Benetech GM130 User Manual

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6). Non-parallel surface
To get a satisfying ultrasonic response, the surface must
have its one measuring side parallel with another, other-
wise will obtain wrong result.
7). Influence of the material temperature
The size & sound velocity of material will change with the
temperature, when the precision is critical, please make
measurement in 2 samples of the material under the same
temperature to determine the proper reading resulting
from the temperature. When taking measurement for st-
eel parts in high temperature, this method may be adop-
ted to obtain the correct reading.
8). High acoustic reduction material
For materials in fiber, poriferous or big granular, acoustic
dispersion will cause the energy attenuation that may
result in abnormal readings(practically the reading less
than the actual thickness), in this case the material is not
suitable for the unit.
9). Reference sample block
For calibration for the gauge, a given thickness or sound
velocity of the material is very import. Calibration needs
at lest one referring standard sample block. This gauge
is provided with a 4.0mm sample block, please check for
calibration operations.
In different material & situation, only one sample block
may not satisfy every calibration. The more similar sample
block, the more exact reading obtained. Ideally, referring
block is a group of different thickness and same material,
by calibrating to the referring block, the effect of variation
of sound velocity will be minimized. To get the most exact
measure, a set of referring block is very important.
When measuring thin material which thickness close to
the minimum limit range of this unit, please use a referring
block to define exact limit of this material. Do not measu-
ring the material that the thickness under the minimum limit.
10). The wear of the transducer will effect the measurement,
when below situation happen, please replace the
transducer:
A. only display one reading when measured different
thickness;
B. reading display without take measurement.
11). Selection of transducer
A
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DOCUMENT NO.: QR-208/A
B C D E
B
C
D E
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SCALE
SIZE
DATENAME
APPROVALS
APP. BY
CUSTOMTER
DRAWN BY
CHECKED BY
1:1
A4
更 改 记 录
次号
1.
2.
3. 12页内容修改 19.11.22
VER.A4
SHEET
OF
PART Number:
1 1
GM130 英文有唛新说明书示意图
日期
更 改 内 容
7160130008
QWY
2017-5-13
SHENZHEN JUMAOYUAN SCIENCE AND TECHNOLOGY CO., LTD.
4.修改 配件 探头 单位 2021-07-09
7160130008 GM130 英文有唛新说明书
材料:105G双铜;
成品尺寸:190*130MM;
公差:+-1.0MM;
页数：24P;
工艺:双面单色印刷,加工:骑马钉
VER-A4

Benetech GM130 Specifications

General

Brand	Benetech
Model	GM130
Category	Measuring Instruments
Language	English