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2Flow RM130 Instruction Manual

Made by: 2Flow
Type: Instruction Manual
Category: Measuring Instruments
Pages: 24
Size: 1.76 MB

 

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Ultrasonic Thickness Gauge

Instruction Manual 

 


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Contents

Before use 

     

Operation instructions

     

Measurement tips-------------------------------(14)

Precautions for accuracy---------------------(17)

Maintain and warranty-------------------------(19)

Table of sound velocity------------------------(21)    

Before measurement---------------------------------(06)

--------(08)

--------------------------------(09)

-------------------------------(10)

-(11)

-----------------------------------(13)

Thickness measurement---------------------

Sound measurement

Thickness alarm set-up

Thickness data storage/record/delete------------

Other features-------

 Check-up-----------------------------------------------(01)

 --------------------------------------------(02)     

S

 ------------------------------------------- (03)

Diagram of the unit ------------------------------------(04)

Introduction

pecification

 


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-01-

1PCS

1PCS

1PCS

1PCS

1PCS

3PCS

1PCS

1PCS

1PCS

Ultrasonic Thickness  Gauge

10 Transducer (5KHz)

Coupling agent (50ml)

4mm Sample block

1.5V AAA  Alkaline battery

English Instruction Manual

Aluminium Packing Box

Optional accesseries transducer:

Transducer (5KHz)

10 Transducer (2.5KHz)

Check-up

1. Before use

     Carefully unpack your kit and ensure that you have 
the following items. In case that any item is missing or 
if you find any mismatch or damage, promptly contact 
your dealer.

 


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-02-

Introduction

1).Introduction
     This unit is an intelligent  handheld product, which adopts 
     ultrasonic measuring principle, and is controlled by micro 
     processor, provides quick and precise measurement of 
     thickness for most of industrial material. This unit is widely 
     used in various precise measurement for different hardw-
     are /parts in industrial realm; one of its important applica-
     tion is to monitor the level of thickness-decreasing during 
     operation of various and pressure container. Diffusely 
     applied in manufacture fields, metal processing, and 
     commercial inspection.
2).Scope of application
     This unit is suitable for measuring materials that are good 
     ultrasonic conductor such as metal, plastic, ceramic, 
     glass etc., as long as the measured part in two parallel 
     surfaces for measurement of thickness. This unit is not 
     suitable for cast iron due to its big crystalloid composition.
3).Features and functions
         
         
         
         Preset 
         
         
         
         
         
         

Auto calibration to assure the accuracy

Sound velocity measurement: with a given thickness to
measure the sound velocity to improve accuracy 

12 sound velocities for different material

Coupling status indication
12 thickness measurement data store and recall
Thickness alarm setup
Backlight display
Low battery indication

Auto power off 

         Metric / Imperial selection

 


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Specification

-03-

. Measuring range: 1.00 to 300.0mm(steel)

. Accuracy:

(1%H+0.1mm) 

        denotes the measured thickness

. Working frequency: 5MHz 

. Resolution:0.01mm(1.00 to 99.99mm)

                          0.1mm(100 to 300mm)

. Minimum limit for tube measuring steel

:

                         

15*2.0mm(

6mm transducer)

                         

 20*3.0mm(

10mm transducer)

. Sound velocity range:1000 to 9999m/s

  Thickness

20mm, accuracy of velocity:

1mm/H

100%

  Thickness

20mm

, accuracy of velocity: 

5%

. Operating environment : 

             Operation temperature: 0 to 40

 

             Temperature of workpiece:    < 6 0   

                            Relative Humidity:  <90%

          Do not  apply in  violent vibration  / erosive  material

    Avoid impact and humidity

. Power supply:1.5V  AAA * 3 PCS

. Operation current: 35mA (with back light on)

. Size: 72*29*146mm

. Weight:223g

 


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-04-

Ultrasonic Thickness Gauge

VEL

DEL

ALARM

RECALL

ENTER

CAL

GM130

INCH

. LCD display         
. Keypad
. Sample block       
. Battery compartement (rear case)
. Transducer           
+

Receive socket

. Trasimit socket / 

Diagram Of The Unit

1). Main Body:

 


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Control Panel

VEL
DEL

ALARM

RECALL

ENTER

CAL

INCH

VEL
DEL

ALARM

RECALL

ENTER

CAL

INCH

3).LCD display

. Coupling indicator
. Transducer Frequency
. Back light icon  
. Battery power
. Thickness unit
. Sound velocity indicator 
. Thickness alarm
. Sound velocity unit
. Sound velocity reading
. Velocity stored unit
. Thickness reading

-05-

2).  Keypad
          
       --  ON/OFF
           
       --   Alarm set-up/Data recall
             
        -- Velocity set-up/ Select / delete
           Stored data 
           
        -- Enter / Calibration
 
       -- Velocity / Thickness /Alarm adjust
         
       -- Velocity / Thickness / 
             Alarm adjust , Backlight ON/OFF

   

 


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-06-

Before Measurement

Ready to use

VEL
DEL

ENTER

CAL

Velocity selection

2. Operation Instruction

1). Connect the transducer with the unit, then press        to 
      turn on. LCD with full screen display with back light for 
      0.5 second, then LCD display the last applied sound 
      velocity. Now the unit is ready for use. 

2).Sound velocity selection
     Press         twice to entre sound velocity adjustment with
              icon blinking, press up or down key to select your 
     desired velocity, to finish the selection by press        .

 


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-07-

ENTER

CAL

VEL
DEL

ENTER

CAL

3).Sound velocity adjustment
     Press         onece to entre velocity adjustment with stored
     velocity unit blinking, press up or down key to adjust the
     velocity to obtain desired value, then press        to finish 
     the adjustment. The revised velocity will be saved into the 
     unit.

4).Calibration
     On normal status, press        for 3 second, then CAL 
     symbol shows in LCD with 5900 m/s velocity and 4.00 mm 
     display. 
     Use the standard sample block for calibration, until CAL 
     symbol disappeared, press up or down key to  entre mea-
     surement mode.

Ready to calibration

Ready to use

After adjustment

Before adjustment

 


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-08-

Thickness Measurement

     Put few coupling agent on the area to be measured to 
couple the transducer with the hardware/workpiece. LCD 
will display the thickness reading. During measurement,            
indicates a well coupling, if the icon flashed or not shows 
means a poor coupling, after remove transducer, the reading 
will hold without      . 

Well coupling 
measurement

REMARK:

1).To select / adjust the velocity as the table of sound velocity 

     for thickness measurement. But the actual velocity in the 

     hardware / workpiece will slightly different, in this case the 

     reading of thickness not very accurate. 

2).Select a sample block with same material to the hardware

     or workpiece to be measured to read out the velocity. Then 

     apply this velocity for thickness measurement. In this way 

     the reading of thickness much more accurately.

Measurement 
accomplished

 


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-09-

Thickness 

measurement

Velocity 

measurement

Velocity Measurement

ENTER

CAL

     With a given thickness to read out  velocity of material: 
Obtains the thickness of material by using vernier caliper / 
micrometer. Then couple the transducer with that sample 
material until a thickness displays, press up or down to adjust 
the reading match the thickness by caliper/micrometer, then 
press        to display the velocity and save in current velocity 
memory unit.

 


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Thickness Alarm Set-up

ALARM

RECALL

ENTER

CAL

-10-

     Press         will entre LOW thickness alarm set-up, press 
up or down key to adjust the limit, then press        to confirmed.
Then it will turn into HIGH thickness alarm set-up, press 
to save the setting as default alarm. During measurement, if
the thickness over/under the setting limit, BIBI sounds and 
HIGH/LOW will indicates for alarming. 

Low Limit set-up

High Limit set-up

ENTER

CAL

 


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ENTER

CAL

Thickness Data Storage/record/delete

ENTER

CAL

ALARM

RECALL

ENTER

CAL

-11-

Memory full

Data store

Data recall

Vacant Memory 

1). Thickness data storage
      During measurement, press         once to save the thick-
ness reading, if a FUL symbol show in the LCD that indicates 
the memory is full.

2). Store thickness data record
      Press        for 3 seconds to entre data record mode, press
      up or down key to review M01 to M12 stored data. 
      If the memory unit is vacant, LCD will display ----, press
             again turn to normal status.

 


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VEL
DEL

VEL
DEL

-12-

3).Data delete
     (1). Press         for 3 second to clear all stored data, 
            symbol will show on LCD.
     (2). In data recall mode, press        to delete current 
            stored data. After delete data, the vacant memory will 
            display---- on the LCD. 

Clear all data

Delete current data

 


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Other Features

INCH

-13-

1). Low battery indication
      When battery power down to 3.3V 0.2V, the low battery 
      icon           will display, please replace the batteries for 
      further measurement.
2). Back light selection
      Keep pressing the        to turn on (not release), press
      to chose backlight ON/OFF. Then release        .
      If backlight ON is Chosed, any operation will active the 
      backlight. The backlight will be turned off in 10 seconds 
      without operation.
      The backlight status will be memorized, until you change 
      it.
3) Metric / Impetric selection

Keep pressing the          to turn on (not release), press           

      to close your desired unit. Then release          .
      The chosen unit will be memorized until you change it!
4). Turn off: 
      Press        to turn off/on the unit. The unit will be turned 
      off in 1 minute without any operation.

Remark: 
Press up or down key to adjust/select different velocity or 
thickness.

 


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-14-

3. Measurement tips

1). Cleaning surface
      Before measuring, the dust, dirt, rusting and grease etc 
      that adheres on the hardware/workpiece must be removed 
      off and cleaned.
2). Decreasing the roughness of surface
      Too rough surface may result in measure error/ fault 
      reading. Please try to make the surface smooth by milling, 
      polishing, filling or using high viscosity coupling agent. 
3). Rough machining surface
      The regular tiny texture/slots resulting form rough mach-
      ining process may cause error, and the compensation 
      method is the same as in 3.2, adjusting the angle between 
      the crosstalk segregating board of the transducer a metal 
      membrane crossing the detector bottom centre and linear 
      texture/slots (parallel or vertically) may also get a better 
      result. 
4). Measuring pipe and tubing
      When measuring cylindrical parts to determine the thick-
      ness of the pipe wall, orientation of the transducers is 
      important. If the diameter of the pipe is large than appro-
      ximately 4 inches, measurements should be made with 
      the transducer oriented so that the gap in the wearface is 
      perpendicular (at right angle) to long axis of the pipe. For 
      smaller pipe diameters, two measurements should be 
      performed, one with the wearface gap perpendicular, 
      another with the gap parallel to the long axis of the pipe. 
      The smaller of the two displayed values should then be 
      taken as the thickness at that point.    
5). Complex shape material
      For complex shape material measurement, please refer 
      to the 3.4, the smaller of the two reading should then be 
      

 


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-15-

     taken as the thickness.

6). Non-parallel surface

      To get a satisfying ultrasonic response, the surface must 

      have its one measuring side parallel with another, other-

      wise will obtain wrong result. 

7). Influence of the material temperature

      The size & sound velocity of material will change with the 

      temperature, when the precision is critical, please make 

      measurement in 2 samples of the material under the same 

      temperature to determine the proper reading resulting 

      from the temperature. When taking measurement for st-

      eel parts in high temperature,  this method may be adop-

      ted to obtain the correct reading.

8). High acoustic reduction material

      For materials in fiber, poriferous or big granular, acoustic 

      dispersion will cause the energy attenuation that may 

      result in abnormal readings(practically the reading less 

      than the actual thickness), in this case the material is not 

      suitable for the unit. 

9). Reference sample block

      For calibration for the gauge, a given thickness or sound       

      velocity of the material is very import. Calibration needs 

      at lest one referring standard sample block. This gauge 

      is provided with a 4.0mm sample block, please check for 

      calibration operations. 

      In different material & situation, only one sample block 

      may not satisfy every calibration. The more similar sample 

      block, the more exact reading obtained. Ideally, referring 

      block is a group of different thickness and same material, 

      

 


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-16-

      by calibrating to the referring block, the effect of variation 

      of sound velocity will be minimized. To get the most exact 

      measure, a set of referring block is very important.

      When measuring thin material which thickness close to 

      the minimum limit range of this unit, please use a referring 

      block to define exact limit of this material. Do not measu-

      ring the material that the thickness under the minimum limit. 

11). Selection of transducer

ITEM

Characteristic

Range

Operation 
temperature

10). The wear of the transducer will effect the measurement, 
        when below situation happen, please replace the 
        transducer:
        A. only display one reading when measured different 
             thickness;
        B. reading display without take measurement.

General-purpose

Thin workpeice

General-purpose

1.00mm to 300.0mm(steel)

1.00mm to 50.0mm(steel)

1.00mm to 300.0mm(steel)

-10 to 60

-10 to 60

-10 to 60

  1 0 m m  

  6 m m  

  1 0 m m  

 


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4. Precautions for accuracy

-17-

1). For very thin material
      Any ultrasonic thickness gauge, when the thickness of 
      the material to be measured is less than the minimum limit 
      the fault reading will occurs. Using sample block compare 
      method to get a minimum limit of this material.
2). For stained, rusting surface
      The stained/rusting surface on the contra side will occurs 
      the ruleless wrong readings. Sometimes a small stained 
      spot is hard to find out. Take care for measurement while 
      measuring the known rusting spot/suspicious area. 
      Or using sound insulation boardcelotex to locates the 
      spot in different testing angles.
3). Identify different velocity with vary material
      A fault reading would obtains, when measuring the hard-
      ware with the velocity calibrated by prior material. So a 
      correct velocity should be adopted. The fault reading may 
      also result form the difference between the actual velocity 
      with the calibrated value. 
4). Abrasion fo the transducer
      Because the transducer is made of propylene, long period 
      use will cause the surface of transducer became more 
      rough which will decline the sensitivity lead to the wrong 
      reading. Please polish the surface with sand paper or 
      whetstone to assure the smoothness and parallel. If the 
      reading still unsteady, the transducer should be replaced 
      with new one.
5).  ZERO function
      ZERO(calibration) is used to calibrate the unit with the 
      standard block on the panel, do press this key for calibr-
      ation with other materials or will the wrong measuring 
      will take place.
6). Multilayer / composite material
      It is impossible to read out the thickness of the uncoupled 
      multilayer for the ultrasonic wave can not go through the 
      uncoupled space. Further more, the sonic wave cannot 
      travel in the composite material at an even speed, so ult-
      

 


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-18-

      rasonic reflect principle cannot be applied to measure 
      the multilayer/composite material.
7). Influence from the oxidized surface
      For some metals, such as aluminum a layer of oxide being 
      generated on their surface. The oxidized layer combined 
      with the substrate tightly, but the sonic wave travel within 
      2 different material which will lead to error reading, the 
      more oxidized layer the reading will be more tolerant. 
      Please calibrated the unit with the sample block that pick 
      up along the hardware to be measured, and obtain the 
      thick of sample block by using micrometer.
8). Abnormal reading
      A seasoned operator should be capable to distinguish the 
      abnormal reading, practically result from rusting, erosive 
      recess surface / incorrect calibrate sample block/ the 
      inner flaw of material. 
9). Choose and using coupling agent
      Coupling agent serves  the high frequency ultrasonic 
      wave transmitting between the transducer to the hardware. 
      Choose incorrect agent or wrong operation man cause 
      error or poor coupling which lead to failure of measuring. 
      The coupling agent should be used in proper way, typic-
      cally, a single droplet of agent is sufficient.
      It is important to use proper coupling agent, low viscosity 
      agent(the provided agent / machining oil) is suitable for 
      smooth surface. For rough / veritcal / aluminum surface, 
      high viscosity agent like glycerin and lubrication grease 
      is applicable. All kinds of coupling agent is available in 
      local market, you can buy it form local distributor as well.

 


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5. Maintain And Warranty

-19-

1). Maintain
     (1). Battery replacement
     A).When low battery icon is showed, please replace the 
          batteries.
         (A). Press         to turn off.
         (B). Open the battery door properly.
         (C). Replace the low power batteries by new batteries.
     B). When the gauge is not use for long period, please take 
          out the batteries.
2). Protection of transducer
      Because the wear face of transducer is propylene mate-
      rial which easy to be scratched. During taking measure-
      ment on rough material, please using the transducer in 
      gentle motion. The temperature of the hardware should 
      not over 60 , otherwise it will cause damage on the tra-
      nsducer. Adhering oil, dust on the wear face will speed 
      up aging of transducer and lead to rupture. Clean the lead
      -wire & transducer after use.
3). Cleaning the cabinet
      Do not use solvent/alcohol for cleaning which erode the 
      cabinet & LCD window, brush and sweep only with a mo-
      ist cotton cloth.
4). Cleaning the sample block
      Because of coupling agent should be put on the sample 
      block during calibration, after use the sample block sho-
      uld be cleaned for preventing rust. In higher temperature 
      environment, be sure protect the block form the droplet of 
      water. If the gauge is not use for a long period, please 
      apply some antirust on the sample block.
5).  Avoid shocking/impact. Do not store the unit in high 
      humidity environment.

 


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-20-

2. Warranty:
    1).When the tolerance is over than stated in this manual, 
         please refer to the 3, 4, 5 chapter, in this manual.
     2). Please contact us or distributor if the following occurs:
           A. Component being destroyed, enable to measure.
           B. Abnormal LCD display.
           C. The tolerance is too big in proper operation.
           D. Malfunction of keypad.
     3). This gauge is a advanced technology product, the 
           repairing only by technician authorized by us, do not 
           try any alterations or repair attempts.
    4). Warranty policy:
          Please fill the warranty card with your cachet/chop after 
          purchasing this products, the warranty period for rep-
          aired is 12 months form the date of original purchase. 
          During warranty period, product must be  returned with 
          the invoice(copy) and warranty card to our customer 
          service department. The product will not be warranted 
          which without the warranty card.
          Over warranty period, any repairing / maintenance will 
          charge the fee on the buyer in standard rate by local 
          distributor. The standard rate is not including the acc-
          essories which not packing in standard package(For 
          example, abnormity transducer, lengthen lead-wire, 
          special software) .
          We disclaims any liability due to: transportation dama-
          ges; incorrect use or operation; manipulation, alterati-
          ons or repair attempts; without warranty card, invoice.
     5). Non-warranty list:
          LCD, battery, probe, sample block, plastic case, 
          coupling agent

 


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-21-

Sound velocity of common materials

Speific Declarations:
    1).The product design and the manual updating, repairing
         by technician authorized by us, do not try any alternations
         or repair attempts.
     2).Dispose of battery should in accordance with local laws
         and regulations.

6. Table of sound velocity

Aluminum

Zinc

Silver

Glod

Tin

Iron/Steel

Brass

Copper

SUS

Acrylic resin

Water

20

Glycerinl

soluble glass

2670

3530

4430

5440

5720

6310

6020

5630

5850

5660

6070

4650

2620

Acetate resin

Phosphor bronze

Turpentine

Glass

Incoloy alloy

Magnesium

Monel alloy

Nickle

Steel 4330

mild

Steel 330

Titanium

Zirconium

Nylon

6320

4170

3600

3240

3230

5900

4640

4700

5790

2730

1480

1920

2350

Material

Velocity(m/s)

Material

Velocity(m/s)

 


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Version: 130-EN-0