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“Tomorrow’s Instruments Today” — “For Good Measure” ® |
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A Leading South African Test and Measurement Instruments Supplier |
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“For Good Measure”® |
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TMI, Established—1982 |
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Test and Measurement Instruments C.C. |
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Test our Service and Measure with our Instruments. |
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CK 85/07464/23 |
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Please contact us by phone, fax, email or visit us at the details given above. We look forward to hearing from you. |
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Product List |
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All brands, trade names, trade marks, and logos are the property of their respective owners. |
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Brand Names |
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T + M ® |
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English, Afrikaans and Portuguese Speaking No Credit Card Payments yet. |
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Ph: +27 (011) 683 4365 Fax: +27 (011) 683 4461 E-mail: t.m.i@iafrica.com
Physical Address: 1st Floor, TMI House, 37 Garden St, Cnr 160 Bellavista Rd, Turfclub, Johannesburg, 2135 SOUTH AFRICA
Postal Address: P.O. Box 1416, Southdale, Johannesburg, 2135, SOUTH AFRICA
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T.M.I. |
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This Month’s Special |
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Excess Stock to be cleared while stocks last. > Click for More... |
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Thermography—Thermal Imager— Infrared Camera. FLIR i3 — Smallest , Lightest, most affordable camera “point-shoot-detect”. Introductory Nett Price of R 11 990.00 + VAT while stocks last. |
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Ultrasonic Thickness Testers and Gauges |
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Thickness Testers |
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Part No: TM8812 |
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1.2 to 255mm Ultrasonic Thickness, Resolution: 0.1mm. Optional Probes & RS232 Interface and Software. |
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T + M® |
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Part No: TM801F |
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0 - 1,000um, 0 40mil, Resolution: 0.1um,0.1mil. Non-Magnetic coating on Ferromagetic Base, OR Coating on Non-Ferromagnetic Base, OR 2 in 1 Combination |
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T + M® |
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Coating Thickness Measurements on Ferrous and Non Ferrous Materials with accurate and repeatable results with the use of new technology with Digital Precision. |
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Multiple Layer Ultrasonic Thickness Tester for paints, Plastics, Glass, Ceramics or other insulating Materials applied on Ferrous and Non Ferrous surfaces .
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Fast and Accurate Wall Thickness Measurement of Metalic and Non Metatic materials with 5 Preset Sound Velocities, and 10 reading storage of Robust Design.
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Measure most Electroplated Coating/ Base Combinations and also suitable for extremely thin coatings of 0.05 microns.
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Low Cost but accurate Measurement of Paint thicknesses on steel using the magnetic Attraction Principle, for quick go / no go Quality Assessment.
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Precision Ultrasonic Micrometer with Dual Element Transducer measuring Various Materials from 0.63 to 500 mm ( 0.025 - 19.99 inches), with Data Logger.
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T + M ® |
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On Ultrasonic Instruments. Ultrasonic instruments use beams of high frequency, short wave signals to inspect, monitor, and measure materials and components. Ultrasonic energy is introduced into tested materials or components and then retrieved for subsequent analysis. There are several basic types of ultrasonic instruments. Acoustic emissions instruments and fault detectors are used to monitor conditions in a variety of mechanical, electrical and process systems. When a break or deformation occurs, highly-sensitive acoustic emission sensors detect the high frequency bursts emitted during the event. Problems such as electrical shorting, corona discharging and arcing also produce detectable ultrasonic signals. Acoustic emissions instruments are often used to determine the structural adequacy of steam traps, pipes, valves, tanks, and pressure vessels. Fault detectors are used to inspect bearings, gearboxes or other rotating machinery for changes due to wear or load. Other types of ultrasonic instruments include thickness gauges, flaw detectors, corrosion instruments, leak detectors, and material condition testers. Leak detectors are used to detect holes and cracks, defective seals, channel leaks, contaminated materials, or missing closures. Material condition testers are used to evaluate materials properties or conditions such as hardness, residual stress, strength, elasticity or density. Most ultrasonic instruments consist of a non-contact focusing probe and integral meter. Form factors, mounting styles, and optional features are important specifications to consider. Some devices are designed to sit atop a bench or desktop. Others are designed to be mounted in a rack or cabinet. Printed circuit boards (PCB) that contain ultrasonic instruments attach to enclosures or plug directly into computer backplanes. Complete monitoring systems are used for the continuous measurement of flaws, thickness, or corrosion. Portable, hand held, and mobile products are also available. In terms of features, ultrasonic instruments include sorting gates or sound an alarm if a reading is outside of an acceptable range of values. Handheld or portable devices often provide data logging capabilities and can be interfaced to a computer or other electronic device. The maximum number of channel or probes is an additional consideration when selecting ultrasonic instruments. Specialized products are used for specific applications such as pipeline monitoring and aircraft component inspection. |
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Notes on Thickness Gauges. Thickness gauges are used to make precise dimensional cross section measurements on a wide variety of coatings and materials including steel, plastic, glass, rubber, ceramics, paint, electroplated layers, enamels, pavement, multi-layer deposits, etc. There are many mechanical, nondestructive and destructive techniques available to accomplish this task: IR or nuclear gauges, eddy current, magnetic particle, laser, ultrasonic, coulometric, and X-ray, are only a few of the many techniques. Beta, IR or nuclear gauge testing involves the absorption of x-ray, infrared or Beta particle radiation to measure the thickness of materials or coatings. On nonmetallic materials such as paper or plastic films or webs, radiation is transmitted through the material and a radiation or Geiger-Muller detector is located on the other side to measure radiation levels. On coated metallic materials, the radiation or Geiger-Muller detector is located on the same side and backscattered radiation is measured. Coulometric instruments use an electrochemical process to etch away a plated or metallic layer at a predetermined rate. The amount of time to remove the plated layer provides an indication of coating thickness. Coulometric measurement is a destructive technique. Eddy current, penetrating radar and other electromagnetic thickness gauge techniques are used to detect or measure flaws, bond or weld integrity, thickness, electrical conductivity, coating thickness, detect the presence of rebar or metals. Eddy current is the most widely applied electromagnetic NDT technique. The eddy current method is also useful in sorting alloys and verifying heat treatment. Eddy current thickness gauges use an electromagnet to induce an eddy current in a conductive sample. The response of the material to the induced current is sensed. Since the probe does not have to contact the work surface, eddy current testing is useful on rough surfaces or surfaces with wet films or coatings. Laser thickness gauges include methods such as laser shearography, magneto-optical, holographic interferometry or other optical techniques to detect flaws, residual stress or measure thickness. Magnetic particle or current flow uses an external magnet magnetizes the part. Magnetic poles created at flaws, cracks or other discontinuities attract magnetic particles. The magnetic particles are fine iron oxide particles (0.125 to 60 microns) with a high permeability (easily magnetized) and low retentivity (ability to stay magnetized). Three methods are typically applied: dry non fluorescent, wet non fluorescent and wet fluorescent. Mechanical gauges physically contact a sample to measure thickness using a gap and/or comparison to a known dimensional standard or master. Micrometers and calipers are common types of mechanical gauges used for dimensional gauging. Ultrasonic instruments use beams of high frequency acoustic energy that are introduced into the material and subsequently retrieved. Thickness or distance calculations are based on the speed of sound through the material being evaluated. The most widely used of all UT techniques is the pulse-echo technique. Thickness gauges using penetrating X-rays or gamma rays to capture images of the internal structure or a part or finished product. The density and composition of the internal features will alter the intensity or density of these features in the X-ray image. Densitometers are used to quantify the density variations in the X-ray image. Penetrameters or other X-ray thickness gauge references are located with the part during imaging for sizing of internal cracks, pores, defects or other features. |
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Part No: TT900 |
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Thickness Tester, Dual Mode. Both Echo-Echo and Straight Transducer. Range: 0.5mm to 508mm. Water and Dustproof.
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Time Group |
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Part No: TT700 |
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Thickness Tester, Dual Mode. For Thin Materials. Sound Velocity Testing and Single Point Calibration. Measures in mm/Inch. Data Storage, Data Output.
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Time Group |
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Standard Velocity in Materials which may change. Aluminium Acrylic Resin Aluminium Oxide Brass Cadmium Cast Iron Ceramic Chromium Copper Diamond Epoxy Resin Glass Gold Ice Iron Lead Paraffin Wax Manganese Magnesium Neoprene Nickel Nylon Perspex Platinum Plexi Glass Polyamide Polyethylene Polyurethane Polystyrene Porcelain PVC Rubber (butyl) Rubber (soft) Rubber (vulcanised) Silicone Rubber Silver Steel, mild Steel, low carbon Steel, stainless Teflon Tin Titanium Tungsten Carbon Tungsten Zinc Zirconium Water (at 20°C) |
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6260 2730 8700 4640 2800 4500 5631 6200 4700 17500 2650 5440 3240 3980 5900 2200 2200 4700 6310 1600 5630 2620 2850 3960 2700 2380 1900 1900 2400 5600 2400 1900 1450 2300 948 3600 5900 5850 5790 1350 3230 6070 5650 5400 4200 4650 1480 |
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Part No: TT150 |
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Thickness Tester, 0,8 - 225.00 mm. Portable, for Metalic and Non Metalic materials. Self Compensating. Optional Frequencies 2.5MHz, 5MHz and 7MHz.
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Time Group |
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Part No:TT300A |
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Thickness Tester, 1,25 - 225.00 mm. Auto Zero Cal. Upper and Lower alarm settings.500 Memory readings. Two point calibration for higher accuracy. RS232
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Time Group |
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Part No: TT211 |
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Coating Thickness Tester, 0 - 1250um for non Ferrous coat on Ferrous base. Easy Zero calibration. 3 adjustable resolutions of 1,5 or 10um. High speed data collection.
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Time Group |
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Part No:TT100 |
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Thickness Tester, 1 - 225.00 mm. with Backlght (0.1mm Res) . Portable, for Metalic and Non Metalic materials. Self Compensating. Optional Frequencies. IntegrateCalibration Plate.
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Time Group |
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Part No: TT130 |
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Thickness Tester, 0,8 - 225.00 mm. with 0.01mm Res. Portable, for Metalic and Non Metalic materials. Self Compensating. Frequencies 2.5MHz, 5MHz and 7MHz.
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Time Group |
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Part No: TT210 |
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Coating Thickness Tester, 0 - 1250um for Non Ferrous coat on both Ferrous & Non Ferrous base. 500 Data Storage. RS232 Data output to optional Printer. Upper and Lower Limit setting & alarm.
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Time Group |
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Copyright © 2009—2012 Test and Measurement Instruments C.C. | All rights reserved Ultrasonic Thickness Testers & Gauges |