Endress+Hauser Proline Prowirl 72, Руководство по эксплуатации

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Proline Prowirl 72 11 Description of device functions
E Hauser 91
SWITCH-OFF POINT
!
Note!
This function is not available unless the LIMIT FLOW or LIMIT TOTALIZER option was
selected in the ASSIGN STATUS function.
Use this function to assign a value to the switch-off point (status output drops out). The
value can be greater or less than the switch-on point. Only positive values are permitted.
User input:
5-digit floating-point number
Factory setting:
Depends on nominal diameter, application and country (metric system units,
→
Page 105, or US units,
→
Page 107 )
!
Note!
The appropriate unit is taken from the UNIT FLOW function (see Page 74).
TIME CONSTANT
!
Note!
This function is not available unless the LIMIT FLOW option was selected in the ASSIGN
STATUS function.
Use this function to select a time constant defining how the measuring signal reacts to
severely fluctuating measured variables, either very quickly (low time constant) or with
damping (high time constant).
The purpose of damping, therefore, is to prevent the status output changing state
continuously in response to fluctuations in flow.
User input:
0...100 s
Factory setting:
0 s
!
Note!
The reaction time of the function depends on the time specified in the FLOW DAMPING
function (see Page 99).
ACTUAL STATUS
OUTPUT
!
Note!
This function is not available unless the STATUS option was selected in the OPERATING
MODE function.
The current status of the status output appears on the display.
Display:
NOT CONDUCTIVE
CONDUCTIVE
Function description PULSE/STATUS OUTPUT (status)