Description of
parameters
(continuation)
Parameter
Description
High Sensor
Trim
1)
(V7H5)
Enter the upper point of the sensor characteristic curve for recalibration.
Use this parameter to assign a new value to a reference pressure applied to the
device. The applied pressure and the value entered for "High Sensor Trim" are
equivalent to the upper point of the sensor characteristic curve. Refer to Chapter 8.4
"Recalibration".
Factory Setting: "High Sensor Limit" (V7H7)
Low Sensor
Limit
(V7H6)
Indicates the lower sensor limit.
High
Sensor Limit
(V7H7)
Indicates the upper sensor limit.
Sensor Pressure
(V7H8)
Indicates the current pressure applied.
Temperature Unit
(V7H9)
Selects a temperature unit. Options: °C, K,°F.
When you select a new temperature unit, all temperature-specific parameters (V2H6,
V2H7, V2H8) are converted and the new temperature unit is displayed.
Factory Setting: °C
Max. Alarm Current
(V9H4)
Default for current value for parameter "Alarm mode" (V0H8) = Max. alarm
The current value is adjustable from 21 mA to 22.5 mA. Refer to Chapter 5.1 or 6.4,
Section "Alarm mode".
Factory Setting: 22 mA
Zero
Correction
1)
(V9H5)
Use this parameter to carry out a calibration (zero correction) for the values
indicated on the on-site display ("Measured Value" (V0H0)) and for the signal current
at the same time.
For zero correction, a pressure applied to the device is assigned a new value using
this parameter. The sensor characteristic curve is shifted by this value and the
parameters "Low Sensor Trim" (V7H4) and "High Sensor Trim" (V7H5) are
recalculated. Refer to Chapter 5.1, Section "Zero Correction".
Factory Setting: 0.0
Zero Correction
Value
(V9H6)
Indicates the value by which the sensor characteristic curve was shifted for a zero
correction. Refer to parameter description "Zero Correction" (V9H5) and Chapter 5.1,
Section "Zero Correction".
Factory Setting: 0.0
Unbiased
Pressure
(V9H7)
This parameter indicates the actual damped pressure without any bias correction.
Refer to the parameter description "Set Bias Pressure" (V0H5).
Biased
Pressure
(V9H8)
This parameter indicates the actual damped pressure with bias correction. Refer to
the parameter description "Set Bias Pressure" (V0H5).
Calculation: "Biased Pressure" (V9H8) =
"Unbiased Pressure" (V9H7) – "Set Bias Pressure" (V0H5)
In "Pressure" operation mode, this parameter and the parameter "Measured Value"
(V0H0) indicate the same value.
Security Locking
(V9H9)
Enter a code to lock or unlock the operation matrix and on-site operating unit.
Lock operation:
– Using the parameter "Security Locking": enter a number
≠
130,
– using on-site operation: press the +Z und –S keys once simultaneously.
Unlock operation:
– Using the parameter "Security Locking": enter the number 130,
– using on-site operation: press the –Z and +S keys once simultaneously.
The matrix field V9H9 is only editable if operation was not locked previously using
the on-site keys. Refer to Chapters 5.2 or 6.5.
Set Tag
Number
(VAH0)
Enter a text describing the measuring point.
(up to 8 characters, uppercase letters and numerals)
Set User Text
(VAH1)
Enter a text as additional information.
(up to 8 characters, uppercase letters and numerals)
1) The electronics check the input values for these parameters for compliance with editing limits,
refer to Chapter 7.4.
Cerabar S
10 Operating Matrix
Hauser
65
Содержание Cerabar S PMC 731
Страница 6: ...6 Endress Hauser...
