EMAT Ultrasonic Thickness Gage

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This is a portable electromagnetic ultrasonic abbr as  EMAT thickness gauge to be used without couplant or direct contact on materials ofmetal or magnetism based on electromagneticacoustic transduction

The main difference of this technology is that the ultrasonic waveis generated directly in the tested object

The principle of the action of EMA transducers is based on theexcitation and reception of ultrasonic waves by induction on the surface of anelectrically conductive object of alternating and constant magnetic fields TheEMAT inductor through which a highfrequency current pulse flows creates aneddy current in the surface layer of the metal As a result of the combinedeffect of the eddy current and the polarizing field Lorentz forces arisewhich ensure the excitation of ultrasonic oscillations of the correspondingtype Depending on the design parameters of the inductor and the orientation ofthe polarizing field shear SH waves of radial or linear polarization an ovalor rectangular inductor are excited during the monitoring process

Due to naffectedness by surface of the object it can be appliedto those with rust oxide layer or coating like oil pipe or aircraft partssaving the effort to clear them off Angle shift of the probe has no effect onthe result with the available gauge range 2300mm and the precision up to 001mmThis instrument can also work on hot objects such as forged pieces radiatorsand heat exchangers assisted by necessary kittings supplied by the manufacturerTherere optional functionalities like BScan RS485 BUS networking GPRSwireless communicating and SMS for the users to realize their modern dreams onNDT instruments

• Metallurgy
• Aerospace
• Pressure Vessel
• Thermal Circulation
• Shipbuilding
• Machinery
• Construction
• Power Generation
• Nuclear Power
• Refrigeration

• To gauge thickness of metal ormagnetic objects with rough surface that might cause poor coupling for pureultrasonic transduction
• To get precise thickness dataof metal part beneath coated layer, such as rust, oxide or artificial coatingmaterial. Oil pipes, aircraft parts
• To work under special situation that theres air gap or some obstacle stuck between the transducerand the metal object.
• As an solution to thickness gauging on objects of high temperature without loss of data and damage to thetools (transducers & instrument) and the operator forged pieces, radiators, heat exchangers (up to 300 at-and-away: up to 600)
• to make the job of gauging go on under severely cold weather (lowest to -40)

Standard	EN 12668-1 compliance
Measuring range	1.0 - 300.0mm
Temperature range of work pieces	-40-300
Display	4.3 industrial-leveled TFT color LCD with 800 x 480 WVGA resolution
Excitation Pulse Intensity	350 Vpp
Sampling Frequency / Bits	160MHz/10Bit
Bandwidth Range	300kHz x 5MHz
Rectification	Positive half wave, negative half wave, full wave and RF
Range Adjustment Step	1mm (Transverse wave)
Gain	Total attenuation of 110dB, step as 0.1, 2.0 and 6.0
Distance from test object	3mm
Horizontal Linearity Error	0.4%
Dynamic Range	30dB
Excitation Mode	permanent magnet
Weigh	1.0kg
Power Supply	Large-capacity lithium battery without memory effect, more than 8 hours