Wika T12 Manual do Utilizador descarregar pdf (Página 31)

3211517.0707/2010GB/D

WIKAoperatinginstructionstemperaturetransmitterT12 31

Followinghaveanoutwardeectattheconnectionterminals⊕and

⊖ofthetransmitter:

 eectiveinternalcapacity C

=25nF

 eectiveinternalinductivity L

=650µH

Sensor connection (terminal 1 to 4)

Theconnectedsensormustnotwarmupinadmissablyaccordingto

thetemperatureclassoftherespectivehazardousareaforthefollow-

ingvaluesforvoltage,currentandpower.

ModelT12.x0.xx9

 II3GExnL

 II3GExnA

 II3GExic

eectivevaluesduringoperation

 U

 =DC5V

 I

 =0.25mA

Thesumofthevaluesoftheconnectedsensorandtheconnection

linemustnotexceedthefollowingvaluesforthemaximumpermissib-

lecapacityandinductivity:

ModelT12.xx.xx2

 II1GEExiaGroupe IIB

sensor

+C

line

 <C

 C

=11µF

sensor

+L

line

 <L

 L

=8.6mH

ModelT12.xx.xx2

 II1GEExiaGroupe IIC

sensor

+C

line

 <C

 C

=1.5µF

sensor

+L

line

 <L

 L

=8.6mH

ModelT12.x0.xx9

 II3GExicGroupe IIC

sensor

+C

line

 <C

 C

=1000µF

sensor

+L

line

 <L

 L

=1000mH

ConnectedthermocouplesormV-Sensorsmustnotexceedfollowing

values:

 voltage Ui= DC1.2V

 eectiveinternalcapacity Ci= negligable

 eectiveinternalinductivity Li= negligable

8. Notes for mounting and operating in ...

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