Vega VEGAPULS 69 Operating Instructions Manual

Also see for VEGAPULS 69: Operating instructions Mounting instructions Product information Quick setup guide Operating instructions

Contents

569 Diagnosis, asset management and serviceVEGAPULS 69 • Foundation Fieldbus47251-EN-1608159 Diagnosis, asset management and service9.1 MaintenanceIf the instrument is used correctly, no maintenance is required innormal operation.In some applications, buildup on the antenna system can influencethe measuring result. Depending on the sensor and application, takemeasures to avoid heavy soiling of the antenna system. If necessary,clean the antenna system in certain intervals.9.2 Measured value and event memoryThe instrument has several memories which are available fordiagnostic purposes. The data remain there even in case of voltageinterruption.Up to 100,000 measured values can be stored in the sensor in a ringmemory. Each entry contains date/time as well as the respectivemeasured value. Storable values are for example:• Distance• Filling height• Percentage value• Lin. percent• Scaled• Current value• Meas. certainty• Electronics temperatureWhen the instrument is shipped, the measured value memory isactive and stores distance, measurement certainty and electronicstemperature every 3 minutes.The requested values and recording conditions are set via a PC withPACTware/DTM or the control system with EDD. Data are thus readout and also reset.Up to 500 events are automatically stored with a time stamp in thesensor (non-deletable). Each entry contains date/time, event type,event description and value. Event types are for example:• Modification of a parameter• Switch-on and switch-off times• Status messages (according to NE 107)• Error messages (according to NE 107)The data are read out via a PC with PACTware/DTM or the controlsystem with EDD.The echo curves are stored with date and time and the correspondingecho data. The memory is divided into two sections:Echo curve of the setup: This is used as reference echo curve forthe measurement conditions during setup. Changes in the measure-ment conditions during operation or buildup on the sensor can thusbe recognized. The echo curve of the setup is stored via:Measured value memoryEvent memoryEcho curve memory