14 Group PROCESS PARAMETER Device Functions Proline Promass 80
50 Endress+Hauser
EMPTY PIPE DETECTION
(EPD)
Use this function to activate the empty pipe detection (EPD). With empty measuring
tubes the density of the fluid falls below a specified value (see EPD LOW VALUE
function).
Options:
OFF
ON
Factory setting:
ON
" Caution!
• Select a correspondingly low EPD LOW VALUE so that the difference to the effective
density of the fluid is sufficiently large enough. This ensures that totally empty
measuring tubes and not partially filled ones are detected.
• For gas measurement we strongly recommend to switch off empty pipe detection.
EPD LOW VALUE
! Note!
This function is not available unless the ON setting was selected in the EPD function.
Use this function to set a lower threshold for the measured density value, in order to
detect possible problems in the process indicated by too low density.
User input:
5-digit floating-point number
Factory setting:
0.2000 kg/l
EPD VALUE HIGH
! Note!
This function is not available unless the ON setting was selected in the EPD function.
Use this function to set an upper threshold for the measured density value.
User input:
5-digit floating-point number
Factory setting:
6.0000 kg/l
EPD RESPONSE TIME Use this function to enter the time span for which the criteria for an empty pipe have to
be satisfied without interruption before a notice message or fault message is generated.
User input:
fixed-point number: 1.0...60.0 s
Factory setting:
1.0 s
Function description PROCESS PARAMETER
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