Many process facilities need 4-20mA signals from field transmitters and analyzers to be shared with their BPCS (Basic Process Control System) and alternate monitoring systems or backup PLCs. But wiring these three elements in series breaks loop integrity and can cause problems when the secondary or backup system fails or is disconnected. Using area isolation, also known as signal splitting, by connecting the secondary system on the secondary side of the isolator, failure of this loop does not impact the primary loop to the BPCS. They can connect these secondary systems, such as a backup PLC, and ensure that if it fails or is removed, the primary host or control system will continue to receive the uninterrupted process signal.
By using a narrow isolator you can double the isolator count in the same space. This is ideal for utilizing existing field mounted cabinets. When the cabinet needs to be located in an area with extreme ambient temperatures and the location is a hazardous area where climate control of the cabinet is problematic, a narrow isolator with necessary approvals that can withstand the extreme environment is needed.
The narrow 15mm ECT-DIN signal isolator and converter with 4-20mA, 1-5V and 0-10V inputs and 4-20mA output allows more isolators to fit in cabinets and field enclosures where installation space is a premium. Being UL Approved for General and Hazardous areas, and having the same RFI/EMI protection and -40°C to 85°C operating temperature range as the rest of the ECT family of isolators, this narrow and rugged isolator can be installed in hazardous locations and does not require installation in cooled or climate controlled environments making it perfect for more extreme locations.