Endress + Hauser Australia have launched the RN221N combined active barrier and power supply. The SIL2 rated barrier provides galvanic isolation for the 4...20mA measured signal and is suitable for use in hazardous areas. The RN221N combined active barrier and power supply can be powered by 20...250V AC/DC, reducing the need for different versions across the plant.
The front-mounted HART communication sockets of the RN221N combined active barrier and power supply makes it simple to obtain information or reprogramme the instrument without removing it or disconnecting the wires.
Using a conveniently positioned DIP switch, HART diagnosis can be selected. This option provides three possibilities that include:
- Monitoring the 4...20mA signal for compliance with NAMUR NE43.
- Evaluation of the HART status byte to alarm when the connected device is in error mode.
- Checking the Endress + Hauser – specific diagnostic command for early warning of changed process conditions with Endress + Hauser devices.
Featuring a 22.5mm (Preline) width and compact DIN rail mount, the RN221N combined active barrier and power supply has a small form factor making installation simple.
In many process plants, the potential for fire or explosion exists because of gases, dust, or easily ignitable fibres or filings in the vessel or area that is being monitored. The RN221N combined active barrier and power supply is offered with an IEC Ex ia rating, which indicates that its electrical energy is restricted to a level below that can cause ignition by either sparking or heating effects, making it suitable for use in hazardous areas.
With its inherent safety features and compact form factor, Endress + Hauser’s RN221N combined active barrier and power supply is a core component of an intrinsically safe solution for process plants.