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BHGE
HART
®
Barrier Compliance
The intrinsic safety barrier must be designed to transmit HART
®
signals in a bi-directional way.
Both passive Zener diode barriers and active galvanic isolators can be HART
®
compliant.
Consult manufacturer or refer to documents listed at the end of this instruction manual.
Figure 90 Intrinsically Safe Installation with Zener Barrier and HART
®
Filter
Power
Supply
HART Compliant
Control System
Output Card
HART
Modem
SVI II ESD
ValVue ESD
Barrier
Resistance
Single Channel
Zener Barrier
Hazardous Area
Non-hazardous Area
HART
Filter
GE DPI620
Содержание SVI II ESD
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