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TH-1400PC
By equipping personal computer various pinholes are
allowed to judge
Pinhole detector
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Click here for dimensional outline drawing. |
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Click here for detailed catalogue. |
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Overview |
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This pinhole detector optically
detects pinhole appeared on opaque sheet substance
made of such material as aluminum foil, copper foil,
copper sheet, and steel sheet using fluorescent
lamp and optical fiber in good accuracy. |
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Slight ray of fluorescent
lamp light leaked from pinhole of sheet material
is passed through optical
fiber and detected by high sensitive photomultiplier
tube. |
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Pinhole of diameter 20µm
can be detected surely. |
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Such type judgment of various
pinholes as size, density, continuity, and SK detection
are possible. |
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Automatic edge tracing
mechanism is equipped in TH-1400PCA type, therefore
stabled detection is possible even sheet is snaked. |
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Pinhole of diameter 20µm
is surely detected in high speed line of 1,500m/min. |
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Detection sensitivity is
not changed even line speed is changed. |
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Variation of detection
sensitivity in sheet width direction is very small
because pinhole is detected using optical fiber. |
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Dynamic range is very wide,
therefore the device can respond to ten times diameter
variation. |
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Printing out of pinhole
data, saving of the data, and connection with host
computer are possible. |
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Database function is equipped. |
Applications |
Detection signal waveform |
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Pinhole detection
of : |
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Aluminum foil |
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Copper foil |
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Steel sheet |
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Rubber sheet |
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Other various
opaque sheets |
Detection principle |
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Dead zone at edge parts |
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Dead zone is 10mm at both
edges in small snaking sheet. |
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Apply edge mask automatic
tracing mechanism equipped type when snaking is
more than ±5mm. |
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Inspection
accuracy / Objected substance |
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Type |
Opaque sheet
state substance |
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Width |
500 to 1,380mm |
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Thickness |
Less than 1.2mm |
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Driving speed |
Max 1,500m/min |
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Vertical vibration |
Less than ±1mm |
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Snaking |
Within ±2mm |
Ambient
temperature |
0ºC to
+40ºC |
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Line state |
Continuous |
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Inspection area |
Whole area
of sheet excluding
10mm dead zone at both edges |
Inspection
accuracy |
More than
ø20µm pinhole diameter |
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Light
source |
Light projecting
method |
High frequency
lighting method
(20KHz - 30KHz) |
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Light source |
White fluorescent
lamp |
Operation power
source |
Supplied from
inverter |
Connection
method |
Metal plug
socket type |
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Setting distance |
Distance from
objected substance: 40mm |
Operating
temperature |
0ºC to
+40ºC
(Free from due condensation) |
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Receiver |
Light receiving
method |
Optical fiber
light collecting method |
Photoelectric
transducer |
Photomultiplier
tube |
Light receiving
width range |
Various types |
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Setting distance |
Distance from
objected substance: 2mm |
Operating
temperature |
0ºC to
+40ºC
(Free from due condensation) |
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Controller |
Judgment
criteria setting |
Setting of
slice voltage (Judgment criteria) by
digital switch.
Setting range is ten times of standard
pinhole diameter. |
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Synchronizing |
Customer supplied
inspection command (ON period of gA-contacth
or gOpen collector signalh becomes
inspection period.) |
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Display |
· Power
display: LED (amber) · Detection
display: LED (red) · Sheet
breakage display: LED (orange) ·
Inspecting display: LED (green)
· Display of total turning on
time of electricity using hour meter |
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Output |
1. Relay output
(A-contact) · Detection output
(timer output)
ON time: 0.5sec}30% · Detection
dis
2. Electronic buzzer alarm (timer output)
· Operation time: About 1 sec
(with ON and OFF switch) |
Operation
power source |
AC100V±10%
50/60Hz |
Power
consumption |
Approx. 300VA |
Connection
method |
Metal plug
socket and
terminal block type |
Operating
temperature |
0ºC to
+40ºC
(Free from due condensation) |
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Edge
mask automatic tracing system |
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Moving speed |
Less than 4mm/sec |
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Open and close
range |
400 to 1,400mm |
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Setting accuracy |
Within ±1
mm |
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Operation panel |
Control by
sequencer |
Operating
temperature |
0ºC to
+40ºC |
Outline Dimension
(mm) |
800 (W) ×
700 (H) × 250 (D) |
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