Triplett UTG300 User manual
User Manual
UTG300
Ultrasonic Thickness Gauge
1. Overview
Congratulations on your purchase of the Triplett UTG300
Ultrasonic Thickness Gauge. This product is an intelligent
ultrasonic thickness gauge that adopts the latest high
performance and low power consumption microprocessor
technology. Based on the principle of ultrasonic
measurement, it can measure the thickness and sound
speed of metal and other materials. It can detect the thinning
of pipes and pressure vessels after corrosion, and can make
accurate measurements of plates and machined parts. The
gauge can be widely used in petroleum, chemical,
metallurgy, shipbuilding, aviation, aerospace and other
fields.
1.1 Operating Principle
When measuring the thickness, the ultrasonic pulse is
generated by the probe to reach the measured body
through the coupling agent. Part of the ultrasonic signal is
reflected from the bottom of the object, and the probe
receives the reflected echo. The gauge calculates the
round trip time of the ultrasonic wave and the thickness
value according to the following formula, and then
displays the calculated results.
In the formula: H-Measured thickness; V-Material sound
velocity; t-Round trip time of ultrasonic wave in specimen
-01-
1.2 Specifications
Display
2.4" monochrome dot matrix screen
Language
English/Chinese
Measurement range
1.00~300.00mm
Sound velocity range
(1000
～
9999) m/s
Unit
0.1mm/0.01mm/0.01in
H<10mm, ±0.1mm, H is the actual
Accuracy
thickness;
H
≥
10mm, ±(1%H+0.1)mm
Lower limit of pipe measurement
Φ
20×3mm (steel)
300 groups, including material, sound
Data storage
velocity, unit, measured value, MAX,
MIN and AVG of each group
Single measurement, continuous
Main functions
measurement, alarm, sound velocity
measurement, auto calibration
Battery
Built-in 3.7V 2000mAh lithium battery
Charging specification
DC5V 1A, Type-C interface
Operating time (full battery)
About 16h
Operating temperature and humidity
0
℃
~40
℃
10%RH~80%RH
Storage temperature and humidity
-10
℃
~50
℃
10%RH~70%RH
Product size
140×66×28.5mm
Note: 1) Oil coupling agent cannot be used for the
standard probe, otherwise the probe will be damaged.
After using the probe, please wipe the residual coupling
agent on it to extend its service life.
2) Please avoid using the product in oily environment
as far as possible. If unavoidable, minimize the contact
time with oily substances, and wipe the probe
surface with oil-absorbing paper after use.
-02-
2. Structure and Appearance
4
Product features
5
3
2
1
Single
20.00mm
Mat
Steel
5920
Max
mm
Min
mm
Avg
mm
ULTRASONIC THICKN ESS GAUG E
Mode
m/s
Menu
Cal
Rec
Enter
B ack
Alarm
6 7
1.
Outer shell
2. Buttons
3. Display
4.
Transmitting socket
5. Receiving socket
6. Standard thickness block
7. Probe
-03-
2.1 Main Interface
After the gauge is turned on, it will automatically enter
the main interface, as shown below:
6
1
2
5
4
Scan
4.42mm
Mat：
Custom�
5920
Max
4.50mm
Min
4.42mm
Avg
4.43mm
3
3. Battery Charging and Maintenance
The product is equipped with a non-removable
3.7V 2000mAh lithium battery.
When the product cannot be turned on or the battery
is empty, please charge it in time.
Charge the product with a DC5V adapter larger than
1A and the charging interface is Type-C.
When charging, the battery icon scrolls . When
fully charged, the battery icon becomes full .
-04-
Note: When not in use for a long time, the product should
be fully charged and recharged every six months to
avoid battery damage.
4. General Measurement Process
5. Preparation
5.1 Treatment of Measured Workpiece Surface
If the measured object surface is rough or
seriously rusted, please use the following methods:
●Use coupling agent on the measured object surface
●Use rust remover, wire brush or sandpaper to treat
the surface
●Multiple measurements near the same point
6. Operation
6.1 Power On/Off
Insert the probe into the gauge and short press to
power on.Long press to power off.
Auto power off: The product will shut down automatically
when there is no operation. The default time is 5 minutes.
Users can select the auto power off time, refer to 6.18 Power Off.
Force shutdown: Long press the Power button for more than 10s.
-05-
6.2 Single Measurement
Evenly smear the coupling agent on the area to be
measured. Tightly couple the probe to the material
surface, and the thickness of the measured area will
show on the screen. When the probe is well coupled to
the material, the screen will display the coupling symbol
. If the coupling symbol flickers or there is no
coupling symbol, it indicates that the coupling condition
is bad and the coupling agent needs to be added. After
the probe is removed, the coupling symbol disappears
and the thickness value remains.
Figure 1 Add the coupling agent
Figure 2 Evenly smear the coupling agent and
tightly couple the probe to the material surface.
-06-
6.3 Continuous Measurement
Evenly smear the coupling agent on the area to be
measured and couple the probe to the material surface.
Move the probe along the surface. The gauge will
display the current measured value, MAX, MIN and AVG
in real time.
6.4 Alarm
Users can monitor the unqualified materials with the
alarm function. Long press to turn on/off the alarm.
If is displayed on the screen, the alarm is turned on.
If is displayed on the screen, the alarm is turned off.
For example:
Standard value: 4.00mm, limit: ±0.1mm. When the
measured thickness is less than 3.90mm or greater than
4.10mm, the gauge will give an alarm sound, indicating that
the thickness is not qualified. Users can press any button to
exit the alarm, or continue measuring.
6.5 Calibration
Note: Calibration should be carried out when the probe
is replaced, the ambient temperature changes greatly
or the measurement deviation occurs.
Calibrate the gauge if it is used for the first time or not
used for a long time. Calibration must be done using
the standard thickness block. After calibration, the
material automatically changes to steel, and the sound
velocity changes to 5920m/s (0.233in/us).
-07-
Calibration steps:
1) Long press to enter the calibration mode.
"Please Calibrate" will show on the screen.
2) Refer to Figure 1 and Figure 2 in 6.2 Single
Measurement to evenly smear the coupling agent on
the surface of the standard thickness block. Press
the probe on the coupling agent to make it tightly contact
with the block surface. (Note: the coupling agent should
not be too thick. Otherwise the gauge will count the
thickness of the coupling agent, resulting in calibration
errors).
3) Press to save the calibration data. (Note: Before
pressing , the value displayed might not be 4mm. When
the value is stable, press . After calibration, the displayed
value should be within the range of 4±0.04mm,
otherwise recalibrate).
6.6 Sound Velocity Measurement
Different materials have different sound velocities. The
materials and velocities listed in Appendix A are for r
eference only.This function is used to measure the sound
velocities of materials. The steps are as follows:
1) First calibrate the gauge.
2) Use a caliper to measure the thickness of
the workpiece.
3) Use the gauge to measure the thickness of the
workpiece.
- 08 -
4) Press or to make the thickness measured by
the gauge the same as the value measured by the caliper.
5) Press to calculate the workpiece sound velocity.
6) At this point, the correct sound velocity can be obtained,
and the correct thickness can be obtained by measuring
the same material with the sound velocity.
Note: The thickness adjustment range is ±20mm
(±0.79in) (for customized materials, ±250mm
(±9.84in)). The upper limit is 300mm, and the lower
limit is 1mm. In case of misoperation, users can refer to
6.7 Sound Velocity Selection.
- 9 -
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