Benetech GM130 User manual

Version: GM130-EN-03
GM130
MODEL: GM130
Ultrasonic Thickness Gauge
Instruction Manual
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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

Contents
Before use
Operation instructions
Check-up----------------------------------------------(01)
-------------------------------------------(02)
S ----------------------------------------- (03)
Diagram of the unit -----------------------------------(04)
Introduction
pecification
Thickness measurement----------------------------(06)
Sound speed adjustment-----------------------------(07)
Calibration---------------------------------------------(07)
Sound speed measuring-----------------------------(08)
Restoring the default speed value----------------- (08)
Mode switching--------------------------------------- (09)
Data saving-------------------------------------------- (09)
Data reviewing---------------------------------------- (10)
High/low alarm value setting----------------------- (10)
Other features----------------------------------------- (11)
Measurement tips------------------------------------(12)
Precautions for accuracy---------------------------(15)
Maintain and warranty------------------------------(17)
Table of sound velocity-----------------------------(19)
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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

-02-
Introduction
1).Introduction
This unit is an intelligent handheld product, which adopts
ultrasonic measuring principle, and is controlled by micro
processor, provides quick and precise measurement of
thickness for most of industrial material. This unit is widely
used in various precise measurement for different hardw-
are /parts in industrial realm; one of its important applica-
tion is to monitor the level of thickness-decreasing during
operation of various and pressure container. Diffusely
applied in manufacture fields, metal processing, and
commercial inspection.
2).Scope of application
This unit is suitable for measuring materials that are good
ultrasonic conductor such as metal, plastic, acrylic, glass
etc., as long as the measured part in two parallel surfaces
for measurement of thickness. This unit is not suitable for
cast iron due to its big crystalloid composition.
3).Features and functions
Preset
Auto calibration to assure the accuracy
Sound velocity measurement: with a given thickness to
measure the sound velocity to improve accuracy
12 sound velocities for different material
Coupling status indication
12 thickness measurement data store and recall
Thickness alarm setup
Backlight display
Low battery indication
Auto power off
Metric / Imperial selection
Measuring mode selection
1. Before use
Check-up
-01-
Carefully unpack your kit and ensure that you have
the following items. In case that any item is missing or
if you find any mismatch or damage, promptly contact
your dealer.
Ultrasonic Thickness Gauge
10 Transducer (5MHz)
6 Transducer (5MHz)
Coupling agent (50ml)
4mm Sample block
1.5V AAA Alkaline battery
English Instruction Manual
Aluminium Packing Box
Optional accesseries transducer:
10 Transducer (2.5MHz)
1PCS
1PCS
1PCS
1PCS
1PCS
3PCS
1PCS
1PCS
1PCS
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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

-04-
Ultrasonic Thickness Gauge
Diagram Of The Unit
1). Main Body:
①
②
③
④
⑤
⑥
⑦
LED
VEL
DEL
CAL
CLR
MODE
STORE
INCH
-03-
Specification
①. Measuring range: 1.00 to 300.0mm(steel)
②. Accuracy:±(1%H+0.1mm)
H denotes the measured thickness
③. Working frequency: 5MHz
④. Resolution:0.01mm(1.00 to 99.99mm)
0.1mm(100 to 300mm)
⑤. Minimum limit for tube measuring（steel）:
15*2.0mm( 6mm transducer)
20*3.0mm( 10mm transducer)
⑥. Sound velocity range:1000 to 9999m/s
Thickness≤25mm, accuracy of velocity:±1.25mm/Hx100%
Thickness≥25mm, accuracy of velocity: ±5%
⑦. Operating environment :
Operation temperature: 0 to 40℃
Relative Humidity: <90%
Do not apply in violent vibration / erosive material
Avoid impact and humidity
⑧. Power supply:1.5V AAA * 3 PCS
⑨. Weight:223g
⑩. Size: 72*29*146mm
①. LCD display ②. Keypad
③. Sample block ④. Battery compartement (rear case)
⑤. Transducer ⑥+⑦. Trasimit socket / Receive socket
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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

Control Panel
3).LCD display：
-05-
LED
VEL
DEL
CAL
CLR
MODE
STORE
INCH
LED
VEL
DEL
CAL
CLR
MODE
STORE
INCH
① ② ③ ④
⑤
⑥
⑦
⑨⑧
⑩
2.5
-06-
2. Operation Instruction
Thickness measuring
Paste the coupling agent on the measured place to
couple the sensor with the measured material. The
thickness value appears on LCD with the coupling icon
“ ”(the coupling fails if this icon flashes or disappears)
1.
Well coupled, and in process
of thickness measuring.
Thickness measuring completes,
remove the sensor away.
2). Keyboard
– On/off/backlight key
– Key for mode setup and retrieval
of data saved.
– Key for sound speed adjustment
– Key for confirmation and calibration
– Key for sound speed selection,
adjustment, depth value adjustment
and alarming value adjustment.
-- Key for sound speed selection, adjustment, thickness value
adjustment and alarming value adjustment.
LCD display
①. Coupling indicator
②. Transducer Frequency
③. Back light icon
④. Battery power
⑤. Thickness unit
⑥. Sound velocity indicator
⑦. Measuring mode selection
⑧. Sound velocity unit
⑨. Sound velocity reading
⑩. Velocity stored unit
. Thickness reading
Remarks:
a)Select the corresponding sound speed according
to the measured material and make direct measuring.
Because the actual speed differs with the speed
preset, this measuring method is not for accurate
measurement.
b)For accurate measurement, select a standard
block of the same material with that of the measured
object and measure its sound speed (refer to the part
of Sound Speed Measuring for details).
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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

-07-
3. Calibration:
Long press on the“CAL/CLR” key until 4.00 appears with
“CAL” flashing at the bottom. Take 4.00 standard calibrating
piece at the 5900m/s until the “CAL” disappears.
2. Sound speed adjustmen
Press “ VEL/DEL” key and the sound speed icon flashes,
then press the Up key or Down key to adjust the speed,
press the“VEL/DEL”key the “VEL” icon flashes, then press
the Up key or Down key to adjust the speed preset.
5.0
-08-
Adjusting the sound speed
within the unit
Adjusting the unit of
sound speed.
Calibration window
4. Sound speed measuring
Measuring the thickness Measuring the speed
5.Restoring the default speed value
Long press on“CAL/CLR”key until “CAL” followed with
“CLR” interface, release the key the speed jump to 5900
m/s automatically.
Restoring default speed
How to determine the sound speed of a certain material
with piece of given depth:Measure the depth of the mate-
rial with caliber or micrometer.Select a preset speed close
with the measured and couple the sensor with the block
with given thickness until a value is given, remove the
sensor and adjust the value with Up or Down key to make
it equaling with the actual thickness value. Press the“CAL
/CLR”key to display the measured speed and save the
value to the current unit automatically.The thickness must
be sufficient for measuring that is at least 25.0mm.
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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

-09-
5.0 5.0 5.0
-10-
6.Mode switching
Press MODE/STORE”key to switch among normal mode,
high gain mode and low gain mode. The normal mode has
no icon display while high gain and low gain have their
icons. The normal mode is for measuring the steel material
while the low gain mode for aluminum and copper material
and high gain mode acrylic material such as.
“
Low gain modeNormal mode High gain mode
7.Data saving
The thickness displayed while measuring, press CAL/CLR”
key can save the thickness value with the memory unit
flashing once indicating the current thickness is saved.
“FUL” on the LCD indicates the memory is full.
“
Saving the current value Memory is full
8.Data reviewing
Long press on the MODE/STORE” key to enter into reviewing
window, it displays “NON” if there is no datum saved. Use Up
key or Down key to review the data. Short press on the VEL
/DEL” key is to delete the current data. Long press on VEL
/DEL” key until “CLr” appears, that may clear all data saved.
Short press on CAL/CLR” key to leave reviewing window.
“
“
“
“
Clear the data saved
Review the
thicknesses saved
Delete the data
in current unit
9.High/low alarm value setting
Long press on MODE/STORE” key and key at the same
time until “LO” appears at the bottom and a value appears
at the top of the LCD indicating entry to the low alarm value
setting, then press Up key or Down key to adjust the value;
short press on MODE/STORE” key to switch to high alarm
value setting with “HI” appears at the bottom of the LCD,
then press Up key or Down key to adjust the value. After
adjustment, press “CAL/CLR” key to enter into measuring
window. High alarm limit is 305mm and low alarm limit 0.7
mm if the measuring is less than the low limit the buzzer
beeps once while larger than high limit it beeps 3 times.
“
“
LCD
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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

-11- -12-
Low alarm limit setting High alarm limit setting.
10.Backlight
When turning on, short press on the key to activate or
deactivate the backlight.
11.Sensor selection
Long press on key and press Up key to switch between
sensor2.5MHz and sensor 5MHz. Under 5MHZ sensor
press “MODE/STORE”key to swtich between d6 and d10.
Release the key after selection is done.
12.Unit selection
Long press on key , and press Down key to switch
between metric system and British system. Release the
key after selection is done.
13.Window after turning on
Full display appears after turning on with buzzer beep for 1
second and then enter into measuring mode.
14.Turning off
While turning on, long press on key to deactivate the
device. It turns off automatically if there is no further
operation within 3 minutes.
15.Low battery indication
The icon indicating low battery, and the battery should
be replaced immediately.
LCD
LCD
LCD
LCD
LCD
LCD
3. Measurement tips
1). Cleaning surface
Before measuring, the dust, dirt, rusting and grease etc
that adheres on the hardware/workpiece must be removed
off and cleaned.
2). Decreasing the roughness of surface
Too rough surface may result in measure error/ fault
reading. Please try to make the surface smooth by milling,
polishing, filling or using high viscosity coupling agent.
3). Rough machining surface
The regular tiny texture/slots resulting form rough mach-
ining process may cause error, and the compensation
method is the same as in 3.2, adjusting the angle between
the crosstalk segregating board of the transducer a metal
membrane crossing the detector bottom centre and linear
texture/slots (parallel or vertically) may also get a better
result.
4). Measuring pipe and tubing
When measuring cylindrical parts to determine the thick-
ness of the pipe wall, orientation of the transducers is
important. If the diameter of the pipe is large than appro-
ximately 4 inches, measurements should be made with
the transducer oriented so that the gap in the wearface is
perpendicular (at right angle) to long axis of the pipe.
For smaller pipe diameters, two measurements should
be performed, one with the wearface gap perpendicular,
another with the gap parallel to the long axis of the pipe.
The smaller of the two displayed values should then be
taken as the thickness at that point.
5). Complex shape material
For complex shape material measurement, please refer to
the 3.4, the smaller of the two reading should then be taken
as the thickness.
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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

-13- -14-
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
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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

-15- -16-
4. Precautions for accuracy
1). For very thin material
Any ultrasonic thickness gauge, when the thickness of
the material to be measured is less than the minimum limit
the fault reading will occurs. Using sample block compare
method to get a minimum limit of this material.
2). For stained, rusting surface
The stained/rusting surface on the contra side will occurs
the ruleless wrong readings. Sometimes a small stained
spot is hard to find out. Take care for measurement while
measuring the known rusting spot/suspicious area.
Or using sound insulation boardcelotex to locates the
spot in different testing angles.
3). Identify different velocity with vary material
A fault reading would obtains, when measuring the hard-
ware with the velocity calibrated by prior material. So a
correct velocity should be adopted. The fault reading may
also result form the difference between the actual velocity
with the calibrated value.
4). Abrasion fo the transducer
Because the transducer is made of propylene, long period
use will cause the surface of transducer became more
rough which will decline the sensitivity lead to the wrong
reading. Please polish the surface with sand paper or
whetstone to assure the smoothness and parallel. If the
reading still unsteady, the transducer should be replaced
with new one.
5). ZERO function
ZERO(calibration) is used to calibrate the unit with the
standard block on the panel, do press this key for calibr-
ation with other materials or will the wrong measuring
will take place.
6). Multilayer / composite material
It is impossible to read out the thickness of the uncoupled
multilayer for the ultrasonic wave can not go through the
uncoupled space. Further more, the sonic wave cannot
travel in the composite material at an even speed, so ult-
rasonic reflect principle cannot be applied to measure
the multilayer/composite material.
7). Influence from the oxidized surface
For some metals, such as aluminum a layer of oxide being
generated on their surface. The oxidized layer combined
with the substrate tightly, but the sonic wave travel within
2 different material which will lead to error reading, the
more oxidized layer the reading will be more tolerant.
Please calibrated the unit with the sample block that pick
up along the hardware to be measured, and obtain the
thick of sample block by using micrometer.
8). Abnormal reading
A seasoned operator should be capable to distinguish the
abnormal reading, practically result from rusting, erosive
recess surface / incorrect calibrate sample block/ the
inner flaw of material.
9). Choose and using coupling agent
Coupling agent serves the high frequency ultrasonic
wave transmitting between the transducer to the hardware.
Choose incorrect agent or wrong operation man cause
error or poor coupling which lead to failure of measuring.
The coupling agent should be used in proper way, typic-
cally, a single droplet of agent is sufficient.
It is important to use proper coupling agent, low viscosity
agent(the provided agent / machining oil) is suitable for
smooth surface. For rough / veritcal / aluminum surface,
high viscosity agent like glycerin and lubrication grease
is applicable. All kinds of coupling agent is available in
local market, you can buy it form local distributor as well.
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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

-17- -18-
5. Maintain And Warranty
1). Maintain
(1). Battery replacement
A).When low battery icon is showed, please replace the
batteries.
(A). Press to turn off.
(B). Open the battery door properly.
(C). Replace the low power batteries by new batteries.
B). When the gauge is not use for long period, please take
out the batteries.
2). Protection of transducer
Because the wear face of transducer is propylene mate-
rial which easy to be scratched. During taking measure-
ment on rough material, please using the transducer in
gentle motion. The temperature of the hardware should
not over 60℃, otherwise it will cause damage on the tra-
nsducer. Adhering oil, dust on the wear face will speed
up aging of transducer and lead to rupture. Clean the lead
-wire & transducer after use.
3). Cleaning the cabinet
Do not use solvent/alcohol for cleaning which erode the
cabinet & LCD window, brush and sweep only with a mo-
ist cotton cloth.
4). Cleaning the sample block
Because of coupling agent should be put on the sample
block during calibration, after use the sample block sho-
uld be cleaned for preventing rust. In higher temperature
environment, be sure protect the block form the droplet of
water. If the gauge is not use for a long period, please
apply some antirust on the sample block.
5). Avoid shocking/impact. Do not store the unit in high
humidity environment.
LED
2. Warranty:
1).When the tolerance is over than stated in this manual,
please refer to the 3, 4, 5 chapter, in this manual.
2). Please contact us or distributor if the following occurs:
A. Component being destroyed, enable to measure.
B. Abnormal LCD display.
C. The tolerance is too big in proper operation.
D. Malfunction of keypad.
3). This gauge is a advanced technology product, the
repairing only by technician authorized by us, do not
try any alterations or repair attempts.
4). Warranty policy:
Please fill the warranty card with your cachet/chop after
purchasing this products, the warranty period for rep-
aired is 12 months form the date of original purchase.
During warranty period, product must be returned with
the invoice(copy) and warranty card to our customer
service department. The product will not be warranted
which without the warranty card.
Over warranty period, any repairing / maintenance will
charge the fee on the buyer in standard rate by local
distributor. The standard rate is not including the acc-
essories which not packing in standard package(For
example, abnormity transducer, lengthen lead-wire,
special software) .
We disclaims any liability due to: transportation dama-
ges; incorrect use or operation; manipulation, alterati-
ons or repair attempts; without warranty card, invoice.
5). Non-warranty list:
LCD, battery, probe, sample block, plastic case,
coupling agent
A
1
2
3
4
5
6
A
DOCUMENT NO.: QR-208/A
B C D E
BCD E
1
2
3
4
5
6
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

6. Table of sound velocity
-19-
Speific Declarations:
1).The product design and the manual updating, repairing
by technician authorized by us, do not try any alternations
or repair attempts.
2).Dispose of battery should in accordance with local laws
and regulations.
Sound velocity of common materials
Aluminum
Zinc
Silver
Glod
Tin
Iron/Steel
Brass
Copper
SUS
Acrylic resin
Water（20℃）
Glycerinl
soluble glass
2670
3530
4430
5440
5720
6310
6020
5630
5850
5660
6070
4650
2620
Acetate resin
Phosphor bronze
Turpentine
Glass
Incoloy alloy
Magnesium
Monel alloy
Nickle
Steel 4330（mild）
Steel 330
Titanium
Zirconium
Nylon
6320
4170
3600
3240
3230
5900
4640
4700
5790
2730
1480
1920
2350
Material Velocity(m/s) Material Velocity(m/s)
A
1
2
3
4
5
6
A
DOCUMENT NO.: QR-208/A
B C D E
BCD E
1
2
3
4
5
6
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