Installation In Explosion Risk Area - ABB SensyTemp TSP Instrucciones Para La Puesta En Funcionamiento

Electrical connection
4.2.3

Installation in explosion risk area

The installation of the temperature sensor can be performed in most varying industrial locations.
Plants requiring explosion protection (Ex plants), are divided into zones and the most varying of
instrumentation is accordingly necessary. The explosion-relevant information according to
chapter "Explosion protection-relevant information" in the operating instructions must be
complied with.
The temperature sensor must be instrumented by the user in accordance with the valid Ex
norms (explosion-protection). The electrical connection values must be complied with according
to the associated EC prototype test certificate.
4.2.3.1 Intrinsic safety:
Only one measurement circuit may be connected for the protection type EEx i for double
measurement elements (e.g. 2 x Pt100). ABB transmitters are internally switched so that 2
measurement elements may also be connected since both elements are integrated into the
same EEx I sensor circuit. The maximum number of wires in the plastic-sheathed cable is
limited to 6.
Only certified transmitters with the maximum values specified in the instruction manual may be
connected to the temperature sensors. If two transmitters are used for two intrinsically safe
circuits, the sum of the values may not exceed the maximum values specified in the instruction
manual. For the Zone 0 design, only one intrinsically safe sensor measurement circuit may be
used.
The temperature sensor must have appropriate input protection circuits available in order to
eliminate a hazard (spark formation). An interconnection inspection must be performed. For
proof of the intrinsic safety, the electrical limit values are to be used as the basis for the
prototype test certificates of the apparatuses (devices), including capacitance and inductivity
values of the wires.
Fig. 8
A Temperature sensor
B Sensor connection wires
For use in Zone 0, the transmitter must have an EEx ia (category 1G) design.
16 - EN
II 1 G EEx ia IIC T6 ... T1, Zone 0, 1, 2
ATEX
Ex area Zone 0, 1, 2
SensyTemp TSP
Secure area
C Housing
D Transmitter EEx ia/ib
CI/TSP-X1