ABB FEX300 Operating Instruction page 116

Parameterization
Menu / Parameter
Diagnostics / Diagnosis Control / Empty Pipe Detector
Empty Pipe Detector
Adjust EP
Manual Adjust EP F.
Threshold
Detector EP Value
italics = Parameter can only be viewed at the "Advanced" password level.
1) Parameter / menu only available for FEP500 / FEH500.
116
Value range
On / Off
0 ... 255
100 ... 60000 Hz
Display only
FEX300, FEX500
Description
Activate the "Empty Pipe Detector" function (only for
sizes ≥ DN 10 and without preamplifier).
An entirely full measuring tube is essential for an
accurate measurement. The "Empty Pipe Detector"
function detects an empty measuring pipe.
In the case of an alarm, the current output assumes
the status that was defined in the "Input / Output /
Current Output / Iout at EP Alarm" menu, and the
pulse output is stopped.
Default setting: Off
The Empty Pipe Detector function must be adjusted
according to the conditions on site. The switching
threshold is set during the automatic adjustment.
Start automatic adjustment of the Empty Pipe
Detector function.
Manually adjust the Empty Pipe Detector function.
The value must be modified in such a way that the
frequency for empty pipe detection is close to
2000 Hz.
Important (Notice)
Prior to starting the (manual / automatic)
adjustment, make sure that:
• There is no flow through the flowmeter sensor
(close all valves, shut-off devices, etc.)
• The flowmeter sensor is completely filled with
the fluid to be measured.
Set the switching threshold for empty pipe detection.
The switching threshold is set automatically during
automatic adjustment. The switching threshold can be
changed in order to obtain manual fine adjustment.
Display of the frequency for empty pipe detection. If
the current value exceeds the defined switching
threshold, a message appears on the display and an
alarm is output via the digital output, if configured
accordingly.
OI/FEX300/FEX500-EN