ECEFAST TDS-110 Manual de usuario

TDS-110 Ultrasonic Thickness Gauge

Instruction Manual

TDS-110 Ultrasonic Thickness Gauge

Content

1 INTRODUCTION............................................................................................3

1.1 SCOPE OF APPLICATIONS................................................................................3

1.2 PRIMARY THEORY .........................................................................................3

1.3 MEASURING PRINCIPLE .................................................................................3

1.4 APPEARANCE.................................................................................................4

1.5 KEYBOARD ....................................................................................................4

1.6 DISPLAY SYMBOLS.........................................................................................5

2 PRODUCT SPECIFICATIONS.....................................................................5

2.1 TECHNOLOGY PARAMETER ............................................................................5

2.2 MAIN FUNCTIONS ..........................................................................................6

3 OPERATION....................................................................................................6

3.1 PREPARATION FOR MEASUREMENT ................................................................6

3.2 ADJUSTING SOUND VELOCITY ........................................................................6

3.3 SETTING PROBE FREQUENCY..........................................................................7

3.4 MEASUREMENT OF THICKNESS ......................................................................7

3.5 MEASUREMENT OF SOUND VELOCITY ............................................................7

3.6 SETTING ALARM THICKNESS LIMITS...............................................................8

3.7 MENU OPTION................................................................................................8

3.7.1 SYSTEM SETUP ...........................................................................................9

3.7.2 PRINT FUNCTION.......................................................................................11

3.7.3 MEMORY MANAGE...................................................................................11

4 DATA LOGGER OPERATION...................................................................12

4.1 LOGGING READINGS INTO MEMORY .............................................................12

4.2 REVIEWING STORED THICKNESS READINGS..................................................12

4.3 CLEARING CURRENT THICKNESS VALUE......................................................12

5. MEASURING TECHNOLOGY..................................................................13

5.1 CLEANING SURFACE.....................................................................................13

5.2 IMPROVING REQUIREMENT ON ROUGHNESS..................................................13

5.3 ROUGH MACHINED SURFACE........................................................................13

5.4 MEASURING CYLINDRICAL SURFACE............................................................13

5.5 COMPOUND PROFILE....................................................................................13

5.6 UN-PARALLEL SURFACE...............................................................................14

5.7 INFLUENCE OF MATERIAL’S TEMPERATURE..................................................14

5.8 MATERIAL WITH LARGE ATTENUATION........................................................14

5.9 REFERENCE TEST PIECE................................................................................14

5.10 SEVERAL MEASURING METHODS................................................................15

TDS-110 Ultrasonic Thickness Gauge

5.12 CHANGING PROBE......................................................................................15

5.13 MEASURING CASTING ................................................................................16

6 PREVENTING ERRORS IN MEASUREMENT.......................................16

6.1 ULTRA-THIN MATERIAL ..............................................................................16

6.2 RUST,CORROSION AND PIT .........................................................................17

6.3 ERROR IN IDENTIFYING MATERIAL..............................................................17

6.4 WEARNESS OF PROBE ..................................................................................17

6.5 OVERLAPPED MATERIAL AND COMPOUND MATERIAL ................................17

6.6 INFLUENCE OF OXIDATION LAYER AT METAL’S SURFACE...........................17

6.7 ABNORMAL READOUT OF THICKNESS..........................................................17

6.8 UTILIZATION AND SELECTION OF COUPLING AGENT ...................................17

7. ATTENTION.................................................................................................18

7.1 CLEANING THE TEST PIECE..........................................................................18

7.2 CLEANING THE INSTRUMENT’S CASE...........................................................18

7.3 PROTECTING THE PROBE..............................................................................18

7.4 REPLACING BATTERIES................................................................................18

7.5 ABSOLUTELY AVOID COLLISION AND MOISTURE..........................................19

8. MAINTENANCE ..........................................................................................19

9.CONFIGURATION.......................................................................................20

APPENDIX Ⅰ..................................................................................................21

SOUND VELOCITY FOR DIFFERENT MATERIALS ...............................................21

TDS-110 Ultrasonic Thickness Gauge

1 Introduction

1.1 Scope of applications

Ultrasonic Thickness Gauge measuring with ultrasonic wave, is applicable

for measuring the thickness of any material in which ultrasonic wave can be

transmitted and reflected back from the other face.

The gauge can provide quick and accurate measurement to various work

pieces such as sheets of board and processing parts. Another important

application of the gauge is to monitor various pipes and pressure vessels in

production equipment, and monitor the thinning degree during using. It can be

widely used in petroleum, chemical, metallurgy, shipping, aerospace, aviation

and other fields.

1.2 Primary Theory

The primary theory of measuring thickness with ultrasonic wave is similar

to that of measuring thickness with optical wave. The ultrasonic wave emitted

from the probe reaches the object and transmits in it. When the ultrasonic wave

reaches the bounding surface of the material, it is reflected back to the probe.

The thickness of the material can be determined by accurately measuring the

time of the ultrasonic wave transmitting in it

1.3 Measuring Principle

The digital ultrasonic thickness gauge determines the thickness of a part or

structure by accurately measuring the time required for a short ultrasonic pulse

generated by a transducer to travel through the thickness of the material,reflect

form the back or inside surface, and be returmed to the transducer.The measured

two-way transit time is divided by two to account for the down-and-back travel

path,and then multiplied by the velocity of sound in the material.

The result is expressed in the well-known relationship:

Where: H—Thickness of the test piece.

v----Sound Velocity in the material.

t----The measured round trip transit time.

v ×t

H =

TDS-110 Ultrasonic Thickness Gauge

1.4 Appearance

1.5 Keyboard

PowerON/OFF ☼LCD backlight on/off

VEL sound velocity Save data / Browse data

CAL Calibration standard block of 4.00mm

MENU Function selector

Adjusting sound velocity and thickness; key for moving menu cursor

Adjusting sound velocity and thickness; key for moving menu cursor

2-point calibration; To be used together with function keys.

TDS-110 Ultrasonic Thickness Gauge

1.6 Display symbols

2 Product Specifications

2.1 Technology parameter

Display: 128×64 LCD with LED backlight.

Measuring range: 0.75mm~300.0mm (0.03inch~11.8 inch)

Sound Velocity Range: 1000m/s~9999m/s (0.039~0.394in/µs

Display resolution: 0.01mm or 0.1mm (lower than 100.0mm)

0.1mm (more than 99.99mm)

Accuracy: ±(0.5%Thickness +0.02)mm, depends on Materials

and conditions

Units: Metric/Imperial unit seletable.

Lower limit for steel pipes:

5MHz probe: 20mm3.0mm (0.80.12 inch)

10MHz probe: 20mm3.0mm (0.60.08 inch)

Power Source: 2pcs 1.5V AA size, batteries.100 hours typical operating

time(LED backlight off).

Communication: RS232 serial port

Outline Dimensions: 150mm×74mm×32mm

Weight: 238 g

Four measurements readings per second for single point measurement,

Memory for up to 5 files(up to 100 values for each file) of stored values

TDS-110 Ultrasonic Thickness Gauge

2.2 Main Functions

1) Capable of performing measurements on a wide range of material, including

metals,plastic,ceramics,composites,epoxies,glass and other ultrasonic wave

well-conductive materials.

2) Transducer models are available for special application,including for coarse

grain material and high temperature applications.

3) Probe-Zero function,Sound-Veloctiy-Calibration function.

4) Two-Point Calibration function.

5) Coupling status Indicator showing the coupling status.

6) Battery information indicates the rest capacity of the battery.

7) Auto sleep and auto power off function to conserve battery life.

8) Optional software to process the memory data on the PC.

9) Optional thermal mini-printer to print the measured data via RS232 port.

3 Operation

3.1 Preparation for measurement

3.1.1 Insert the probe plug into the socket for the probe on the main unit,

3.1.2 Press to turn on the instrument。

3.1.3 Lcd will Display soft editions information about the instrument. And

then display Latest sound velocity.

3.2 Adjusting sound velocity

If the current display is thickness, by pressing VEL, you can come into

speed-of-sound state, and it will display content in current sound velocity

memory unit. The sound velocity memory unit will change once every time

when you press the VEL key, it can display 5 sound velocity alternatively. If

you hope to change the contents in the current sound velocity unit, you can

adjust that with or till reach the desired value, and then the value be

saved to memory.

TDS-110 Ultrasonic Thickness Gauge

3.3 Setting probe frequency

Press MENU key to move the cursor to the position as that shown in the

following figure. Press to change the frequency setting. LCD will display

in sequence the probe frequency to be set 5M, 7M or ZW.

3.4 Measurement of thickness

First, set the sound velocity, then coat the coupling agent at the place to be

measured, couple the probe with the material to be measured, now you can

begin the measurement. The screen will display the thickness of material to be

measured. After you remove the probe, the thickness value will be maintained,

while the coupling indicator will disappear.

Note: when the probe is coupled with the material to be measured, the

instrument will display the coupling indicator; if the indicator flashes or doesn't

appear, it means that the coupling is not so good.

3.5 Measurement of sound velocity

The sound velocity of a material can be measured using a test piece with given

thickness. First, measure the test piece with caliper or micron micrometer and

read the thickness accurately. Couple the probe with the test piece with given

thickness till it displays a value, remove the probe, then adjust the display to the

TDS-110 Ultrasonic Thickness Gauge

actual thickness with or , press VEL, now it will display the sound

velocity to be measured. Save the value into current sound velocity memory unit.

For measuring sound velocity, one must select a test piece with adequate

thickness, and the recommended min. wall thickness is 20.0mm. When

measuring the sound velocity, please turn off the min. capturing function.

For example: To measure the sound velocity of a material with a thickness of

25.0mm, the procedure is:

3.6 Setting alarm thickness limits

The instrument will alarm if the measurement is out of limits. When the

measurement is lower than the low limit or higher than the high limit, the buzzer

will alarm. The alarming limit is set as follows:

1) Press MENU, move cursor to ALARM.

2) Press display the low and high limit of previous setting, useor to set

the new low or high limit.

3) To exit the Limit Setting, press VEL, MENU, or start to measure.

3.7 Menu option

The setting and function of the instrument be handle in Menu option.

Press MENU, move cursor to MENU then Press display main menu.

TDS-110 Ultrasonic Thickness Gauge

3.7.1 System Setup

Measurement units: metricandImperial

1) Receiving gain: LOW and HIGH

1. The LOW is mainly used for measuring coarse material with high

scatter and small sound absorption, such as cast aluminum, cast

copper and other metallic parts.

2) Display resolution: 0.1mm(LOW) and 0.01mm(HIGH)

3) Minimum capture measurement OFF and ON

1. To capture min.

measurement is to trap the

minimum value in a group

of measured values. When

the probe couples with the

work piece, it will display

actual measurement, when

the probe is taken away, it

will display the min. value

of measurement carried

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