Yokogawa ZR802S explosion-proof converter for oxygen detection

Yokogawa has announced that it has developed the ZR802S explosion-proof converter as part of its OpreX Analyzers range. The ZR802S converter supports the IECEx, FM, ATEX, CSA, China Ex, Korea Ex, India Ex and Taiwan Ex explosion-proof standards. It is intended for use with the ZR22S explosion-proof zirconia oxygen detector, an existing Yokogawa device with a durable zirconia sensor that is dust-resistant and easy to install and replace. Together, the ZR802S converter and the ZR22S detector comprise a complete oxygen analyser system.

Yokogawa has also introduced remote monitoring and other capabilities that reduce the time and effort required for maintenance operations and increase uptime. The ZR802S converter features a self-assessment function that provides early detection of deterioration in a zirconia oxygen detector, a data logging function that records essential maintenance information, and support for a number of key communication protocols.

The automatic transmission of sensor resistance value at regular intervals, enables replacement timing to be determined without onsite inspection, while the data logging function reduces maintenance time and downtime in the event of a fault.

The ZR802S converter is said to be the only device in the zirconia oxygen analyser market that supports all three of communication protocols: HART7 for analog output, and Modbus TCP and Modbus RTU for digital communications. It also complies with the NAMUR NE43 guideline for the issuance of signals to indicate a sensor fault and the NAMUR NE107 guideline for onsite instrument self-assessment functions.