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Set Up and Calibration Procedures
Input Set Up Group
42 HercuLine™ 2000 Series Actuator - Installation, Operation and Maintenance Manual Revision 7
7/08
Equal Percentage Valve Characteristic
Table 11 contains values that approximate an equal percentage valve characteristic in the actuator. When
the EQUL custom characterization type is selected, the values in
Table 11 are automatically loaded into the
actuator configuration to produce the characteristic as presented in the graph. The Xn VAL is the input
value as a percentage of range and Yn VAL is the characterized output (actuator shaft position) as a
percentage of range.
Table 11 Equal Percentage Valve Characteristics
Order
Xn VAL
% of
Range
Yn Val
% of
Range
Equal Percentage Valve Characterization
0 0 0
1 5 0.8
2 10 2.1
3 15 3.2
4 20 4.9
5 25 6.5
6 30 8.4
7 35 10.7
8 40 13.2
9 45 15.7
10 50 18.7
11 55 22.6
12 60 27.2
13 65 33.4
14 70 40
15 75 46
16 80 53.8
17 85 63.2
18 90 73.7
19 95 86.2
20 100 100
10 20 30 40 50 60 70 80 90 100
Xn VAL - Actual Input
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Y
n
V
A
L
-
C
h
a
r
a
c
t
e
r
i
z
e
d
O
u
t
p
u
t