Tqc sheen Ld7015 User manual

ULTRASONIC THICKNESS

ULTRASCHALL-WANDDICKENMESSER

ULTRASONE WANDDIKTEMETER

LD7015 / LD7016

User Guide

Bedienungsanleitung

Gebruiksaanwijzing

V1.2 0121

CONTENT / INHALT / INHOUD

English - User Guide - LD7015 3 - 8

English - User Guide - LD7016 9 - 18

Deutsch - Bedienungsanleitung - LD7015 19 - 24

Deutsch - Bedienungsanleitung - LD7016 25 - 31

Nederlands - Gebruiksaanwijzing - LD7015 32 - 37

Nederlands - Gebruiksaanwijzing - LD7016 38 - 47

This product complies to

- Machinery Directive 2006/42 / EC

- Low Voltage Directive 2006/95 / EC

- EMC Directive 2004/108 / EC

This product is RoHS 2 compliant (2011/65/EU)

Das Produkt erfüllt:

- Maschinenrichtlinie 2006/42 / EC

- Niederspannungsrichtlinie 2006/95 / EC

- EMC-Richtlinie 2004/108 / EC

Dieses Produkt ist RoHS2 konform (2011/65/EU)

Dit product voldoet aan:

- Machinerichtlijn 2006/42 / EC

- Laagspanningsrichtlijn 2006/95 / EC

- EMC richtlijn 2004/108 / E

Dit product is conform RoHS 2 (2011/65/EU)

ENDE

EN - LD7015

1 ULTRASONIC THICKNESS GAUGE BASIC LD7015

Ultrasonic thickness gauge specically designed to measure the thickness of metallic and non-

metallic materials e.g. aluminium, titanium, plastics, ceramics, glass and plastics. It can also be

used to monitor all types of pipes and pressure vessels for loss of thickness due to corrosion or

erosion. The gauge is easy to use and will give accurate readings to an accuracy of 1%. This unit is

not suitable for cast iron due to its big crystalloid composition.

1.1 Specications

Measuring method : Ultrasonic pulse echo

Measuring frequency : 5MHz

Measuring range : 1.20 - 220 mm (steel); (deviation possible with use of

other materials)

Measuring range (tubes) : 20x3mm (steel)

Nauwkeurigheid : +/- (1%H + 0.1) mm

Display : LCD

Resolution : 0.1mm

Operation temperature : 0 ºC ~ 40 ºC

Batteries : 3x AAA alkaline batteries (total 5V)

Size : 70x135x38mm

1.2 Details

Receiving socket

Transmitting socket

Ultrasonic probe

LCD screen

Calibration block

EN - LD7015

2 WHAT’S IN THE BOX?

• Ultrasonic thickness gauge basic

• Ultrasonic gel 60ml

• Transducer 10mm - 5.0MHz

• Calibration block

3 OPERATION INSTRUCTIONS

• Operation area condition: This gauge can measure all samples which are equal to or bigger

than the transducers surface area.

• Curved surface condition: When materials have a curved surfaces like a boiler wall or tubing,

the curvature radius must be equal to or more than 10mm and the wall thickness must be

equal to or more than 3mm.

• Roughness condition: This gauge is applicable for a wide range of materials. In most cases

the supplied transducer makes very accurate readings. However if the roughness is too big

due to rust etc. an error may occur. In this case please try to minimise the roughness or select

the 2.5MHz transducer. If the transducer is worn-out, please contact your local distributor for a

replacement transducer

• Working temperature condition: Material and sound velocity will change along with

temperature. In normal measurement conditions environment temperature impact can be

ignored. The transducer is made of propylene material. Considering the protection of the

transducer and its precision we recommend a surface temperature of the work piece should

not be over 60oC otherwise the transducer could be damaged.

• Operation temperature: 0 - 40oC

• Relative humidity: <90% RH

• Hardware / Work piece/ Material temperature: < 60oC

• Do not apply on vibrating or erosive material

• Avoid impact and moisture

EN - LD7015

4 PREPARATIONS

1. Switching on the instrument

Connect the probe to the main unit, press ON/OFF to

turn on the instrument. All display signs will light up for

0.5 sec on the LCD screen. Then it will show a value of

0.0mm and 5900 VEL and after that the last registered

sound velocity with selected memory unit. The instru-

ment is now ready for use.

2. Material selection

To select a material please press the VEL button several times to your needed material sign

appears as per below schedule:

Code Material Sound Velocity (VEL)

FS Iron/Steel 5900

AL Aluminium 6320

CP Copper 4700

bR Brass 4430

Zn Zinc 4170

TIN Tin 3320

Pb Lead (Pb) 2400

GL Glass / Stainless Steel 5800

PVC Polyvinylchloride 2390

PMM Acrylic 2730

3. Calibration

If necessary this step should be repeated; Press the“ZERO” key for 2 seconds, after a short time

“CAL”will appear on the display, this indicates the unit is in calibration mode. Put a small amount

of coupling gel on the sample block and then place the probe on the sample block. When the

display shows 4.0mm the calibration is completed. After calibration the sound velocity will

remain the same as previous selected. A calibration should be made the every time the probe or

batteries are replaced. This is very important to make sure measurements will be accurate.

Start screen

5 PERFORM A MEASUREMENT

5.1 Thickness measurement

Put some coupling gel on the material surface, press the ultrasonic probe on the material surface

to measure. Please make sure there is good coupling, which will be indicated with this symbol

appearing on the display.

If this symbol does not appear or ashes it means there is not a good coupling. The reading on

the display is the measured value. After removing the probe, the reading will be held.

5.2 LCD backlight

By pressing this button you will activate the LCD backlight. With each operation the light

will switch on for about 7 seconds. When switching o the gauge the light will also automatically

switch o.

Calibration status Calibration accomplished

Correct coupling Measurement completed

Backlight

o

EN - LD7015

5.3 Automatic power shut down

If the instrument is not operated for over 2 minutes it will automatically switch o.

6 CALIBRATIONS

We recommend annual calibration. For calibration, send the instrument, together with a RMA

form* to TQC Sheen, Molenbaan 19, 2908 LL Capelle aan den IJssel, NL.

*You can download the RMA form here: https://www.tqc.eu/en/service/repairs-calibrations/

6 REPLACING BATTERIES

When the icon ashes, please replace the batteries before taking any new measurements.

Turn the instrument o by pressing the ON/OFF button. Open the battery lid and replace them

with 3 pcs of AAA alkaline batteries.

7 MAINTENANCE

• Though robust in design, this instrument is precision-machined. Never drop it or knock it over

• Always clean the instrument after use.

• Clean the instrument using a soft dry cloth. Never clean the instrument by any mechanical

means such as a wire brush or abrasive paper. This may cause, just like the use of aggressive

cleaning agents, permanent damage.

• Do not use compressed air to clean the instrument.

• Always keep the instrument in its case when not in use.

• We recommend annual calibration

Backlight

o

EN - LD7015

8 DISCLAIMER

The right of technical modications is reserved.

The information given in this manual is not intended to be exhaustive and any person using

the product for any purpose other than that specically recommended in this manual without

rst obtaining written conrmation from us as to the suitability of the product for the intended

purpose does so at his own risk. Whilst we endeavour to ensure that all advice we give about

the product (whether in this manual or otherwise) is correct we have no control over either the

quality or condition of the product or the many factors aecting the use and application of the

product. Therefore, unless we specically agree in writing to do so, we do not accept any liability

whatsoever or howsoever arising for the performance of the product or for any loss or damage

(other than death or personal injury resulting from our negligence) arising out of the use of the

product. The information contained in this manual is liable to modication from time to time in

the light of experience and our policy of continuous product development.

EN - LD7015

Receiving socket

Transmitting socket

Ultrasonic probe

LCD screen

Calibration block

EN - LD7016

1 ULTRASONIC THICKNESS GAUGE PRO LD7016

Ultrasonic thickness gauge specically designed to measure the thickness of metallic and non-

metallic materials e.g. aluminium, titanium, plastics, ceramics, glass and plastics. It can also be

used to monitor all types of pipes and pressure vessels for loss of thickness due to corrosion or

erosion. The gauge is easy to use and, after a simple calibration to a known thickness or sound

velocity, the gauge will give accurate readings to an accuracy of 1%. This unit is not suitable for

cast iron due to its big crystalloid composition.

1.1 Specications

Measuring method : Ultrasonic pulse echo

Measuring frequency : 5MHz / 2.5MHz

Measuring range : 1.20 - 220 mm (steel);

Actual range varies with the type of material measured

Accuracy : +/- (1%H + 0.1) mm, H denotes the measured thickness

Sound velocity : 1000 - 9999 m/s.

Display : LCD

Resolution : 0.1mm

Working temperature : 0 ºC ~ 40 ºC

Power Supply : 3x AAA alkaline batteries (total 5V)

Size : 70x135x38mm

Measuring sound velocity with a given thickness: Measuring range: 1000 to 9999 m/s. When

the given thickness is over 20mm, the accuracy is +/-5%; when the given thickness is less than

20mm, the accuracy is +/- 1 mm/H*100%

1.2 Details

EN - LD7016

2 WHAT’S IN THE BOX?

• Ultrasonic wall thickness gauge

• Coupling gel 60ml

• Probe 10mm - 2.5MHz

• Probe 10mm - 5.0MHz

• Calibration plate

3 OPERATION INSTRUCTIONS

• Operation area condition: This gauge can measure all samples which are equal to or bigger

than the probes surface area.

• Curved surface condition: When materials have a curved surfaces like a boiler wall or tubing,

the curvature radius must be equal to or more than 10mm and the wall thickness must be

equal to or more than 3mm.

• Roughness condition: This gauge is applicable for a wide range of materials. In most cases the

supplied probe makes very accurate readings. However if the roughness is too big due to rust

etc. an error may occur. In this case please try to minimise the roughness or select the 2.5MHz

probe. If the probe is worn-out, please contact your local distributor for a replacement probe.

• Working temperature condition: Material and sound velocity will change along with

temperature. In normal measurement conditions environment temperature impact can be

ignored. The probe is made of propylene material. Considering the protection of the probe

and its precision we recommend a surface temperature of the work piece should not be over

60oC otherwise the probe could be damaged.

• Operation temperature: 0 - 40oC

• Relative humidity: <90% RH

• Hardware / Work piece/ Material temperature: < 60oC

• Do not apply on heavily vibrating / erosive material

• Avoid impact and moisture

EN - LD7016

4 PREPARATIONS

1. Turning on your instrument

Connect the probe with the main unit, press ON/OFF to turn on the instrument. The display

shows a full screen for 0.5 sec with backlight, then a vertical bar is displayed twice circularly,

meanwhile the main display area shows 0000 to 9999 progressively. After that the LCD displays

the last applied sound velocity with registered memory.

2. Sound velocity selection and adjustment

Press“VEL”key to enter the sound velocity interface, press again, you can now select the velocity

data by pressing or the word“VEL”will be blinking on the display. If you need to adjust

the sound velocity, press the“VEL” key once more, the“VEL” and “m/s”will keep blinking. Then

increase or decrease the sound velocity to the number you want by pressing or again. The

data will be automatically stored into the current sound velocity memory unit. After this, press to

conrm new sound velocity and the icons will stop blinking.

3. Calibration

If necessary this step should be repeated; Press the“ZERO” key for 2 seconds, after a short time

“CAL”will appear on the display, this indicates the unit is in calibration mode. Put a small amount

of coupling gel on the sample block and then place the probe on the sample block. When the

Full screen Last applied sound velocity & unit no.

velocity adjustment velocity revision

display shows 4.0mm the calibration is completed. After calibration the sound velocity will

remain the same as previous selected. A calibration should be made the each time the probe or

batteries are replaced. This is very important to make sure measurements will be accurate.

5 PERFORM A MEASUREMENT

5.1 Thickness measurement

Put some coupling gel on the material surface, press the ultrasonic probe on the material surface

to measure. Please make sure there is good coupling, which will be indicated with this symbol

appearing on the display.

If this symbol does not appear or ashes it means there is not a good coupling. The reading on

the display is the measured value. After removing the probe, the reading will be held.

5.2 Sound velocity measurement

To get a read out of sound velocity of the material with a known thickness: Obtain the thickness

of the material by using a micrometer or calliper, then put the probe on the material until a value

appears on the display. Remove the probe and press or to adjust the value to match the

same thickness as measured with the micrometer/calliper. Then press VEL to display the sound

velocity and save the current velocity in the memory unit.

EN - LD7016

Good coupling measurement Measurement accomplished

Calibration status Calibration accomplished

EN - LD7016

5.3 Data storage

Press“MODE”key to enter the data save mode. The display will show the “Thickness and mm”

icons with the rst memory unit (M 1) If the rst memory unit wasn’t registered, the display will

show 0. 0.

Press or to select your desired memory unit(1-10) and press “MODE” again to store.

After selecting your memory unit you can start measuring again. While measuring, the memory

unit will ash and the new measurement will delete the stored value. When your measurement is

completed the last reading will be held again in the selected memory unit automatically. After-

wards the memory unit no. will stop blinking.

5.4 Review the saved data

Press“MODE”, then memory unit no. and stored data will be displayed. You can review the saved

data in unit 1-10 by pressing or , they are read only. By pressing“MODE” again you will

return to the measuring mode.

5.5 Low battery indication

When the following icon ashes, please replace the batteries before taking any new mea-

surements.

Thickness measurement Adjusting the thickness Velocity read out

Review saved data

5.6 LCD backlight and automatic power shut-down

Hold the“ZERO” button pressed for a second and then also simultaneously press the ON/OFF

button. This way the backlight will be activated. Every operation the backlight will turn on for

7sec. until the gauge is switched o again. If the gauge is not operated for over 2 minutes, it will

automatically switch o and the backlight function will be cancelled.

5.7 Measurement tips

1. Cleaning the surfaces

Before making a measurement please make sure dust, dirt rust and grease are removed from the

surface.

2. Decreasing the surface roughness

Too rough surfaces may result in measuring faults or error readings. Please try to smooth the

surface by milling, polishing, lling or a use a high viscosity coupling gel.

3. Rough machined surfaces

The regular tiny texture/slots resulting from rough machining processes may cause errors. Please

follow the method as mentioned at paragraph 3 Operating Instructions “Roughness condition”.

Adjusting the angle between the crosstalk segregating board of the probe (a metal membrane

crossing the detector bottom centre) and linear texture slots (parallel or vertical) may also get

better results.

4. Measuring cylindrical surfaces

When measuring cylindrical surfaces like pipes, oil tubes etc. it is critical to select an angle

between the crosstalk segregating board of the probe and axis of the material to be measured. In

simple terms; couple the probe and material, keep the crosstalk segregating board of the probe

right-angled to the axis of the pipe to be measured. For small pipes two measurements should

be performed, one with the axis of the pipe perpendicular, the other one parallel. The smallest of

the 2 values displayed, should then be taken as the thickness at that point.

5. Complex shaped materials

For complex shaped material measurements please check paragraph 4.7.3., the smallest of the

two readings should in this case be used as the thickness.

6. Non-parallel surfaces

To get a satisfying ultrasonic response, the surface must have got one measuring side parallel to

another side, otherwise the results will be faulty.

7. Material surface temperature inuences

The size and sound velocity of material will change at dierent temperatures. When precision is

critical please make 2 dierent measurements under the same temperature conditions to deter-

mine the correct thickness reading. When making steel measurements with high temperatures,

this method may be used also to get a correct reading.

EN - LD7016

8. High acoustic reduction materials

For materials such as ber, poriferous or big granular, acoustic dispersion will cause energy at-

tenuation which may result in abnormal readings (the reading is less than the actual thickness) In

this case, the material is not suitable for the gauge.

9. Reference sample block

Calibrating the gauge, a given thickness or sound velocity of the material is very important. Cali-

bration needs at least one standard reference sample block. This gauge is provided with a 4.0mm

sample block on the front of the casing. Please check the calibration procedure.

With dierent materials and situations, only one sample block may not be enough to get the

most exact calibration. The more similar sample blocks, the more exact readings will be obtained.

Ideally reference blocks are a group of dierent thicknesses of the same material. When calibra-

tion the gauge with dierent blocks, the variation of sound velocity will be minimised. To get a

most exact measurement, a set of reference blocks is very important.

In most situations using only one reference block will result in a proper measurement. This refe-

rence block must be the same material and thickness as the parts to be tested. The thickness of

the reference block should be read out in micrometers.

When measuring thin materials of which the thickness is close to the minimum limit range of

the gauge, please use a reference block to dene the exact limit of the material (1.2mm for steel

material) Do not measure material from which the thickness is under the minimum limit.

When material consist of a complex alloy in a large size, a block which has a similar material thick-

ness, should be used for calibration.

Forged or casted hardware mostly have dierent inner structures which results in slightly dif-

ferent sound velocities. To reach the exact reading, the reference block most have a similar struc-

ture as the hardware. With common measurements you have to check the sound velocity table

stated in this manual instead of calibrating the gauge with a reference block. However this table

is just for reference, sometimes the sound velocity will be dierent caused by dierent physical/

chemical factors. The sound velocity of mild steel is mentioned in the reference table.

5.8 Accuracy precautions

1. Thin material

When the thickness of the material is less than the minimum limit, any ultrasonic thickness

gauge will give faulty measurements. Use the sample block comparing method to get a mini-

mum limit of a material. When measuring thin material, an error may occur (the thickness reading

is two times the actual thickness) To prevent wrong readings with thin material, double check the

minimum limit of the material.

EN - LD7016

2. Stained/rusted material:

Stained or rusted surfaces on the contra side will result usually in wrong readings. Sometimes a

small stained spot is hard to nd. Be careful while measuring known rust spots/suspicious areas

or use sound insulation board-celotex to locate the spots in dierent test angles.

3. How to determine velocity of various materials

A faulty reading will be obtained, when measuring the material with a velocity calibrated with

a previous material. So a correct velocity should be obtained. The faulty reading may also result

from the dierence between the actual velocity of the calibrated value.

4. Wearing of the probe

Because the probe is made of propylene, long term use will cause the surface to roughen, this

will result eventually in wrong readings. Please polish the surface with sand paper or whetstone

to assure the smoothness. If the readings are still unsteady, the probe should be replaced by a

new one.

5. Multilayer-composite material

It is impossible to read out the thickness of uncoupled multilayers as the ultrasonic wave cannot

go through into the uncoupled space. Furthermore, the sonic wave cannot go through in to the

composite material at an even speed. So ultrasonic reect principles cannot be applied for mea-

suring multilayers and composite material.

6. Inuences from oxidized materials

For some metals such as aluminium, a layer of oxide can be generated on the surface. Although

the oxidised layer combines with the substrate tightly, the sonic wave does need to travel

through 2 dierent materials so it will lead to incorrect readings. With a thicker oxidised layer,

more deviation will occur. Please calibrate the instrument with a reference block of the same

material as the sample. Obtain the thickness of the sample block by using a micrometer/calliper.

7. Any abnormal readings

An operator should be capable to distinguish any abnormal readings as a result of erosive, recess

surface, incorrect calibration sample blocks or the inner aw of materials.

8. Coupling gel

Coupling gel causes the high frequency ultrasonic waves transmitting between the probe and

material. Choosing incorrect coupling or wrong operation may cause errors or pour coupling

which results in failure to measure. The coupling gel should be used in a proper way, normally,

a small drop of gel is sucient. It is important to use proper coupling gel, low viscosity gel (as

supplied) is suitable for smooth surfaces. For rough, vertical, aluminium surfaces, high viscosity

liquids like glycerine and lubrication grease is applicable. These kinds of agents are normally

available in the local market but you can buy them also from a local distributor.

EN - LD7016

Sound Velocity table:

Material Velocity m/s Material Velocity m/s

Aluminium 6320 Acetate resin 2670

Zinc 4170 Phosphor 3530

Silver 3600 Turpentine 4430

Gold 3240 Glass 5440

Tin 3230 Incoloy alloy 5720

Iron/steel 5900 Magnesium 6310

Brass 4640 Monel alloy 6020

Copper 4700 Nickel 5630

SUS 5790 Steel 4330 (mid) 5850

Acrylic resin 2730 Steel 330 5660

Water (20°C) 1480 Titanium 6070

Glycerin 1920 Zirconium 4650

Soluble glass 2350 Nylon 2620

6 CALIBRATIONS

We recommend annual calibration. For calibration, send the instrument, together with a RMA

form* to TQC Sheen, Molenbaan 19, 2908 LL Capelle aan den IJssel, NL.

*You can download the RMA form here: https://www.tqc.eu/en/service/repairs-calibrations/

7 REPLACING BATTERIES

When the batteries are low the battery icon will appear on the display. Turn the instrument of by

pressing the ON/OFF button. Open the battery lid and replace them with 3 pcs of AAA alkaline

batteries.

8 MAINTENANCE

• Though robust in design, this instrument is precision-machined. Never drop it or knock it over

• Always clean the instrument after use.

• Clean the instrument using a soft dry cloth. Never clean the instrument by any mechanical

means such as a wire brush or abrasive paper. This may cause, just like the use of aggressive

cleaning agents, permanent damage.

• Do not use compressed air to clean the instrument.

• Always keep the instrument in its case when not in use.

• We recommend annual calibration

9 DISCLAIMER