7525 데이터 시트보기 (PDF) - Toshiba

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7525

X-ray Thickness Gage

Toshiba 

Profile Measurement Specifications

1. Measurement Mode

Item

Full-width profile

scanning

Scanning Pattern

WS

←ラLイinンe 流floれw方d向irection

DS

Edge profile

scanning

WS

Edgeエdッisジta距n離ce

DS

Center

WS

measurement

DS

Standard Specifications

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.

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 from the

customer's computer.

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.

he’ hi’ hj’

i’

j’

WS

Line center

hc

hj’’ hi’’

he’’

i’’

j’’

DS

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.)

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'

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''

No. EJD-069

8

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