参数资料
型号: 7525
厂商: Toshiba Corporation
英文描述: X-ray Thickness Gage
中文描述: X射线测厚仪
文件页数: 8/14页
文件大小: 204K
代理商: 7525
No. EJD-069
8
Profile Measurement Specifications
1.
Measurement Mode
Item
Scanning Pattern
Standard Specifications
Full-width profile
scanning
WS
DS
In this mode the carriage is made to scan in a strip
width direction by a start profile measurement
command, thereby measuring the whole width profile.
The speed of the carriage is 30mm/s on both edges,
and 100mm/s at the center.
Edge profile
scanning
WS
DS
In this mode the carriage is made to scan in a strip
width direction by a start profile measurement
command, thereby measuring the edge profile.
WS (or DS) edge distance is set beforehand fromthe
customer's computer.
Center
measurement
WS
DS
This mode measures the center of the strip
continuously in a longitudinal direction.
It is used as backup for AGC thickness gages (center
measurement).
2.
Data Processing
The profile data processing shown below is carried out, and it is displayed on the operation-PC.
’’
’’
’’
’’
’’
Figure 4 Section in Strip Width Direction
1)
Crown Value
Crown value, WS crown value, DS crown value are calculated
from the measurements of center plate thickness, WS side
specified measurement points and DS side specified
measurement points.
Crown values are calculated as follows:
a)
Crown value: chi = hc- (hi' + hi'')/2
b)
WS crown value: chi' = hc-hi'
c)
DS crown value: chi' = hc-hi''
2)
Wedge Value
Wedge value is calculated from the measured thickness at WS
side specified measurement points and DS side specified
measurement points.
The formula for calculation is shown below.
Whi = hi''
hi'
Line flow direction
Edge distance
Line center
Note:
a. Edge distance settings i', i'', and j', j'' are the same.
b. i can be set from 5 to 50mm
(i can be set at 5 locations)
c. j can be set from 50 to 100mm
(edge drop standard)
d. i < j (in these specifications the initial settings are i
= 25mm, j = 75mm.)
3)
Edge Drop Amount
Edge drop amount is calculated
from the measured width between
two points specified on the WS side
and DS side.
Calculations are made as follows.
a)
WS edge drop amount:
eh' = hj'
hi'
b)
DS edge drop amount:
eh'' = hj''
hi''
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