Through-beam Sensor Heads: FUN Mode Functions Section 3-8
86
Displaying the Width of the Sensing Object: One-point Scaling B
The width of the sensing object can be measured by using two-sensor
operation and one-point scaling, and inverting the display values.
First, perform the two-sensor operation A+B to display the sum of the mea-
sured values for the two Sensor Heads.
Refer to 3-8-7 Two-sensor Operation.
Second, set the actual sensing object and set the values to be displayed in
scaling mode.
When selecting the incident level display (L) for auto-scaling, enable invert-
ing display values for the scaling mode so that smaller values are dis-
played when larger intercepted beam widths are measured at the Sensor
Head (i.e., when thinner intercepted beam widths are measured).
When the widths of two sensing objects are known, two-point scaling can
also be used.
Example: One-point Scaling B
Sensor Head
Emitter
Sensor Head
Emitter
1CH
2CH
First, connect two Amplifier Units
to perform the A + B operation.
Sensing object
A
Width
B
1CH
2CH
Calculating
Unit
A + B
Sensor Head
Receiver
1CH
Sensor Head
Receiver
2CH
Current measured value A
+ Measured value B = 5 mm
Sensing object width = 50 mm
: Scaling value input
5 mm is displayed as 50 mm and
the display values are inverted.
4.0
5.0
6.0
4.0
5.0
6.0
51.0
50.0
49.0
Measured value = Display value
Measured value
Display value
All display values are offset
and inverted.
Z157-E1-01C.book Page 86 Thursday, August 31, 2006 5:13 PM
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