Electricity and Control May 2020

COVER ARTICLE

FEATURES: · Control systems+ automation · Drives,motors+ switchgear · Sensors+ switches · Plantmaintenance, test+measurement

Developments in Coriolis mass flowmeters

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ECMay 2020 cover.indd 1

5/4/2020 11:30:28AM

L eading supplier of industrial process measurement, KROHNE, has developed its OPTIMASS series to conform to IEC 61508. This includes improvements in the devices’ diagnostics, verification and functional safety. Now available with Bluetooth ® connectivity, the upgraded version of the MFC400 VE54 ER2.1.x converter is fully developed for safety applications according to the latest IEC 61508:2010 standard. A comprehensive safety concept with proven diagnostic coverage of >96% as well as internal diagnostic test intervals of less than one minute has been developed. This allows the OPTIMASS 6400 to be used in SIL 3 applications or in continuous demand mode, the highest specified level of operation. For added security a hardware switch is incorporated to enable or disable the Bluetooth capability. Bluetooth connectivity provides for wireless on-site commissioning, device parameterisation and diagnostics, as well as validating measured values and settings or starting diagnostic functions that check the device has been installed correctly. A mobile app is also available for wireless device commissioning, diagnostics, verification and monitoring. Some of the features include performance of zero and density calibration, backup/restore settings, NE107 configuration and mapping of events to NE107 status. The ‘OPTICHECK Flow Mobile’ app is available, free of charge, from the App Store and can be used in simulation mode so customers can try it before receiving the flowmeter. Enhanced online diagnostics Enhanced diagnostic coverage of >96% is achieved by using such measurements as continuous signal monitoring, redundant references, entrained gas detection, fault detection and calibration. All measurable parameters, electronic components such as CPUs, memory and internal bus connections, as well as all sensors are monitored continuously during operation. Test simulations can also be run and the simulation measurements recorded as an output. The diagnostic information is displayed in accordance with NAMUR standard NE107 and, to facilitate identification of the problem source, all messages are sorted into status groups: sensor, configuration, electronics and process. Colour coded display and user interface The colour coded display and user interface allow for diagnostics and status messages to be shown via display,

current and/or status output, HART ® or bus interface. The backlight colour indicates device status according to NE107: grey indicating ‘operational’, blue: ‘maintenance required’, yellow: ‘out of specification’, or red: ‘failed’. Functional safety Additional novel technologies and features have been implemented to enable maximum versatility and the highest safety standards. These include the comprehensive authentication concept, configuration wizard for safe parameterisation, enhanced online diagnostics, certified partial proof test concept, and redundant storage of all device configuration data. The Toolbox data logger enables the user to understand and analyse the process conditions. Providing on- and off-line data logging, all measurement and diagnostic values can be recorded and analysed using the free of charge software. OPTICHECK, the KROHNE service tool for in-situ verification of field devices, is an essential service tool to ensure that process measuring devices are performing according to specification. OPTICHECK can carry out rapid troubleshooting with a quick scan, or a full verification. This supports reduced downtime and increased safety for operators and plant. A single OPTICHECK device can be used for all KROHNE meters in the plant without additional licensing.

The OPTIMASS series of flowmeters developed to deliver improved safety and functionality includes enhanced online diagnostics covering a range of measurements.

For more information contact Deon Rampathi at KROHNE Mobile: +27 (0)82 900 7360 or visit: www.krohne.com

Electricity + Control MAY 2020

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