WIKA T32.1S - Maintenance

GB
11258421.0901/2012GB/D
WIKAoperatinginstructionstemperaturetransmitterT32.xS 41
10.3.2 Intrinsically safe supply and signal circuit
(4 ... 20 mA loop; terminal ⊕ und ⊖)
Parameters Model T32.xx.0IS Model T32.xx.0NI
Gas hazardous
application
Dust hazardous
application
Gas hazardous
application
Terminals +/- +/- +/-
VoltageU
i
DC30V DC30V 40V
StrengthofcurrentI
i
130mA 130mA 23mA*)
PowerP
i
800mW 750/650/550mW 1W
Eectiveinternal
capacitanceC
i
7.8nF 7.8nF 7.8nF
Eectiveinternal
inductanceL
i
100µH 100µH 100µH
*)ThemaximumoperatingcurrentislimitedbytheT32.Themaximumoutputcurrentofthe
associatedenergy-limitedapparatusdoesnothavetobe≤23mA.
Thesupplyandsignalcircuitandtheintrinsicallysafe
sensorcircuitmustbeconsideredasgalvanically
connectedtoeachother.
10.3.3 Connection of the HART
®
modem/HART
®
communicator
(terminal ⊕ and ⊖)
■
Thesumofallvoltagesconnected(supplyplusoutputvalues
oftheHART
®
modemand/orHART
®
Communicator)mustnot
exceed30VforT32.xx.0ISand40VforT32.xx.0NI.
■
Thesumoftheeectivecapacitancesandinductancesmustnot
exceedthemaximumpermissiblevalueaccordingtotherequired
equipmentgroup(IIAuptoIIC).
11. Maintenance
Thetemperaturetransmitterdescribedintheseoperatinginstructions
ismaintenance-free!Theelectronicsarecompletelyencapsulated
andincorporatenocomponentswhichcouldberepairedorreplaced.
Repairsmustonlybecarriedoutbythemanufacturer.
10. Notes for mounting, ... / 11. Maintenance