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Full Text Searchable PDF User Manual
Ultrasonic Thickness Gauge
Precautions for accuracy---------------------(17)
Maintain and warranty-------------------------(19)
Table of sound velocity------------------------(21)
Thickness alarm set-up
Thickness data storage/record/delete------------
Diagram of the unit ------------------------------------(04)
Ultrasonic Thickness Gauge
10 Transducer (5KHz)
Coupling agent (50ml)
4mm Sample block
1.5V AAA Alkaline battery
English Instruction Manual
Aluminium Packing Box
Optional accesseries transducer:
10 Transducer (2.5KHz)
1. Before use
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
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
2).Scope of application
This unit is suitable for measuring materials that are good
ultrasonic conductor such as metal, plastic, ceramic,
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
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
Low battery indication
Auto power off
Metric / Imperial selection
. Measuring range: 1.00 to 300.0mm(steel)
denotes the measured thickness
. Working frequency: 5MHz
. Resolution:0.01mm(1.00 to 99.99mm)
0.1mm(100 to 300mm)
. Minimum limit for tube measuring steel
. Sound velocity range:1000 to 9999m/s
20mm, accuracy of velocity:
, accuracy of velocity:
. Operating environment :
Operation temperature: 0 to 40
Temperature of workpiece: < 6 0
Relative Humidity: <90%
Do not apply in violent vibration / erosive material
Avoid impact and humidity
. Power supply:1.5V AAA * 3 PCS
. Operation current: 35mA (with back light on)
. Size: 72*29*146mm
Ultrasonic Thickness Gauge
. LCD display
. Sample block
. Battery compartement (rear case)
. Trasimit socket /
Diagram Of The Unit
1). Main Body:
. Coupling indicator
. Transducer Frequency
. Back light icon
. Battery power
. Thickness unit
. Sound velocity indicator
. Thickness alarm
. Sound velocity unit
. Sound velocity reading
. Velocity stored unit
. Thickness reading
-- Alarm set-up/Data recall
-- Velocity set-up/ Select / delete
-- Enter / Calibration
-- Velocity / Thickness /Alarm adjust
-- Velocity / Thickness /
Alarm adjust , Backlight ON/OFF
Ready to use
2. Operation Instruction
1). Connect the transducer with the unit, then press to
turn on. LCD with full screen display with back light for
0.5 second, then LCD display the last applied sound
velocity. Now the unit is ready for use.
2).Sound velocity selection
Press twice to entre sound velocity adjustment with
icon blinking, press up or down key to select your
desired velocity, to finish the selection by press .
3).Sound velocity adjustment
Press onece to entre velocity adjustment with stored
velocity unit blinking, press up or down key to adjust the
velocity to obtain desired value, then press to finish
the adjustment. The revised velocity will be saved into the
On normal status, press for 3 second, then CAL
symbol shows in LCD with 5900 m/s velocity and 4.00 mm
Use the standard sample block for calibration, until CAL
symbol disappeared, press up or down key to entre mea-
Ready to calibration
Ready to use
Put few coupling agent on the area to be measured to
couple the transducer with the hardware/workpiece. LCD
will display the thickness reading. During measurement,
indicates a well coupling, if the icon flashed or not shows
means a poor coupling, after remove transducer, the reading
will hold without .
1).To select / adjust the velocity as the table of sound velocity
for thickness measurement. But the actual velocity in the
hardware / workpiece will slightly different, in this case the
reading of thickness not very accurate.
2).Select a sample block with same material to the hardware
or workpiece to be measured to read out the velocity. Then
apply this velocity for thickness measurement. In this way
the reading of thickness much more accurately.
With a given thickness to read out velocity of material:
Obtains the thickness of material by using vernier caliper /
micrometer. Then couple the transducer with that sample
material until a thickness displays, press up or down to adjust
the reading match the thickness by caliper/micrometer, then
press to display the velocity and save in current velocity
Thickness Alarm Set-up
Press will entre LOW thickness alarm set-up, press
up or down key to adjust the limit, then press to confirmed.
Then it will turn into HIGH thickness alarm set-up, press
to save the setting as default alarm. During measurement, if
the thickness over/under the setting limit, BIBI sounds and
HIGH/LOW will indicates for alarming.
Low Limit set-up
High Limit set-up
Thickness Data Storage/record/delete
1). Thickness data storage
During measurement, press once to save the thick-
ness reading, if a FUL symbol show in the LCD that indicates
the memory is full.
2). Store thickness data record
Press for 3 seconds to entre data record mode, press
up or down key to review M01 to M12 stored data.
If the memory unit is vacant, LCD will display ----, press
again turn to normal status.
(1). Press for 3 second to clear all stored data,
symbol will show on LCD.
(2). In data recall mode, press to delete current
stored data. After delete data, the vacant memory will
display---- on the LCD.
Clear all data
Delete current data
1). Low battery indication
When battery power down to 3.3V 0.2V, the low battery
icon will display, please replace the batteries for
2). Back light selection
Keep pressing the to turn on (not release), press
to chose backlight ON/OFF. Then release .
If backlight ON is Chosed, any operation will active the
backlight. The backlight will be turned off in 10 seconds
The backlight status will be memorized, until you change
3) Metric / Impetric selection
Keep pressing the to turn on (not release), press
to close your desired unit. Then release .
The chosen unit will be memorized until you change it!
4). Turn off:
Press to turn off/on the unit. The unit will be turned
off in 1 minute without any operation.
Press up or down key to adjust/select different velocity or
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
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.
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
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.
11). Selection of transducer
10). The wear of the transducer will effect the measurement,
when below situation happen, please replace the
A. only display one reading when measured different
B. reading display without take measurement.
1.00mm to 300.0mm(steel)
1.00mm to 50.0mm(steel)
1.00mm to 300.0mm(steel)
-10 to 60
-10 to 60
-10 to 60
1 0 m m
6 m m
1 0 m m
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.
5. Maintain And Warranty
(1). Battery replacement
A).When low battery icon is showed, please replace the
(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
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,
Sound velocity of common materials
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
6. Table of sound velocity