Endress+Hauser Prothermo NMT81 - Electrical Connection; NMT81 (Ex Ia) Intrinsically Safe Connection

Prothermo NMT81 Electrical connection
Endress+Hauser 47
6 Electrical connection
6.1 NMT81 (Ex ia) intrinsically safe connection
NMT81, which uses intrinsically safe HART communication, must be connected to the device's
intrinsically safe terminal. Refer to the intrinsic safety regulations for establishing wiring and
field device layout.
1
2
3
5
6
4
A0042752
 32 NMT81 terminal (ATEX ・ Ex ia)
1 Dummy plug
2 + terminal (see Information)
3 - terminal (see Information)
4 Internal ground terminal for the cable shield
5 External ground terminal
6 Shielded twisted pair wire or steel-armored wire
• Only a metal cable gland may be used. The shielded wire on the HART communication
line must be grounded.
• The plug is also mounted at the side of [6] in the figure above prior to shipping. The
material of plug (aluminum or 316L) varies depending on the type of the transmitter
housing material.