98
FEP630, FEH630
ELECTROMAGNETIC FLOWMETER | OI/FEP630/FEH630-EN REV. D
… 8 Operation
… Parameter descriptions
Menu / parameter
Description
Diagnostics / ...Diagnosis Control / ...Diagnosis Tfe
Tfe On/Off
Activate the Partial Filling Detection function.
Note
This feature is available if the sensor is equipped with a Partial Filling Detector (optional).
This function is available for sensors from size DN 50 without explosion protection or with explosion protection for
Zone 2 / Div 2. The flow sensor must be installed horizontally with the terminal box pointing upwards. The conductivity of
the measured medium must be in the range of 20 to 20.000 µS/cm.
Start Tfe Adjust
The partial filling detection must be set in accordance with the conditions on-site.
Start the automatic adjustment of the Partial Filling Detection function.
Note
Prior to starting, make sure that:
• There is no flow through the sensor (close valves, shut-off devices etc.).
• The flowmeter sensor is completely filled with the medium to be measured
Manual Tfe Adjust
Manual setting of the Partial Filling Detection function.
Tfe Threshold
Manual fine adjustment of the switching threshold. The switching threshold is set automatically during automatic
adjustment. If the current value should exceed the defined switching threshold, a message will appear on the display and an
alarm will be triggered through the digital output, if appropriately configured.
Actual Tfe Value
Output of the TFE detection value. If the value should exceed the switching threshold, a message will appear on the display
and an alarm will be triggered through the digital output, if appropriately configured.
Diagnostics / ...Diagnosis Control / ...Empty Pipe Detector
Empty Pipe Detector
Activate the ‘Empty Pipe Detector’ function (only for sizes
≥
DN 10).
A completely filled meter tube is essential for an accurate measurement. The ‘Empty Tube Detection’ function detects an
empty meter tube..
In case of an alarm, the current output records the determined status in the menu ‘Input/Output / ...Curr.Out 31/32 / Curr.
at EPD Alarm’ and the pulse output is stopped.
Adjust EP
The empty tube detection function must be set in accordance with the conditions on-site. The switching threshold is set
automatically during automatic adjustment.
Start the automatic adjustment of the Empty Tube Detection function.
Manual Adjust EP F.
Manual set the empty tube detection function.
The value must be adapted such that the frequency for the empty tube detection (Detector EP Value) is almost 2000 Hz..
Note
Before starting the (manual / automatic) adjustment, make sure that:
• There is no flow through the sensor (close valves, shut-off devices etc.).
• The flowmeter sensor is completely filled with the medium to be measured
Threshold
Set the switching threshold for the empty tube detection.
The switching threshold is set automatically during automatic adjustment. The switching threshold can be changed for
manual fine adjustment.
Detector EP Value
Frequency display for empty tube detection. If the current value should exceed the defined switching threshold, a message
will appear on the display and an alarm will be triggered through the digital output, if appropriately configured.
