WIKA T32.xS - Handbuch (Seite 42)

GB
11258421.10 08/2014 GB/D
42 WIKA operating instructions model T32.xS
10.3.2 Intrinsically safe supply and signal circuit
(4 ... 20 mA loop; terminal ⊕ und ⊖)
Parameters T32.xS.0IS-x,
T32.xS.0IC-x
T32.xS.0IS-x T32.xS.0NI
Gas hazardous
application
Dust hazardous
application
Gas hazardous
application
Terminals + / - + / - + / -
Voltage Ui DC 30 V DC 30 V 40 V
Strength of current Ii 130 mA 130 mA 23 mA *)
Power Pi 800 mW 750/650/550 mW 1) 1 W
Effective internal
capacitance Ci
7.8 nF 7.8 nF 7.8 nF
Effective internal
inductance Li
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.
1) With reference to ambient temperature; see table “Temperature class”.
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.xS.0IS and 40 V for T32.xS.0NI.
■ The sum of the effective capacitances and inductances must not
exceed the maximum permissible value according to the required
gas 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