Testing Instrument
Ultrasonic Thickness Gauge เครื่องวัดความหนาชนิดอัลตราโซนิค
Introduction :
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. • Display 128 x 64 LCD with LED backlight; • Measuring Range : (0.75~700)mm (Steel) / (0.03inch-27.6inch) • Velocity Range : (1000~9999) m/s; • Resolution : 0.001mm • Measuring accuracy : ± (0.5%H+0.04mm) ; H is thickness value ; • Measurement cycle : Single point measurement 6 times/per; • Calibration Function : Zero calibration and two-point calibration • Sound-light alarm function • Lower limit for steel pipes : 5MHz probe : Ø20mm*3.0mm (Ø0.8 x 0.12 inch) : 7MHz probe : Ø15mm*2.0mm (Ø0.6 x 0.08 inch) • Storage : 3000 values of saved data • Communication Port : RS232 • Language : English and Chinese • Power Source : 2pcs 1.5V AA size • Working Time : more than 50 hours (LED backlight off). • Outline Dimensions : 145mm*74mm*32 mm • Weight : 245g
JT190
Technical Specification :
Primary Theory :
Working Temperature :—20℃~ + 50℃ Storage Temperature :-30℃~ + 70℃ Working Humidity :≤90 % ; On surrounding, need to no strong vibration, strong magnetic field, corrosive medium or severe dust. 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 returned 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 : V x t H = 2 Where : H—Thickness of the test piece. v----Sound Velocity in the material. t----The measured round trip transit time.
Working Conditions :
Main Functions :
• Capable of performing measurements on a wide range of material, including metals,plastic,ceramics,composites,e poxies,glass and other ultrasonic wave well-conductive materials. • Can collocate variety different frequencies,wafer sizes of probes; • Sound Velocity Calibration function as a known thickness; • Coupling status indicator showing the coupling status; • EL backlight, and convenience to use under dark environment; • Have the battery indicator function, can real-time display the remaining power • Auto sleep and auto power off function to conserve battery life; • Smart, portable,high reliability, suitable for bad environment, resist to vibration, shock and electromagnetic interference.
Sound Velocity : Material
Sound Velocity : Material
Velocity
Velocity
m/s
m/s
in/μs 0.250 0.233 0.226 0.173 0.186 0.233 0.094 0.105 0.142 0.128 0.164
in/μs 0.236 0.117 0.109 0.100 0.157 0.222 0.106 0.230 0.094 0.222 0.091 0.058
Aluminum
6340-6400
Titanium
5990 2960 2760 2540 3988 5639 2692 5842 2388 5639 2311 1473
Steel, common Standard probe
5920 5740 4399 4720 5930 2400 2680 3607 3251 4170
Tin
Brass
Epoxy resin
Copper
Ice
Iron
Nickel
Cast Iron
0.173-0.229 4400-5820
Plexiglass Porcelain
Lead
Nylon Silver
PVC
Quartz glass
Rubber, vulcanized
Gold Zinc
Water
The choice to probes : Name
Model Frequency Diameter
Testing Range
Min. areaØ
Application
Large diameter probe Large range probe
N02 N02 N07 HT5
2.5
14mm 14mm 10mm
3.0mm~400.0mm (steel) Below 40mm (Gray Iron HT200) 3.0mm~600.0mm (steel) Below 100mm (Gray Iron HT200)
20mm casting work piece 20mm casting work piece
2 5 7 5
Standard probe
N05/9, 0°
1.0mm~230.0mm (steel) 0.28mm~80.0mm (steel)
Ø20 mm x 3.0 mm General bent probe Ø15 mm x 2.0 mm thin work piece
Micro-diameter probe
6mm
High Temperature
14mm
3~200mm (steel)
30mm
high temperature
Probe
2.5
JSR Entech Catalogue 505 jetco@jet.co.th
jet@jet.co.th
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