10 Group PULSE/FREQUENCY OUTPUT Device Functions Proline Promass 80
30 Endress+Hauser
VALUE F LOW
! Note!
This function is not available unless the DENSITY, REFERENCE DENSITY or
TEMPERATURE option was selected in the ASSIGN FREQUENCY function.
Use this function to assign a value to the start value frequency (0 Hz),
(see “Setting the span by means of the f-min. and f-max. value” on Page 30).
User input:
5-digit floating-point number (with sign for the TEMPERATURE measured variable)
Factory setting:
0.5 [kg/l] or –50 [°C]
VALUE F HIGH Use this function to assign a value to the END VALUE FREQ.,
(see “Setting the span by means of the f-min. and f-max. value” on Page 30).
User input:
5-digit floating-point number (with sign for the MASS FLOW, VOLUME FLOW,
CORRECTED VOLUME FLOW and TEMPERATURE measured variables)
Factory setting:
Depends on nominal diameter [kg/h] or 2 [kg/l] or 200 [°C]
Setting the span by means of
the f-min. and f-max. value
The span for the measured variable selected in the ASSIGN FREQUENCY function is
specified via the VALUE F LOW and VALUE F HIGH functions.
The span is defined differently, depending on the measured variable selected:
MASS FLOW, VOLUME FLOW and CORRECTED VOLUME FLOW
• The VALUE F LOW function is not available; the value for the zero flow
(0 kg/h or 0m
3
/h) is assigned to the start value frequency.
• The flow value for the end value frequency is defined in the VALUE F HIGH function,
(input range –99999 to +99999). The appropriate unit is taken from the UNIT MASS
FLOW, UNIT VOLUME FLOW and UNIT CORRECTED VOLUME FLOW function.
Example (for standard measuring mode):
A0001279
m= Flow value at which a frequency of 0 Hz should be output
(preset, cannot be edited).
n= Flow value at which the frequency, defined in the END VALUE FREQ. function,
should be output (entry in VALUE F HIGH function).
(continued on next page)
Function description PULSE/FREQUENCY OUTPUT
Q
125
100
0
Freq.
➀➁
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