Annex A
Page A - 24
HA243820
Issue 5 Mar 98
MODEL 346 INSTALLATION AND OPERATION MANUAL
A13.0 DERIVED VARIABLE CONFIGURATION
DISPLAY
SCROLLABLE VALUES
DESCRIPTION OF PARAMETER OR FUNCTION
Function
Off
Used to turn a DV function off.
Add
Add input 1 to input 2.
Subtract
Subtract input 1 from input 2.
Divide
Divide input 1 by input 2
Multiply
Multiply input 1 by input 2
Lin. slope
Input 2 times input 1 plus input 3 (i.e. ax + b).
High select
Output is the higher of input 1 and input 2
Low select
Output is the lower of input 1 and input 2
High peak
Output is the highest value reached since last reset.
Low peak
Output is the lowest value reached since last reset.
Average
Input 1 is sampled every (input 2) seconds and added to the total so
far.
Polynomial
Output = Input 2 + (input 3 x input 1) + (input 4 x input 1
2
) +
(input 5 x input 1
3
). (I.E. Y = A + BX + CX
2
+ DX
3
)
Log 10
Output = input 2 x log
10
of input 1
Power 10
Output = input 2 x 10
input 1
Flow, Sq.Rt
See section 5.6
Flow, Linr.
See section 5.6
F
value
See section 5.6
RH
See section 5.6
ZrO
2
Sensor
See section 5.6
Input N
Constant
Enter a constant value for input N
Channel 1 to 6
Enter the number of a measuring channel for input N
DV 1 to 9
Enter the number of a derived variable for input N
Const. N
None
Enter mantissa and exponent values for any constant.
This display appears only if one of the inputs has been defined as
'constant'.
Descript.
Text entry
The up, down and side arrow keys are used to enter a string to be
used as the derived variable descriptor.
Units
Text entry
The up, down and side arrow keys are used to enter a string to be
used as the derived variable units.
Dec. Point
None
the up and down arrow keys are used to move the decimal point posi-
tion for the channel display, left and right respectively, between 'X.XXXX'
and 'XXXXX.'.
Table A13.0 Derived variable configuration parameters
