Ultrasonic flow sensor - Hachflow

Error listErrors may occur for various reasons. The reading on the measurementscreen flashes. All outputs are held when specified in the controllermenu. To show the sensor errors, push the MENU key and selectDiagnostics, [Select Sensor], Error List. A list of possible errors is shownin Table 5.Table 5 Error list for the sensorError Description ResolutionSENSOR MISSINGWarning listThe sensor is missing ordisconnectedExamine the wiring andconnections for thesensor and for themodule.A warning does not affect the operation of menus, relays and outputs. Awarning icon flashes and a message is shown on the bottom of themeasurement screen. To show the sensor warnings, push the MENUkey and select Sensor Diag, [Select Sensor], Warning List. A list ofpossible warnings is shown in Table 6.Table 6 Warning list for the sensorWarning Description ResolutionTOTALIZER FULLTEMP WARNINGThe sensorvolume/totalizer is full.The temperature is out ofscope.Reset the sensorvolume/totalizer.Replace the sensor.ECHO MISSING The echo signal is lost. Option 1—Move thesensor closer to thewater surface.Option 2—Adjust thesensor mounting toproperly aim the sensorat the water surface.Option 3—Replace thesensor.Table 6 Warning list for the sensor (continued)Warning Description ResolutionEXCESS LEVELREPLACE SENSORCAL DUENOT CALIBRATEDCAL IN PROGRESSOUTPUTS ON HOLDEvent listThe excess level is out ofrange.The sensor needs to bereplaced.The sensor calibration isover due.The sensor needs to becalibrated.The calibration wasstarted but notcompleted.During calibration, theoutputs were set to holdfor a selected time.Option 1—Make sure thegauge type is correct.Option 2—Calibrate thesensor.Replace the sensor.Calibrate the sensor.Calibrate the sensor.Return to calibration.The outputs will becomeactive after the selectedtime period.The controller provides one event log for each sensor. The event logstores a variety of events that occur on the devices such as configurationchanges, alarms, warning conditions, etc. A list of possible events isshown in Table 7. The event log can be read out in a CSV format. Forinstructions on downloading the logs, see the controller user manual.EventPOWER ON EVENTCHANGE IN CONFIG - floatCHANGE IN CONFIG - intCHANGE IN CONFIG - textTable 7 Event list for the sensorDescriptionThe power was turned on.The configuration changed-floating numberThe configuration changed-integer numberThe configuration changed-text stringEnglish 17