10.5 Description of parameters
Parameter
Description
Measured Value
(V0H0)
This parameter indicates the current value measured. The matrix field V0H0
corresponds to the on-site display. For the "Pressure" operating mode, select a
pressure unit using the parameter "Select Pressure Unit" (V0H9). The measured
value is converted and displayed in the pressure unit you selected.
In the "Level" mode, the measured variable is displayed in "%" as standard. Use the
parameter "Unit after Linearisation" (V3H3) to select a level, volume or weight. This
unit is only for display. The measured variable is not converted to the unit you
selected.
Set 4 mA Value
1)
(V0H1)
Enter a pressure value for the 4 mA calibration value (calibration without reference
pressure).
In on-site operation, this is equivalent to incrementing the value by pressing the +Z
key or decrementing the value by pressing the –Z key.
Factory Setting: 0.0
Set 20 mA Value
1)
(V0H2)
Enter a pressure value for the 20 mA calibration value (calibration without reference
pressure).
In on-site operation, this is equivalent to incrementing the value by pressing the +S
key or decrementing the value by pressing the –S key.
Factory Setting: "High Sensor Limit" (V7H7)
4 mA Value
automatic
1)
(V0H3)
If you confirm this parameter, the current pressure value is set as the 4 mA
calibration value (Lower range-value) (calibration with reference pressure).
The value is displayed in parameter "Set 4 mA Value" (V0H1).
This is equivalent in on-site operation to prZ and –Z once simultaneously.
20 mA Value
automatic
1)
(V0H4)
If you confirm this parameter, the current pressure value is set as the 20 mA
calibration value (Upper range-value) (calibration with reference pressure).
The value is displayed in parameter "Set 20 mA Value" (V0H2).
This is equivalent in on-site operation to prS and –S once simultaneously.
Set Bias Pressure
1)
(V0H5)
If the on-site display indicates process pressure zero not as zero after calibrating the
lower range-value (depending on position), you can correct the display value of the
on-site display to zero (bias pressure) by entering a pressure value. The parameters
"Measured Value" (V0H0), "Set 4 mA Value" (V0H1) and "Set 20 mA Value" (V0H2) are
corrected by the bias pressure.
Factory Setting: 0.0
Bias Pressure
automatic
1)
(V0H6)
If you confirm this parameter, the current pressure value is adopted as bias
pressure. The value is displayed in the parameter "Set Bias Pressure" (V0H5).
This is equivalent in on-site operation to pressing the +Z and +S keys twice
simultaneously. Refer to the parameter description "Set Bias Pressure" (V0H5).
Set Output
Damping
(V0H7)
Damping (integration time) affects the speed at which the output signal and the
value indicated respond to a change in pressure.
Damping is adjustable from 0 to 40 s.
Factory Setting: 0.0
Alarm mode
(V0H8)
(INTENSOR:
Set Output Safety)
In the event of an error, the current value is set to the value selected here.
The bar graph on the on-site display indicates the current.
Options:
– Min. alarm: 3.6 mA
– Value hold: last value is on hold.
– Max. alarm: 21…22.5 mA. The current value for "Max. alarm" is adjustable via the
parameter "Max. alarm current" (V9H4).
Refer to Chapter 5.1 or 6.4, Section "Alarm mode".
Factory Setting: Max. alarm (22.0 mA)
Select
Pressure Unit
(V0H9)
Selects a pressure unit.
When you select a new pressure unit, all pressure-related parameters are converted
and indicated together with the new pressure unit.
Factory Setting: bar
Diagnostic Code
(V2H0)
If the pressure transmitter detects an error or a warning, it generates an error code.
This parameter displays the current error code.
See Chapter 7.1 for a description of error codes.
Last Diagnostic
(V2H1)
Indicates the last error code.
See Chapter 7.1 for a description of error codes.
Factory Setting: 0
1) The electronics check the input value of this parameter for compliance with editing limits,
refer to Chapter 7.4.
10 Operating Matrix
Cerabar S
62
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Summary of Contents for Cerabar S PMC 731
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