Siemens SITRANS P500, Руководство по эксплуатации, Страница: 93 / 238

Operate
6.2 Parameter description
SITRANS P500 with HART
Operating Instructions, 12/2014, A5E02344528-09
93
Purpose: Setting the start of scale value
Description: This parameter allows the start of scale value for the mass flow scaling to be
set. The value that is set for "2.1.2.1.2 Setting LRV" (Page 84) or "2.1.2.2.2
Set LRV with Pressure" (Page 85) is automatically assigned to this value.
The start of scale value is expressed in the units you selected under "2.1.5.4
Mass Flow Unit" (Page 92).
"2.1.5.6 Mass Flow URV"
Factory setting: 100 kg/s
Adjustment range: Freely selectable numeric value
Purpose: Setting the full scale value
Description: This parameter allows the full scale value for the mass flow scaling to be
set. The value that is set for "2.1.2.1.3 Setting URV" (Page 84) or "2.1.2.2.3
Set URV with Pressure" (Page 85) is automatically assigned to this value.
You can enter the end of scale value in the unit selected under "2.1.5.4
Mass Flow Unit" (Page 92).
"2.1.5.7 Correction Curve Activation"
This parameter allows you to activate the root correction characteristic and enter the root
correction interpolation points.
Factory setting: Off
Adjustment range:
• Off
•
On
Purpose: Activate / deactivate the root correction
Description: This parameter allows you to specify whether a root correction characteristic
should be used.
Only if ""2.1.5.7 correction characteristic " is set to "On" are the following parameters visible.
For the root correction characteristic, enter 11 output values (y-values) as percentage
values. The input values (x-values) should be entered as 11 equidistant percentage values
on the x-axis. The correction characteristic is always defined using 11 pairs of values on the
curve.
Men item Designation
2.1.5.8 Correction value 0
... ...
2.1.5.18 Correction value 10
See also
Correction of the flow characteristic (Page 157)