 General information
The conductivity sensors InPro 7250 Series with inte -
grated temperature sensor are intended to be used to
measureconductivityandconcentrationsofliquids.The
sensorisdesignedforthemeasurementofmediumand
highconductivityvalues.
3.2

Principle

The sensors InPro 7250 Series measure an induced
 c urrentinaloopofsolution.
Two toroidally wound coils are encapsulated in close
proximity within the sensor which is immersed in the
 s olution. An AC signal, applied to one toroidal coil,
in d uces a current in the second coil which is directly
 p roportionaltotheconductanceofthesolution.
3.3 Sensor identification
Type designation
Asensorcanbeidentifiedbythearticlenumberandthe
modelnameonthelabellocatedonthecable.
InPro 7250 xx/yy/zz
xx:
(212°F),withoutEXapproval
(356°F)withEXapproval
PFA = SensorinPFA*forTemperaturesupto
125°C(257°F)
yy: typeoftheintegratedtemperaturesensor
zz: cablelength
Serial number
Theserialnumberislocatedontheendofthemounting
thread.
Sensor certificate number
The labels located on the sensor cable provide the
 i nformationaboutthesensorcertifications.
*PFA:Perfluoralkoxy-Copolymer
©01/2016Mettler-ToledoGmbH CH - 8606Greifensee
PrintedinSwitzerland 52002799
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® 7250Series
Type of sensor
ST = Sensorfortemperatureupto100°C
HT = Sensorfortemperatureupto180°C,