YUSHI UM-5 Series User manual

Color Waveform
Ultrasonic Thickness Gauge
UM-5 Series
Operating Manual
YUSHI INSTRUMENTS
CONTENT
1. General Introduction............................................................................. 1
1.1 Construction of The Gauge ..............................................................2
1.2 Standard Configurations ..................................................................3
1.3 Optional Configurations .................................................................. 3
1.4 Specifications ...................................................................................4
1.5 Main Fuctions .................................................................................. 5
2. Keyboard Functions.............................................................................. 6
3. Measuring Thickness............................................................................ 6
3.1 Instrument Calibration .....................................................................6
3.2 Preset Other Specifications ..............................................................9
3.3 Normal Mode .................................................................................13
3.4 A-scan Interface Mode ...................................................................15
3.5 Real Cases Analysis of A-Scan ..................................................... 17
3.6 Operation of B-scan Interface ....................................................... 19
3.6.1 B-scan Display ....................................................................19
3.6.2 Introduction of B-Scan ....................................................... 19
3.7 Dual-echo (Thru-coating) Mode ................................................... 20
3.7.1 A-scan Interface in Dual-echo Mode ................................. 20
4. Data Storage Function........................................................................ 21
4.1 Thickness Value and Waveform Storage ....................................... 21
4.2 Browing The Stored Data .............................................................. 22
5. Measurement Applying Skills .......................................................... 22
5.1 Measuring Error Prevention .......................................................... 22
5.2 Measuring Methods ....................................................................... 23
5.3 Pipe Wall Measurement .................................................................24
5.4 Cast Measurement ......................................................................... 24
6. Care and Maintenances ...................................................................... 25
6.1 Power Source Inspection ............................................................... 25
6.2 Considerations ............................................................................... 25
6.3 Maintenances ................................................................................. 26
Appendix: Sound Velocities of Common Materrials....................... 27

1. General Introduction
UM-5 series ultrasonic thickness gauge adopts 2.4 inch color 320*240 dot
matrix LCD screen. Launch the ultrasonic through one side of the test material,
measure the digitized thickness real-timely, without cutting the object. As a
ultraminiature measuring gauge, is researched and developed by our company
according to the ultrasonic measuring theory. The features include fast ,
non-destruction and precise measuring. In addition, A/B-scan waveform
display is available by showing the echoes, which enables the more extensive
measure range, more precise result and very little measurement error and
finally makes the measuring processes more controllable.
UM-5 series ultrasonic thickness gauge, as the essential NDT instrument,
can be widely applied in the detecting fields like manufacturing, metal
processing, aerospace,railway traffic,chemical industry, commercial inspecting
and so on. It can not only precisely measure various kinds of panels and
processing components but also monitors the thickness minus of tubes and
pressure vessels in the manufacturing instruments after corrosion.
1.1Construction of The Gauge
1 2

1.2 Standard Configurations
NAME
NUMBER
THICKNESS GAUGE
1
PROBE
1
PROBE CABLE
1
ALKALINE BATTERY
2
RUBBER SHEATH
1
COUPLANT BOTTLE
1
CARRYING CASE
1
OPERATING MANUAL
1
USB CABLE
1(ONLY UM-5DL)
SOFTWARE CD
1(ONLY UM-5DL)
1.3 Optional Configurations
HIGH-TEMPERATURE PROBE
CAST IRON PROBE
SMALL PROBE
MINI PROBE
PROBE CABLE
STEP CALIBERATION BLOCK
RUBBER SHEATH
STORAGE OPTION(ONLY UM-5)
Probe and Measuring Range
1.4 Specifications
Display Type
2.4" color 320 × 240 dot-matrix LCD screen
Operating Principle
Ultrasonic pulse echo and echo- echo method with
dual element transducer
Measuring Range
0.5mm to 508mm(0.025" to 20.00"), depending on
material, probe and surface condition
Measuring Resolution
Selectable 0.01/0.1mm(0.001"/0.01")
Measuring Error
±0.05mm (H＜10mm)
± (0.5%H+0.01)mm (H≥10mm)
Note: H is the thickness of the measured object
Measuring Limits of
Tube (Steel)
Φ20mm×3.0mm(PT-08 probe)
Φ15mm×2.0mm(PT-06 probe)
The measuring error is within ±0.1mm
Units
Inch or Millimeter
Rectify Modes
RF+, RF-, HALF+, HALF-, FULL
Display Mode
Thickness Value, Min. / Max. capture, DIFF/RR%,
A-Scan, B-Scan
V-Path Correction
Automatic,compensate the non-linearity of dual
element probe
Update Rate
Selectable 4Hz, 8Hz, 16Hz
Material Velocity Range
500 to 9999m/s (0.0197 to 0.3937in/us)
Languages
Selectable Chinese, English, Germany, French,
Japanese,etc.
Alarm Settings
Minimum and Maximum alarms. Dynamic waveform
color change on alarm
Power supply
Two 1.5V AA batteries, 24 hours standby time
Instrument Shut-off
Optional Automatic shutdown or manual shutdown
after no operation for 5, 10, or 20 minutes
Operating Temperature
-10°C to +50°C (+10°F to +120°F), special
requirements up to -20℃
Size
153mm × 76mm ×37mm(H ×W ×D)
Weight
280g including batteries
Warranty
1 year
Probe Type
Frequency
(MHZ)
Contact Area
Diameter
Measuring Range
（in the Steel）
Allowable
Contact
Temperature
Cast Iron Probe ZT-12
2
17mm
(4.0～508.0)mm
(-10～60)℃
Standard Probe PT-08
5
11mm
(0.8～100.0)mm
(-10～60)℃
Standard Probe TC510
5
13.5mm
(1.2～200.0)mm
(-10～70)℃
Composite Crystal
Probe TC550
5
13.5mm
(1.2～200.0)mm
(-10～70)℃
Small Tube Probe
PT-06
7.5
8.7mm
(0.8～30.0)mm
(-10～60)℃
Miniature Probe PT-04
10
7.0mm
(0.7～12.0)mm
(-10～60)℃
High-Temperature
Probe GT-12
5
15mm
(4.0～80.0)mm
480℃below
3 4

1.5 Main Fuctions
1. Parameter configuration interface is simple and easy to operate.
2. Adjustable Live A-scan waveform display, control of Gain, Blanking, Gate,
Range and Delay etc.
3. Time-based B-scan function, displays a cross section of the test piece, for
observing the underside outline of the workpiece.
4. Numerical view, display thickness values with big digit.
5. Thickness alarm: programmable High-Low alarm set point with dynamic
change thickness value’s color.
6. Limit value mode: catching the minimum and maximum values when
measuring.
7. Difference mode: getting the difference between the actual value and the
normal value as well as the percentage of difference value and normal value.
8. Selectable units of mm and inch.
9. Optional resolution: ×.×× mm /×.×mm; ×.××× inch / ×.×× inch.
10. Optional waveform style: outline mode or fill mode
11. Optional rectification mode: RF+, RF-, full wave, half +, half -
12. Language: Chinese, English, German, French, and Japanese,
multi-languages available.
13. Approx. battery life: 24hours.
14.Great capacity data storage function: Stores 100,000 thickness
values&1000 waveforms(only UM-5DL).
15.Measure the net thickness of the workpiece through the coating layer (only
UM-5D&UM-5DL).
2.Keyboard Functions
There are 9 keys on the keyboard totally, including 3 virtual function keys
( ), four direction keys ( ), two
specialized function keys ( ). See the following illustration (2.1)
2.1 KEYBOARD FUCTION ILLUSTRATION
3. Measuring Thickness
3.1Instrument Calibration
Before using UM-5 series, the instrument and probe must be calibrated.
Purpose of calibration is performing probe zero procedure and obtain the
sound velocity of the material being tested. And it’s important to set up the
correct probe model firstly before the calibrating process. UM-5 series’
calibration divided in to the following:
1.Probe zero procedure：Use the zero block on the instrument to set up the
probe zero procedure.
2.One point calibration：Use the zero block on the instrument to set up the
probe zero procedure first, then obtain the velocity from the test block of
known thickness.
3.Two point calibrations ：Calibrate the probe zero and the velocity of test
block from two known thickness and same material standard blocks.
5 6

4. Dual Echo calibration：Calibrate the velocity from the test block of known
thickness.
5.Setting the velocity manually：If the material velocity is known, for example
the velocity of steel is 5900m/s. The sound velocity can be setting manually.
3.1.1 Probe zero calibration
Note: The calibration result is 4.00mm, only under the sound velocity of
5900m/S.
3.1.2 One point calibration
3.1.3 Two point calibration
3.1.4 Dual Echo calibration
7 8

3.1.5 Velocity adjusting steps
3.1 Velocity adjusting steps
Attention 1: Measure the standard block before the calibration, to ensure that
the current setting of instrument parameters can measure the standard test
block correctly.
Attention 2: Probe zero calibration, one point calibration and two point
calibration are suitable for single echo mode, dual echo calibration is suitable
for dual echo mode.
3.2 Preset Other Specifications
Press MODE to enter the specification configuration interface, which
including many specification adjusting options like FILE NUMBER,
MEASURING MODE, VIEW MODE, PROBE SETUP, MINIMUM ALARM,
MAXIMUM ALARM, NORMAL THICKNESS, THE MINIMUM OF B
SCAN, THE MAXIMUM OF B SCAN, RECTIFICATION,
RECTIFICATION WAVEFORM, RESOLUTION, UPDATE RATE,
LANGUAGE, UNITS, AUTO POWER DOWN,ERASE ALL FILES AND
DEFAULT SETUP. See the following figure:
3.2 SPECIFICATION ADJUSTING STEPS
FILE NUMBER – Select the current file. Total 400 files, and each file could
save 252 thickness values or waveforms.
MEASUREMENT MODE - Single echo and dual-echo mode. Single-echo
mode is used for common measurement; dual-echo mode is used for through
coating function.
VIEW MODE: normal mode, difference mode and limit scanning mode.
PROBE SETUP: selectable many probe models, including:
9 10

TC510 (standard probe)
TC550 (composite crystal probe)
PT-08(standard probe)
PT-06(small tube probe)
PT-04(miniature probe)
GT-12(high-temperature probe)
ZT-12 (cast iron probe)
NULL(Other probes)
MINIMUM ALARM: Set the minimum thickness alarm value, range of
0.15-635mm. The result will be displayed in red if the actual thickness is less
than the minimum value preset.
MAXIMUM ALARM: Set the maximum thickness alarm value, range of
0.15-635mm. The result will be displayed in red if the actual thickness is more
than the maximum value preset.
NORMAL THICKNESS: Set the normal thickness, range of 0.15-635mm.
The real concrete application will be introduced in the DIFFERENCE MODE.
MINIMUM OF B SCAN: Set the minimum thickness of the B scan.
MAXIMUM OF B SCAN: Set the maximum thickness of the B scan.
RECTIFICATION MODE: RF+, full wave, half -, half +, RF-. RF describes
the complete echo waveform; full wave indicates the half + echo and the
overturned half - echo; half – means putting off the half + echo and turn the
half – over to +; half + means putting off the half – echo and only left the half
+ echo. RF- indicates the phase waveform of RF+.
3.3 HALF-WAVE POSITIVE
RECTIFICATION WAVEFORM: outline mode and filled mode.
RESOLUTION: Set the decimal digits of the measurement result. Metric of
×.×and ×.××and imperial of ×.×× and ×.×××.
UPDATE RATE: Update the rate of measurement result. Optional 4Hz, 8Hz
and 16Hz.
LANGUAGE:Chinese/English/German/French/Japanese languages are
available
UINTS: Selectable units of mm/inch.
AUTO POWER DOWN: The instrument automatically shuts down after a
certain period of time without operation, which can be 5 minutes, 10 minutes,
20 minutes or manual shut down only.
DELETE ALL FILES –Empty the thickness readings and waveform of all
files.
DEFAULT SET UP –Set all parameters to their factory default value.
11 12

3.3 Normal Mode
UM-5 series have three measuring interface: normal mode, A-scan interface,
B-scan interface. And there are three display modes of normal interface:
Thickness value mode, difference/rate-of-reduction measurement mode, MAX.
/MIN. measurement mode. Select in the “VIEW MODE” of
CONFIGURATION.
ATTENTION: When the probe and the object are not completely coupled, the
font in the various interfaces are in GREEN, when properly coupled, they are
displayed in WHITE color and when the either the upper or lower limited are
exceeded, the front are displayed in RED color.
THICKNESS VALUE MODE: the default interface. This interface mainly
shows the present thickness value with large digits.
3.5 NORMAL MODE INTERFACE
1—the present thickness value 2—probe types, gain degree, single-echo, measuring
units 3—material velocity 4—battery power display 5—A—scan interface
DIFFERENCE/RATE-OF-REDUCTION MODE: The interface displays the
difference (difference between measured and nominal thickness) and reduction
(difference as a percentage of nominal thickness), as well as the current
measured and nominal thickness values. Before using this mode, presetting the
nominal thickness is needed. The method can be taken according to chapter
3.2
3.6 DIFFERENCE MODE INTERFACE
1—the difference between the nominal value and the measured value
2—the ratio between the difference and the nominal value 3—the currently
measured thickness value 4—the nominal value 5—difference signal
6—material velocity 7—battery power 8—A—scan interface 9 -- probe type,
gain degree, single echo, measurement unit
LIMITS VALUE SCANNING MODE: This mode allows the user to catch the
real-time maximum and minimum thicknesses when test the thickness of
material continuously. It shows the minimum and maximum values during the
testing as well as the currently thickness. Press the RESET relevant to get the
limits when measuring the thickness.
3.7 LIMITS VALUE MODE INTERFACE
1—the current measured value 2—the maximum value
3—the minimum value 4—unit
5—material velocity 6—battery power 7—A—scan interface 8—reset
13 14

3.4 A-scan Interface Mode
In this mode, users could view the current thickness value and the A-scan
waveform at the same time. The right side of the interface is the specification
adjusting area, in which the specifications can be adjusted and finally solve
various difficult and complicated thickness measuring applications to the
capacity.
3.8 A-SCAN MODE INTERFACE
3.8 -SCAN INTERFACE MODE
1—waveform display area 2 —gate 3 —material velocity 4 —the
magnifying selected specification 5 —measuring point( the first point of
intersection between the waveform and the gate) 6 —the present thickness
value 7—the blank confines 8—the beginning coordinate on the screen 9—the
specification adjusting area 10—the selected specification 11—large digits
mode 12—specification selection 13—battery power
Attention: when the probe and the object are not complete coupled, the font in
the various interfaces are in GREEN, while if they coupled well, in WHITE
color and when the either the upper or lower limited are exceed, the font and
waveforms are displayed in RED color.
In the A-scan interface, press the bottom right button NEXT to
highlight the value to be adjusted. Then press the direction keys to adjust the
values. Up and down keys are used for small increments, while left and right
for large increments.
GAIN —Adjust the amplification of echo signal by instrument to allow
manual increase or decrease in ldB. This function is very useful for the testing
of attenuation materials (like metal cast).
RANGE —Adjust the range of waveform that the screen displays. The
waveform can be compressed or spread visually and it’s invisible if the
display range is set incorrectly and the echo waveform is beyond the display
area, however, the testing value can also be read correctly.
DELAY —Adjust the starting position of the waveform on the screen. The
waveform will move horizontally adjusting this value, and it’s invisible if the
delay is set incorrectly and the echo waveform is beyond the display area,
however, the testing value can also be read correctly.
BLANK—Hide the unnecessary and useless clutter in front of the main waves.
The red line on the bottom of the screen shows the blank confines. The
adjusting blank confines are the present range confines. In the real testing,
wrong measurement due to the material may exist, such as near surface serious
corrosion, AL material, inside defects, uneven component, lamination
structure and so on. While adjusting the gain or gate can solve part of the
problem, but only blank function can avoid the mistake when those clutter
echoes are higher than the bottom echoes.
15 16
3.9 The waveform before blanking
3.10 omit the front noise waves by blanking

GATE —adjusting the height of the gate.Only when the waveform is higher
than the gate, the gauge can take the echo and show the value. Attention: this
will only show when the GATE specification is highlighted. The first
intersection point between the waveform and gate is pointed by a red arrow,
which can help judging whether the thickness value is correct (the red arrow
should point the front of the first bottom echo if correctly tested).
3.5 Real Cases Analysis of A-Scan
1. When measuring the thickness, it’s possible that that over small gains
prevent the precise results. As showed in the following figure, the thickness of
the testing object is about 5mm, but as for the very small gain, the measuring
result is 10.77mm as the first echo has not broken the gate and the gate locates
the second echo automatically. This is obviously an incorrect result, and
customer can pull up the echo by enhancing the gain setting to make the first
echo brake through the gate to achieve the correct measurement.
3.12 REAL CASE 1
2. There are some defects in the testing object, and the gate locks the defect
echoes. As showed in the following figure, the thickness of the testing object
is about 10mm, but as there are obvious defects (the defect echoes are showed
on the display) and the gate locks the defect echoes which have broken the
gate, thus, the testing result shown is the thickness of the defect area. The right
measurement can be realized by adjusting the gate setting above the defect
echoes.
3.13 REAL CASE 2
3. If there are some surface faults in the testing object and the gate locks the
defect echoes, the measuring result will be the thickness of the defect area. In
this condition, the customer can use the BLANK function to get the correct
testing result. As showed in the following figure, the line on the bottom of the
screen, which we use to shield the defect echoes, indicates the blank confines
and makes the gate not catch the echoes within the blank confines, thus, the
right thickness value is acquired.
3.14 REAL CASE 3
17 18
3.11 waveform of the 0.02in sheet by PT04