Triplett UTG300 Manuel utilisateur

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;

≥

10mm, ±(1%H+0.1)mm

Lower limit of pipe measurement

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

℃

~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

Product features

Single

20.00mm

Mat

Steel

5920

Max

Min

Avg

ULTRASONIC THICKN ESS GAUG E

Mode

m/s

Cal

Rec

Enter

B ack

Alarm

6 7

Outer shell

2. Buttons

3. Display

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:

Scan

4.42mm

Mat：

Custom�

5920

Max

4.50mm

Min

4.42mm

Avg

4.43mm

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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