MT660 Multi-Mode Ultrasonic Thickness Gauge
Mitech
MT660
0.65-600mm（P-E),3-100mm(E-E)
0.1/0.01/0.001mm
USB. Bluetooth
30h (default brightness setting)
317g
120*67*31mm
31.5*24.5*8.5cm
1.5kg
Product
Overview
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Technical
Configuration
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- Overview
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Product OverviewMT660 multi-mode ultrasonic thickness gauge is the newest promoted upgraded product by Mitech. It pays more attention to user experience and functional innovation. Adopted with 320*240 colorful LCD display, it can show you clear measurement result under dim light and strong sunshine environment, improved the visual experience greatly. Sealed aluminum-magnesium alloy case delicate design, smaller volume, better quality are specially designed for defense against oil, dust in the bad sit environment. With intelligent warning function, it will promote automatically when beyond the setting range, it is convenient for reading. It can meet the efficient collecting material’s multiple points’ thickness accurate testing demand. It supports 0.001 high accuracy display and Bluetooth communication. With through coating mode and common mode, its unique performance of capable for testing thickness through the coating provides efficient solution for testing the workpiece of coated surface or corrosion materials. It can measure the workpiece directly without needing to get rid of the surface coating before measurement. It’s widely used for monitoring the production equipments’ various pipelines and pressure vessel corrosion reducing degree in the fields of petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and so on. It also can be used for making accurate measurement to various plates and machining parts. It is the necessary professional precision instrument for improving the production efficiency and qualification rate as well as saving cost.
Function & applicationCapable of performing measurements on a wide range of material, including metals, plastic, ceramics, composites, epoxies, glass and other ultrasonic wave well-conductive materials.Transducer models are available for special application, including for coarse grain material and high temperature applications.Working PrincipleThe 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 from 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: H=v×t/2
Where：
H－Thickness of the test piece.
v－Sound Velocity in the material.
t－The measured round-trip transit time.
Working ConditionsOperating Temperature: －20℃～＋60℃;
Storage Temperature：-30℃～＋70℃
Relative Humidity ≤90％；
The surrounding environment should avoid of vibratin, strong magentic field, corrosive medium and heavy dust.
Instrument FeaturesMulti-mode: Pulse-Echo mode (P-E mode) and Echo-Echo mode (E-E mode). In Echo-Echo mode, it can test the wall thickness eliminating paint or coating thickness.
Wide measuring range：Pulse-Echo mode: (0.65～600)mm (in Steel). Echo-Echo mode: (2.5～100)mm
V-Path correction to compensate the nonlinearity of the probe
Color TFT display (320×240 TFT LCD) with adjustable backlight, allow the user to work at worksites with low visibility.
Non-volatile memory can store 100 groups of test thickness. One hundred records max for each group.
Two AA size alkaline batteries as the power source. Continuous operating period of no less than 100 hours (default brightness setting). Display Standby and Auto Power Off functions to save power.
With internal Bluetooth module, it can print test report wirelessly.
USB 2.0 communication port. Online transfer of the measured data to PC via USB.
Operating Method and AttentionsMeasuring pipe and tubing.
When measuring a piece of pipe to determine the thickness of the pipe wall, orientation of the transducers is important. If the diameter of the pipe is larger than approximately 4 inches, measurements should be made with the transducer oriented so that the gap in the wearface is perpendicular (at right angle) to the 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.
Measuring hot surfaces
The velocity of sound through a substance is dependant upon its temperature. As materials heat up, the velocity of sound through them decreases. In most applications with surface temperatures less than about 100℃, no special procedures must be observed. At temperatures above this point, the change in sound velocity of the material being measured starts to have a noticeable effect upon ultrasonic measurement. At such elevated temperatures, it is recommended that the user perform a calibration procedure on a sample piece of known thickness, which is at or near the temperature of the material to be measured. This will allow the gauge to correctly calculate the velocity of sound through the hot material.
When performing measurements on hot surfaces, it may also be necessary to use a specially constructed high-temperature transducer. These transducers are built using materials which can withstand high temperatures. Even so, it is recommended that the probe be left in contact with the surface for as short a time as needed to acquire a stable measurement. While the transducer is in contact with a hot surface, it will begin to heat up, and through thermal expansion and other effects, may begin to adversely affect the accuracy of measurements.
Measuring laminated materials.
Laminated materials are unique in that their density (and therefore sound-velocity) may vary considerably from one piece to another. Some laminated materials may even exhibit noticeable changes in sound-velocity across a single surface. The only way to reliably measure such materials is by performing a calibration procedure on a sample piece of known thickness. Ideally, this sample material should be a part of the same piece being measured, or at least from the same lamination batch. By calibrating to each test piece individually, the effects of variation of sound-velocity will be minimized.
An additional important consideration when measuring laminates, is that any included air gaps or pockets will cause an early reflection of the ultrasound beam. This effect will be noticed as a sudden decrease in thickness in an otherwise regular surface. While this may impede accurate measurement of total material thickness, it does provide the user with positive indication of air gaps in the laminate.
Suitability of materials
Ultrasonic thickness measurements rely on passing a sound wave through the material being measured. Not all materials are good at transmitting sound. Ultrasonic thickness measurement is practical in a wide variety of materials including metals, plastics, and glass. Materials that are difficult include some cast materials, concrete, wood, fiberglass, and some rubber.
Couplants
All ultrasonic applications require some medium to couple the sound from the transducer to the test piece. Typically a high viscosity liquid is used as the medium. The sound used in ultrasonic thickness measurement does not travel through air efficiently.
A wide variety of couplant materials may be used in ultrasonic gauging. Propylene glycol is suitable for most applications. In difficult applications where maximum transfer of sound energy is required, glycerin is recommended. However, on some metals glycerin can promote corrosion by means of water absorption and thus may be undesirable. Other suitable couplants for measurements at normal temperatures may include water, various oils and greases, gels, and silicone fluids. Measurements at elevated temperatures will require specially formulated high temperature couplants.
Inherent in ultrasonic thickness measurement is the possibility that the instrument will use the second rather than the first echo from the back surface of the material being measured while in standard pulse-echo mode. This may result in a thickness reading that is TWICE what it should be. The Responsibility for proper use of the instrument and recognition of these types of phenomenon rests solely with the user of the instrument.
Instrument MaintenanceWhen the thickness gauge appears some other abnormal phenomena, please do not dismantle or adjust any fixedly assembled parts. Fill in and present the warranty card to us. The warranty service can be carried on. Keep it away from vibration, strong magnetic field, corrosive medium, dumpiness and dust. Storage in ordinary temperature. With Original packing, transport is allowed on the third grade highway. -
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Measuring Range 0.65-600mm( P-E), 3-100mm (E-E) Working Frequency (2.5-7）MHZ Probe Diameter Standard Probe P5EE is 10mm, Probe N05 is10MM、Probe N07 is 6MM、Probe HT5 is12MM、Probe N02 is12MM Min. Pipe Diameter Φ15mm×2.0mm Resolution 0.1/0.01/0.001mm Accuracy ±0.04mm（<10mm）；±0.4%Hmm(>10mm) Display Color TFT display (320×240 TFT LCD) with adjustable backlight Single /Scan Mode Single mode,Scan Mode, and and diff mode Probe Calibration Zero calibration, two-point calibration, automatic error correction system Velocity Range 1000-9999m/s Unit Metric/Imperial unit selectable Language English Memory 100 groups (100values for each group) of stored values Communication Port USB.Bluthtooth Data Printing yes Power supply Two “AA” size, 1.5 Volt alkaline batteries Lower Power Comsumption yes Working Hours 30 hour Operating Temperature -20℃-+60℃ Relative Huminity ≤90％ Appearance Extruded aluminum body Outline 120mm×67mm×31mm Gross Weight 1.5 KG PC Datapro Software Yes Speech Function Yes -
Narrow-pulse thickness probe P5EE Mitech narrow-pulse thickness probe P5EE, suitable for Mitech series multi-mode ultrasonic thickness gauges including MT180, MT190, MT600, MT660, it is the standard configuration for MT180, MT190, MT600, MT660. The P5EE probe with frequency of 5MHz, crystal size of 10mm, its measuring range is 2mm-600mm in steel under the launch-echo model while its measuring is 3.0mm-100mm in steel under the echo-echo mode. The cable length of the P5EE probe is 90cm and its limitation for the minimum pipe diameter is Φ20mm×3.0mm. Mitech P5EE probe, elaborately developed with imported material, integrated die casting process and splinting probe design for convenient plugging, it can effectively reduce the fault caused by frequent plugging, accurate and durable. It can measure the base thickness for the workpiece with coated surface directly through the coating without needing handle the surface. It is widely used in manufacturing, metal processing industry, chemical industry, inspection industry and other testing fields.
Micro-diameter probe N07 The micro-diameter ultrasonic thickness probe N07, suitable for Mitech all line ultrasonic thickness gauges, it is the standard configuration of MT660. The micro-diameter ultrasonic thickness probe N07 with frequency of 7MHz, crystal size of 6mm, suitable for the measurement of thin wall and small arc surface, its measuring range for common ultrasonic thickness gauge is 0.75-80mm in steel while its measuring range for multi-mode ultrasonic thickness gauge is 0.65-200mm in steel. The cable length of the N07 probe is 90cm and its limitation for the minimum pipe diameter isΦ15mm×2.0mm. Mitech N07 probe, elaborately developed with material of piezoelectric ceramic, engineering plastic and stainless steel, integrated die casting process and splinting probe design for convenient plugging, it can effectively reduce the fault caused by frequent plugging, accurate and durable. It is widely used for monitoring the corrosion thinning degree for various pipelines and pressure vessel of the manufacturing devices in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. It also can be used to make accurate measurement for various plants and mechanic parts.
Ultrasonic couplant The couplant coated on the probe and the measured workpiece surface as the medium to isolate the air between them, selecting the proper viscosity couplant is the critical thing for the precisely measurement. Mitech series ultrasonic thickness gauge standard 75mm ultrasonic special couplant in the configuration for isolating the air between the ultrasonic probe and the workpiece surface, which can make probe produced ultrasonic wave into the workpiece effectively to ensure the accurate measurement of thickness. The couplant with squeeze bottle packing, it is clean and environmental. It is recommended to select the low viscosity couplant for measuring the smooth material and select the high viscosity couplant (like glycerine cream, butter and so on) for measuring the rough material.
ABS instrument case The instrument case of Mitech ultrasonic thickness gauge, length: 27cm, width: 22.5cm, height: 7.5cm and weight: 0.698kg, designed with ABS engineering plastic, It has excellent performance like waterproof, shockproof, excellent heat resistance and low temperature resistance. It can effectively prevent oil, dust and corrosion in harsh environment. Its size in line with the standards for aviation and train carrying (capable of putting under the seat and on the luggage rack), it is safe, reliable and stable.
AA size alkaline battery Mitech series ultrasonic thickness gauges, with low-power design and long standby, MT150/MT160/MT200/MT180/MT190/MT600/MT660 are with two AA size alkaline batteries for power supply, easy to replace.
USB communication cable The USB communication cable for Mitech ultrasonic thickness gauge, used for connecting PC and main unit, it can realize applications for communication with computer, analysis and storage the data.
Data proceeding software The data proceeding software for ultrasonic thickness gauge, the standard configuration for MT600/MT660, it can be easily and quickly do data exchange and parameter settings with PC. It has rich features like measurement storage management, statistical analysis of measured value, printing measurement report and so on. It is suitable for steel manufacturing, ship-building, automobile manufacturing, aircraft manufacturing, high pressure vessels, electric devices, bearings, standard parts, metal textile accessories and instrumentation accessories and production enterprises related with metal material products. With the analysis results provided by the software, it can make enterprise quality control more scientific basis and higher traceability. Improving the quality of enterprise information management level is the effectively guarantee for enterprise analysis the product qualification rate and improve the quality monitor. The software can also be used as effective tools in scientific research units related with metal materials, manufacturing plants, universities and other departments engaged in theoretical teaching, experimental analysis and basic scientific research.
Screwdriver The screwdriver is the standard configuration for MT200 and MT660, used for opening the battery cover. 
Bluetooth printer The Bluetooth printer of Mitech portable ultrasonic thickness gauge, separated from the main unit, it does not occupy the main unit power supply. With independent power supply, it is easy to use and operate. It can realize the Bluetooth communication with the main unit without needing cable. The imported long-lasting printing paper with width of 57.5±0.5 mm, diameter of 30mm, it is favorable for data long-term stored, not easy to fade. The imported thermal high speed printer core, low fault rate, strong anti-interference, it can meet demand for data printing on site with high quality. -
Standard ultrasonic thickness probe N05 Mitech standard ultrasonic thickness probe N05, suitable for Mitech all line ultrasonic thickness gauges, capable of replacing standard probe N05/90°. If needing N05 probe as standard probe, you should note it in advance. The standard ultrasonic thickness probe N05 with frequency of 5MHz, crystal size of 10mm, its measuring range for common ultrasonic thickness gauge is 1.0-230mm in steel while its measuring range for multi-mode ultrasonic thickness gauge is 1.0-600mm in steel. The cable length of the N05 probe is 90cm and its limitation for the minimum pipe diameter is Φ20mm×3.0mm. Mitech N05 probe, elaborately developed with material of piezoelectric ceramic, engineering plastic and stainless steel, integrated die casting process and splinting probe design for convenient plugging, it can effectively reduce the fault caused by frequent plugging, accurate and durable. It is widely used for monitoring the corrosion thinning degree for various pipelines and pressure vessel of the manufacturing devices in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. It also can be used to make accurate measurement for various plants and mechanic parts.
The standard angle probe N05/90° Mitech standard ultrasonic thickness probe N05/90°, suitable for Mitech all line ultrasonic thickness gauges, it is the standard configuration of MT150, MT160 and MT200. The standard ultrasonic thickness probe N05/90°with frequency of 5MHz, crystal size of 10mm, its measuring range for common ultrasonic thickness gauge is 1.0-230mm in steel while its measuring range for multi-mode ultrasonic thickness gauge is 1.0-600mm in steel. The cable length of the N05/90° probe is 90cm and its limitation for the minimum pipe diameter is Φ20mm×3.0mm. Mitech N05/90°probe, elaborately developed with material of piezoelectric ceramic, engineering plastic and stainless steel, integrated die casting process and splinting probe design for convenient plugging, it can effectively reduce the fault caused by frequent plugging, accurate and durable. It is widely used for monitoring the corrosion thinning degree for various pipelines and pressure vessel of the manufacturing devices in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. It also can be used to make accurate measurement for various plants and mechanic parts.
Coarse-grain probe N02 The Mitech coarse-grain ultrasonic thickness probe N02, suitable for Mitech all line ultrasonic thickness gauges, it is the optional configuration. The coarse-grain ultrasonic thickness probe N02 with frequency of 2.5MHz, crystal size of 14mm, suitable for the measurement of cast iron and other coarse-grain materials, its measuring range for common ultrasonic thickness gauge is 3-300mm in steel while its measuring range for multi-mode ultrasonic thickness gauge is 3-600mm in steel. The cable length of the N02 probe is 90cm and its limitation for the minimum pipe diameter isΦ20mm. Mitech N02 probe, elaborately developed with material of piezoelectric ceramic, engineering plastic and stainless steel, integrated die casting process and splinting probe design for convenient plugging, it can effectively reduce the fault caused by frequent plugging, accurate and durable. It is widely used for monitoring the corrosion thinning degree for various pipelines and pressure vessel of the manufacturing devices in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. It also can be used to make accurate measurement for various plants and mechanic parts.
High temperature probe HT5 The Mitech high temperature ultrasonic thickness probe HT5, suitable for Mitech all line ultrasonic thickness gauges, it is the optional configuration. The high-temperature ultrasonic thickness probe N02 with frequency of 2.5MHz, crystal size of 14mm, suitable for measuring the thickness for high-temperature material under 300℃, its measuring range for common ultrasonic thickness gauge is 3-200mm in steel while its measuring range for multi-mode ultrasonic thickness gauge is 1-600mm in steel. The cable length of the HT5 probe is 70cm and its limitation for the minimum pipe diameter isΦ30mm. Mitech HT5 probe, elaborately developed with material of piezoelectric ceramic, engineering plastic and stainless steel, integrated die casting process and splinting probe design for convenient plugging, it can effectively reduce the fault caused by frequent plugging, accurate and durable. It is widely used for monitoring the corrosion thinning degree for various pipelines and pressure vessel of the manufacturing devices in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. It also can be used to make accurate measurement for various plants and mechanic parts.
High couplant MHTC-Ⅱ The Mitech high temperature couplant GW-II is one of the optional configuration for Mitech series of ultrasonic thickness gauges. The high temperature couplant GW-II, suitable for couplanting between the high temperature probe and the tested workpiece under the temperature lower than 300 ℃, compared with the common couplant, the high temperature couplant with higher heat resistance, it will not produce the smoke during using, more health and environmental, not easy to freeze and flush, capable of ensuring the normal propagation of the ultrasonic signal between the probe and the tested material under high temperature situation to realize the precisely measurement, it is the necessary accessory for thickness measurement under high temperature. It is recommended to use on the probe when do measurement under higher temperature.
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