Vega VEGAFLEX 81 Operating Instructions Manual

Also see for VEGAFLEX 81: Mounting instructions Operating instructions Quick setup guide Operating instructions Operating instructions

Vega VEGAFLEX 81 Operating Instructions Manual Manual pdf 59 page image

599 Diagnostics and servicingVEGAFLEX 81 • Four-wire 4 … 20 mA/HART42280-EN-190131Measurement error during emptyingFault description Cause Rectification7. Measured value remainsunchanged in the closerange during emptyingLeveltime0• False signal larger than the level echo• Level echo too small • Eliminate false signals in the closerange• Remove contamination on the probe.After having removed the source of thefalse signals, the false signal suppres-sion must be deleted.• Carry out a new false signal suppres-sion8. Measured value remainsreproducible in one positionduring emptyingLeveltime0• Stored false signals in this position arelarger than the level echo • Delete false signal suppression• Carry out a new false signal suppres-sionDepending on the reason for the fault and the measures taken, thesteps described in chapter "Setup" must be carried out again or mustbe checked for plausibility and completeness.Should these measures not be successful, please call in urgent casesthe VEGA service hotline under the phone no. +49 1805 858550.The hotline is also available outside normal working hours, sevendays a week around the clock.Since we offer this service worldwide, the support is provided inEnglish. The service itself is free of charge, the only costs involved arethe normal call charges.9.5 Exchanging the electronics moduleIf the electronics module is defective, it can be replaced by the user.In Ex applications, only instruments and electronics modules with ap-propriate Ex approval may be used.If there is no electronics module available on site, the electronicsmodule can be ordered through the agency serving you. The electron-ics modules are adapted to the respective sensor and differ in signaloutput or voltage supply.The new electronics module must be loaded with the default settingsof the sensor. These are the options:• In the factory• Or on site by the userIn both cases, the serial number of the sensor is needed. The serialnumbers are stated on the type label of the instrument, on the insideof the housing as well as on the delivery note.When loading on site, the order data must first be downloaded fromthe Internet (see operating instructions "Electronics module").Reaction after fault recti-fication24 hour service hotline

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