KEYENCE SK-1000 Series - Manual (Page 12)

12 E SK-1000 IM
5. Area scaling
This function configures the settings related to area scaling. The area scaling
function corrects errors in the measured value due to size differences of
measurement targets by setting a correction value according to the size of the
target.
Refer to the correction table shown below to setting the correction value.
z Area scaling correction table
(1) High-precision mode
(2) Wide-range mode
[How to use the correction table and setting example]
Take a wide-range mode as an example for setting a correction value where the
distance to the target is 100 mm and the size of target is φ400 mm.
In this case, use the correction table for the wide-range mode.
The 100 mm on the vertical axis and 200 mm and -200 mm on the horizontal axis
make two intersecting points, crossing the lines marked with the S symbol, which
indicate a correction value of 1.1. So, input 1.1 into the amplifier unit.
Item Setting range initial value
Area scaling 0.10 to 1.50 1.00
NOTICE
• When the measurement target is larger than the outermost lines
of the correction table:
Example: In wide-range mode, with a distance of 100 mm to the
target, and a target size of φ780 mm, if the target is larger than the
outermost lines indicating the correction value of 1.3, set the
correction value to 1.3.
The same is true when using high-precision mode. If the target is
larger than the outermost lines indicating a correction value of
1.0, set the correction value to 1.0.
5. ScL
HOLD
HI
V kV ALARM
BANK
ZERO SHIFT
TIMING
TEMP %RH
HI LO R.V.
0 1 2 3
LO
GO
Press the S/T buttons and specify the correction value.
(Setting range: 0.10 to 1.50)
0
5
10
15
20
25
30
35
40
45
50
-200 -150 -100 -50 0 50 100 150 200
1.0
0.9
0.8
0.7
0.6
1.0 1.0
0.9 0.9
0.8 0.8 0.7 0.7 0.6 0.6
Measurement area [mm]
D
ist
an
ce
to t
he
tar
g
et
[
m
m
]
60
70
80
90
100
110
120
-450 -350 -250 -150 -50 50 150 250 350 450
1.3
1.2
1.1
1
0.9
0.7
1.3 1.3
1.2 1.2
1.1 1.1
0.9 0.9
0.7 0.7
1 1
Measurement area [mm]
Distan
ce
to
the
ta
rge
t [mm]
60
70
80
90
100
110
120
-450 -350 -250 -150 -50 50 150 250 350 450
1.3
1.2
1.1
1
0.9
0.7
1.3 1.3
1.2 1.2
1.1 1.1
0.9 0.9
0.7 0.7
1 1
Measurement area [mm]
Distan
ce
to
the
ta
rge
t [mm]
Correction
value is 1.1.
The measurement area ranging from
-200 mm to +200 mm covers
φ 400 mm.
60
70
80
90
100
110
120
-450 -350 -250 -150 -50 50 150 250 350 450
1.3
1.2
1.1
1
0.9
0.7
1.3
1.2
1.1
1.3
1.2
1.1
0.9
0.7
1
0.9
0.7
1
Measurement area [mm] D
ista
nc
e t
o th
e
target
[mm]
The measurement area ranging from
-390 mm to +390 mm covers
φ 780 mm.
Correction
value is 1.3.
6. Hold Function
The hold method is set for the judgment value (P.V.).
Functions other than "Auto peak hold", "Auto bottom hold" and "Auto absolute
value hold" require the use of the external input (timing input).
Reference
While the judgment value (P.V.) is held, the hold indicator on the sensor
amplifier lights up.
„ Sample hold
When the timing input is turned ON, the judgment value (P.V.) is held.
z When "Level" is set for "7. Timing input" (page 14)
The judgment value (P.V.) is held only while the timing input is ON.
z When "Edge" is set for "7. Timing input" (page 14)
The judgment value (P.V.) is held in between rising edges of the timing input.
Hold function Description
Default
value
Sample hold When the timing input is turned ON, the judgment
value (P.V.) is held.
"Sample hold" (page 12)
c
Peak hold
The maximum value of the specified period
(sampling period) is held as the judgment value
(P.V.).
"Peak hold" (page 13)
Bottom hold
The minimum value of the specified period
(sampling period) is held as the judgment value
(P.V.).
"Bottom hold" (page 13)
Absolute value hold
Within the specified period (sampling period), the
absolute value of the maximum measured value is
held as the judgment value (P.V.).
"Absolute value hold" (page 13)
Auto peak hold
Until the hold-reset input is turned ON, the
maximum value is held as the judgment value (P.V.).
External input is not necessary.
"Auto peak hold" (page 13)
Auto bottom hold
Until the hold-reset input is turned ON, the minimum
value is held as the judgment value (P.V.).
External input is not necessary.
"Auto bottom hold" (page 13)
Auto absolute value hold
Until the hold-reset input is turned ON, the absolute
value of the maximum measured value is held as
the judgment value (P.V.).
External input is not necessary.
"Auto absolute value hold" (page 14)
6. HLd
HOLD
HI
V kV ALARM
BANK
ZERO SHIFT
TIMING
TEMP %RH
HI LO R.V.
0 1 2 3
LO
GO
[HOLD] ON
S-H
P-H
b-H
A-H
Auto.P
Auto.b
Auto.A
S-H
Display value
Time
Judgment value (P.V.)
Internal measurement value (R.V.)*
1
Timing Input ON
OFF
Display value
Time
Judgment value (P.V.)
Internal measurement value (R.V.)*
2
Timing Input ON
OFF
Power ON or
Reset input *
1 After the power is turned on or reset is input, the judgment value (P.V.) is
[- - - - -] until the timing input is first turned ON.