Summary :

The ZENER BARRIER is an important device for connecting primary instrument with secondary instrument for protecting electronic instrument as an intrinsically safe explosion-proof system. It limit the power enter hazardous area by its inner protection component. So that ensure the intrinsically safe for primary instrument and protect the field device and worker from danger. The device is used for RONGDE sensor to compose a intrinsically wiring. Different zener barrier is connnected with different sensor as followed:
RDAQ-1 zenero barrrier is for RDLY series pressure transmiter, RDAQ-2 zener barrier and RDAQ-5 zener barrier is for WzPK temperature sensor and some of RDHL series floater level sensor, RDAQ-3 is for RDKR-1 hydrocarbon gas detection transmitter, RDAQ-4 zener barrier is for RDHL floater level sensor which is with RS485 signal.

Technical Spec. :

● Special circuit protection, good quality
● Strong anti-jamming
● Max Allowance voltage: 250VAC/DC
● Ex marking: Exia lI C
● Little electrical leak, high accuracy, non-drift