7 Block BASIC FUNCTION Device Functions Proline Promass 83 FOUNDATION Fieldbus
54 Endress+Hauser
7.2.2 Function group EPD PARAMETER
BASIC FUNCTION G
⇒
FOUNDATION FIELDBUS GGA
⇓
PROCESS PARAMETER GIA
⇒
CONFIGURATION 640
⇓
EPD PARAMETER 642
Function description
BASIC FUNCTION → PROCESS PARAMETER → EPD PARAMETER
EMPTY PIPE
DETECTION
(6420)
Use this function to activate the empty pipe detection (EPD). With empty measuring
tubes the density of the fluid falls below the value specified in the function
EPD VALUE LOW.
Options:
OFF
ON
Factory setting:
ON
" Caution!
• Select a correspondingly low EPD response value in the EPD VALUE LOW function
so that the difference to the effective density of the fluid is sufficiently large. This
ensures that totally empty measuring tubes and not partially filled ones are detected.
• For gas measurement, we strongly recommend you switch off empty pipe detection.
EPD VALUE LOW
(6423)
! Note!
This function is not available unless the ON selection was selected in the
EMPTY PIPE DETECTION function.
Use this function to specify a lower threshold value (limit value) for the measured
density as process problems can occur if the density is too low.
User input:
5-digit floating-point number
Factory setting:
0.2000 kg/l
EPD VALUE HIGH
(6424)
! Note!
This function is not available unless the ON selection was selected in the
EMPTY PIPE DETECTION 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
(6425)
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 to 100.0 s
Factory setting:
1.0 s
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