Precision Digital PD663 - Manual (Page 21)

PD663 Loop-Powered Meter Instruction Manual
21
Scaling the Meter (SCL)
The 4-20 mA input can be scaled to display the process in engineering units.
A signal source is not needed to scale the meter; simply program the inputs and
corresponding display values.
If using linear signal input conditioning, enter the number of scale points (2-32),
followed by the input values and display values. If using square root signal input
conditioning, the number of points input menu will not be present.
Number of Points (npt)
Set the number of linearization points used in the Scale menu. 2 to 32 points may
be used. The Scale menu is entered after entering the number of points
For instructions on how to program numeric values see
Setting Numeric Values
, page 18.
Minimum Input Span
The minimum input span is the minimum difference between input 1 and input 2
signals required to complete the calibration or scaling of the meter. The minimum
span is 0.40 mA.
If the minimum span is not maintained, the meter reverts to input 2, allowing the
appropriate input signals to be applied.
d1
Press Enter to
Accept Setting
in2
Scale
Input 2
in1
Set Input 1
Value
SCL ENTER
0 4.00
Set Display 1
Value
Press Up to
Set Digit Value
Press Right to
Select Next Digit
Press Menu to
Exit at any Time
0 00.0
MENU
npt
0 0 2
Number of Points menu
not displayed for square
root input conditioning.
Set Number of
Scale Points