Refineries have the need to share process signals across multiple systems. Steam flow from a process unit, for example, might have to be shared with the powerhouse.
Invariably you will share or split this primary process variable (PV) off to the secondary system through an Isolator. The isolator assures that the primary loop will continue functioning should accidents or maintenance disable the secondary loop. In order to ensure that the secondary area does not have access to the transmitter’s HART signal, choose an isolator such as the Moore Industries ECT-DIN Signal Isolator and Converter. It is loop-powered by the secondary system (PLC) and it blocks the HART digital signal.
Key attributes:
- ECT is a signal splitter whose output follows failed inputs down below 3mA
- HART Blocking
- Superior RFI/EMI and common mode noise rejection
