AND AD-3255, Instruction Manual

Page 1: ...Ultrasonic Thickness Gage 1WMPD4003292A ...

Page 2: ...e written permission of A D Company Limited The contents of this manual and the specifications of the instrument covered by this manual are subject to change for improvement without any notice and obligation on the part of the manufacturer 2017 All rights reserved ULTRAGEL II HIGH Z and SONO are registered trademarks of the Magnaflux company ...

Page 3: ...unction 14 4 2 3 Switching the Display Resolution 15 4 2 4 Switching Measurement Modes 15 4 3 Sound Velocity Calibration 16 4 3 1 Use of Sound Velocity Calibration 16 4 3 2 Calibration of Known Sound Velocities 17 4 3 3 Calibration of Unknown Sound Velocities 17 4 3 4 Two point calibration for Sound Velocities 18 4 3 5 Initialization of Sound Velocities 19 4 3 6 Pre installed Sound Velocities 20 5...

Page 4: ... a hazard alert mark Operation is prohibited Others Caution An important description for proper use of the instrument Note The information that helps users operate the instrument 1 1 2 Cautions Concerning Safety Indications Caution Repair Only authorized individuals may open the case and repair the AD 3255 Loss of data or malfunctions may result from opening the case Contact your local dealer or o...

Page 5: ...eme temperature change or impact Do not immerse the transducer in water or oil Avoid contaminating the transducer connector with water oil and dust Use the accessory strap as needed Example Tie the strap to the main unit to avoid losing the test piece Tie the strap to the main unit to prevent the set from being stored in a piecemeal fashion Do not pull excessively on or sharply bend the transducer...

Page 6: ... equipped with a multimode feature The multimode feature Pulse Echo Mode Use this mode for basic measurements or detection of flaws cracks and pits Echo Echo Mode When measuring the thickness use this mode to eliminate errors concerned with measuring coating and paint thickness Use the optional transducer AD 3255 04 The sampling mode Single Point Mode This mode can measure single point thickness w...

Page 7: ...e The AD 3255 can store user settings and calibration data The battery indicator indicates the battery power The AD 3255 is equipped with an automatic power off function When no operation is performed for approximately 5 minutes the display blinks for 20 seconds and then the power is turned off The AD 3255 can measure the thickness of other metal plastic ceramics composite materials epoxy resin gl...

Page 8: ...nd consult your local dealer Use the carrying case for transport Packing list is as follows Main unit 1 Test piece is equivalent to the thickness of 4 00 mm AD 3255 01 1 Transducer for the pulse echo mode AD 3255 02 1 Carrying case 1 Empty bottle for the couplant 1 Strap 1 Instruction manual This manual 1 Main unit Test piece Bottle Strap Transducer for the pulse echo mode Carrying case This manua...

Page 9: ...ransmitter Transducer connector Receiver Battery cover which covers the battery box in which two alkaline batteries LR6 AA can be installed Strap holes Switches When pressed the buzzer sounds Display Thickness data and settings are displayed References Transducer for the pulse echo mode Plugs ...

Page 10: ...he setting mode Selects a measurement mode in the measurement Single point mode Indication Measures the thickness in the space where the transducer is placed on the material surface Sampling rate 7 times sec Scan mode Indication Displays a minimum thickness from the measured data in the area where the transducer has been moved Sampling rate 16 times sec Decreases the parameter in the setting mode ...

Page 11: ...layed switches cannot be operated Coupling Indication The AD 3255 can indicate the coupling state between the transducer and material surface The symbol indicates stable and measurable contact The blinking symbol indicates unstable and weak contact When the measurement is complete the buzzer sounds Units The units of thickness mm or sound velocity m s are displayed The unit in is not displayed Bat...

Page 12: ...D 3255 pii Turning off the AD 3255 ___ __ _ _ pitt pitt pitt pitt Initializing sound velocity or when changing display resolution pitt Switch response pitt Measuring thickness Error Code Battery power has been consumed Contact your local dealer for any error other than error code displayed above ...

Page 13: ... can connect either the transmitter plug or receiver plug Clean the plug if couplant is present Step3 Prepare the Couplant Prepare the couplant using the bottle Step4 Prepare the Test Piece Prepare the accessory test piece with an equivalent thickness of 4 00 mm Put the couplant on the surface of the test piece Step5 Prepare a Material Sample Piece Prepare a sample piece to measure the thickness A...

Page 14: ...y for the test piece Select it using the switch from pre installed values or using the switch and switch if necessary Press the switch to store it Step3 Specify the Transducer if necessary Press the switch to display the current transducer Specify the using the switch and switch Step4 Calibrate the Zero Point Contact the transducer to the surface of the test piece coated with couplant The calibrat...

Page 15: ...he transducer to the surface of the material The indicator is displayed and the thickness is measured Step6 Turn off the Main Unit Press the switch to turn off the main unit The buzzer sounds pii Thickness Material Transducer Version Turn off ...

Page 16: ...nstalled values or using the switch and switch if necessary Press the switch to store it Step2 Specify the Transducer Press the switch to display the current transducer Specify the using the switch and switch AD 3255 02 Accessory AD 3255 03 Option AD 3255 04 Option Not used Step3 Calibrate the Zero Point Contact the transducer to the surface of the test piece coated with couplant The calibration i...

Page 17: ...e switch is pressed in the measurement mode This mode can display a minimum value from the thickness in the area where the transducer has been moved Sampling rate 16 times sec In this mode any brief interruptions example a week contact no couplant area etc less than 2 seconds in the signal will be ignored When the blinking symbol is displayed and the contact of the transducer is lost for 2 seconds...

Page 18: ...is the simplest and is commonly used as the calibration procedure that can optimize the linearity in a wide range The method to input the sound velocity using numerical switches Refer to 4 3 2 Calibration of Known Sound Velocities The method to calculate the sound velocity based on known thickness of sample piece Refer to 4 3 3 Calibration of Unknown Sound Velocities The two point calibration allo...

Page 19: ...known Step １ Perform the Probe Zero Function Perform the 4 2 2 Probe Zero Function Step ２ Measure the Thickness of Sample Piece Apply couplant to the surface of the sample piece Press the transducer against it The thickness value is displayed Remove the transducer from the surface after the measurement Step ３ InputtheThicknessValue Press the switch The mm blinks Input the thickness value using the...

Page 20: ...ness value of the first point is displayed Remove the transducer from the surface after the measurement Step3 InputtheValueoftheFirstPoint Press the switch The mm blinks Input the value of the first point using the switch and switch Press the switch to display of next step Step4 MeasuretheThicknessoftheSecondPoint Apply couplant to the second point of the sample piece Press the transducer against ...

Page 21: ...again so as to exit the calibration mode and perform the measurement with this range 4 3 5 Initialization of Sound Velocities Press the switch to turn on the main unit while pressing and holding the switch after turning off the main unit Release the switch when the sound velocity is displayed The 5920 m s is set to the sound velocity after the initialization Updated velocity Thickness or ...

Page 22: ...stics of the substance 5920 m s Iron Accessory test piece 6260 m s Aluminum m s The latest sound velocity that is stored in the main unit 2720 m s Acrylic resin 4300 m s Brass 4700 m s Copper 5630 m s Nickel 5740 m s Stainless steel Step1 Select the Sound Velocity Press the switch twice in the measurement Select a sound velocity using the switch Press the switch to store a new sound velocity Twice...

Page 23: ...of the battery or a leakage from the battery Dispose of the battery properly in accordance with the local regulations concerning environmental protection Keep the battery out of reach of babies or young children 5 2 Transducer Probe Zero Function We recommend performing this function to maintain the accuracy of the thickness whenever measuring Appropriate Transducer It is an important to select th...

Page 24: ...requency is the better choice to detect the exact location of flaws cracks or pits The State Roughness and Unevenness of a Surface Material shape and the roughness of its surface are causes of measurement failure It is difficult for ultrasonic waves to penetrate uneven surfaces and will result in unstable measurements or poor reliability The surface whose thickness is to be measured should be clea...

Page 25: ...d on the kind of ultrasonic wave and the direction of travel Shape of the Transducer The appropriate transducer should be selected in accordance with the geometric shape of the measurement area In this case it is necessary to select the size of the transducer Connect the transmitter plug and the receiver plug to the coaxial connectors on the main unit The plugs can be connected to either the trans...

Page 26: ...The direction of the transducer is important when measuring the wall thickness of a pipe If the diameter of the pipe is more than approximately 10 cm it is necessary to match the direction of the acoustic barrier gap of the transducer to the perpendicular direction right angle of the long axis direction The measurement of narrow pipes uses two direction measurements One of the directions is perpen...

Page 27: ...eflection of the ultrasonic wave If these effects exist the thickness value would be less than the actual thickness On the other hand should air gaps or pockets exist in the material their existence would be obvious as obtaining the correct measurement value will not be possible Measurement through Paint and Coating The sound velocity is remarkably different when a coating exists For example A cas...

Page 28: ...easured In this case the thickness value is 2 times that of the correct thickness Fully understand these phenomena when using this thickness gage 5 4 Couplant Function of the Couplant In order to couple the ultrasonic wave between the transducer and the material it is necessary to fill the surface with couplant Incompressible fluid Typical couplants are machine oil glycerin water and commercial co...

Page 29: ...ignal The ultrasonic thickness gage measures the time length between T pulse and Echo B and deducts a delay time of the delay material and allows the thickness to be converted and displayed The calculation formulas are as follows H The thickness of the material v The sound velocity of the material t The time between inputting the ultrasonic wave and reflecting it at the bottom and receiving it as ...

Page 30: ...d velocity m s Water 20 C 1480 Natural rubber Soft rubber 1550 Polyethylene 1900 Lead 2170 Vinyl chloride 2300 Epoxy resin 2500 to 2800 Acrylic resin 2720 Tin 3230 Gold 3240 Cast iron 3500 to 5600 Silver 3600 Zinc 4170 Brass 4700 Copper 4700 Quartz glass 5570 Nickel 5630 Teflon 5710 Crystal 5750 Stainless steel SUS304 5790 Steel 5870 to 5950 Iron 5920 Titanium 5990 Aluminum 6260 ...

Page 31: ...sducer AD 3255 03 1 0 to 300 0 mm 5 MHz transducer AD 3255 04 2 0 to 300 0 mm Echo echo mode 5 MHz transducer AD 3255 04 4 0 to 30 0 mm Measurement accuracy Range 00 8 to 50 0 mm 0 1 mm 0 5 50 1 to 300 0 mm 0 1 mm 1 5 The operation temperature range 5 to 40 C The range of the sound velocity 1000 to 9999 m s Display range 0 65 to 600 0 mm Display resolution 0 1 0 01 mm The accuracy depends upon the...

Page 32: ...has been consumed Automatic power off function When left idle for approximately 5 minutes the display blinks for 20 seconds and then the power is turned off Accessories 7 MHz transducer 1 piece Test piece is equivalent to the thickness of 4 00 mm 1 piece Carrying case 1 piece Empty bottle for the couplant 1 piece Strap 1 piece Instruction manual This manual 1 book Options and Accessories AD 3255 0...

Page 33: ...isplay symbol Frequency Transducer element Range Cable Use Minimum diameter Wall thickness AD 3255 03 Option 5 MHz 10 mm 1 0 to 300 0 mm Steel Approximately 85 cm Thick object pulse echo mode 20 mm x 3 0 mm Type Display symbol Frequency Transducer element Range Pulse echo mode Echo echo mode Cable Use Minimum diameter Wall thickness AD 3255 04 Option 5 MHz 10 mm 2 0 to 300 0 mm 4 0 to 030 0 mm App...