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Magnetostriction - A Milestone in Measurement Technology
The heart of MTS sensors is the ferromagnetic measuring element, also known as the waveguide, and a movable position magnet that generates a
direct-axis magnetic field in the waveguide. When a current or interrogation pulse passes through the waveguide, a second magnetic field is created radially around the waveguide. The interaction between the magnetic field in the waveguide and the magnetic field produced by the position magnet generates a strain pulse which travels at a constant ultrasonic speed from its point of generation, the measurement point, to the end of the waveguide where it is transformed into an electric pulse in the sensor element. The resulting signal is processed by the specialized electronics of the Temposonics sensor. With our extensive know-how of ferromagnetic materials, magnetic effects and ultrasonic processes, MTS remains unrivalled in performance standards for non-contacting position measurement of the highest precision.
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POSICHRON is an absolute, contact-free and wear-free position measuring system. It is extremely sturdy making it suitable even for applications where other measuring principles would fail. The availability of various constructions - quad profile housing, flat profile, stick design, rod profile - means that the system can be adapted to suit all kinds of installation conditions.
Technical advantages:
Absolute measuring principle, totally wear- and maintenance-free, resistant to dirt humidity and dust, protection category to IP68, highly resistant to vibration and shock, resolution is virtually unlimited, linearity of up to 0.01%, no energy feed for positional magnets, measuring lengths of up to 5,750 mm.
The areas of application for POSICHRON positional sensors are wide and varied. They are used in e.g. injection-moulding equipment, dosing and mixing systems, die-casting machines, road vehicle tests, hydraulic cylinders and presses, fill-level measuring equipment etc.
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Optimum performance for industrial applications - this is what the Temposonics R-Series offers. As a high-end product, the series is the racehorse of MTS. Powerful electronics and unrivalled immunity against interference are a warranty of high-accuracy measurement results.
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LDT Feedback Transducers The Linear Displacement Transducer (LDT) is a magneto-strictive device which provides analogue or digital information of actuator position through the interaction of two magnetic fields.
Applications for the LDT include closed loop feedback to achieve accurate position, velocity or motion control.
On open loop systems, an LDT may be used as a continuous, infinite resolution position monitoring device. Parker feedback systems are suitable for precision control of a wide variety of applications, including machine tools, flight simulators, injection moulding equipment and marine stabilisation systems.
Max. working pressure: 350 bar
Max. stroke: 3.5m
Standard temperature range: -40°C to 65°C
Fluid suitability: all
Special designs to customer specification.
Click here to view catalogue page
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Optimum performance for industrial applications - this is what the Temposonics R-Series offers. As a high-end product, the series is the racehorse of MTS. Powerful electronics and unrivalled immunity against interference are a warranty of high-accuracy measurement results.
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Compact construction, a reasonable price for large-series production, complete functionality and modularity: the C-Series sensors provide persuading solutions for all requirements of the OEM-market.
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Magnetostrictive Position Sensors for Mobile Hydraulics: PCST25
Technical advantages:
Protection class IP69K
Compression-proof up to 400 bar
Measurement range 0 ... 100 to 0 ... 5750 mm
Position sensor manufacturer ASM has extended its successful family of magnetostrictive Position Sensors POSICHRON® with a new sensor series PCST25, which has been designed for special requirements in the field of mobile hydraulics.
The PCST25 series with measurement ranges up to 5,750mm and linearity up to 0.02% for high accuracy, can be used in an operation pressure zone up to 400bar and is already available at ASM.
The extremely robust construction of POSICHRON® sensors with up to an IP69K rating guarantees years of trouble-free operation. Due to their high electrical compatibility and extremely high resistance against shock and vibrations, POSICHRON® sensors are best suited for applications in extreme hostile environments, such as with off-road construction equipment.
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MTS has developed the Temposonics M series especially for integration into hydraulic cylinders. The sensor is protected against shock, vibration and extreme environmental conditions and offers an unrivalled measurement rate, outstanding repeatability (better than +/- 0.005%) and stable linearity (better than 0.04%). External effects on the measurement signal are virtually excluded by interference suppression for HF electric fields up to 200 V/m, vibration resistance up to 30gav and shock resistance of more than 100g. Changes of the hydraulic oil during operation are without effect on the measurement. The magnetostrictive technology of Temposonics sensors was invented by MTS and widely used and well proven in stationary industrial applications for many years. The magnetostrictive measurement principle is a warranty for wear and maintenance free absolute, contactless position measurement.
Temposonics MH offers continuous measurement of both - position and speed - during the position change. The integrated sensor electronics permits parameter adjustment for evaluation of the cylinder piston speed and end position attenuation can be omitted. Due to the output of a velocity signal, highly dynamic control of the movement profile of several independent hydraulic cylinders is possible for the first time. It enables the power actuators to be developed into complex movement axes and permits realization of high-quality control systems. With electro hydraulic parallel guidance of excavators or loaders, for example, Temposonics offer high signal quality and simple analogue transmission due to screening and a short signal lead.
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PCFP24: a magnetostrictive Position Sensor as flat as a ruler
Position sensor manufacturer ASM introduces a new magnetostrictive position sensor with a unique extremely flat housing: the POSICHRON® model PCFP24. With a height of only 12 mm, the “flat pack” is suited for numerous applications in narrow installation environments.
POSICHRON® is an absolute, contact-free and wear-free measuring system designed for almost all industrial applications. The PCFP24 has absolutely no protrusion in form of screws, connectors or probes jutting out of the 12 mm construction. This feature makes PCFP24 best suited for applications in narrow installation environments.
The sensor can be installed easily by means of mounting brackets. With this design the sensor position can be adjusted over its whole mechanical length without any mechanical collision. The system is wear- and maintenance-free and features high shock and vibration resistance.
The PCFP24 is available with analog interfaces for voltage (10V) or current (4-20mA) output as well as with SSI or digital pulse output Start/Stop, which makes it possible to bind the sensor into subsequent electronics for bus systems. The sensors measurement range is up to 5750 mm.
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IK1A Displacement transducer contactless measurement using magnetostriction (ANALOG OUTPUT)
Absolute type transducer
Displacements from 100 to 4000mm
Working temperature range: -40...70°C
Vibration resistant (DIN IEC68T2/6 12g)
Rod, nipple, exagonal flange AISI 316
IP67 Protection
EMI CE compatible (EN 50081-2 50082-1)
Power supply 24Vdc ±20%
Optional galvanic isolation between the power supply and the output
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The S953 VMAX Linear Displacement Transducer is the ideal solution for automation solutions requiring accurate
feedback of continuous position. It is especially recommended in environments where vibrations, extreme temperature
and contaminants are present. The S953 is an ideal solution when velocity and position need to be incorporated into the
automation control system process.
The S955 Brik linear displacement transducer is an economical solution for monitoring continuous position. It is
designed for OEM users wishing to opt for a cost effective alternative to limit switches, proximity sensors or linear
potentiometers. The streamlined anodized aluminium extrusion houses the sensing element and the electronics. The
position is determined by the magnet which is linearly guided over the sensing element.
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Highly dynamic NOVOSTRICTIVE measuring system. Secure data transfer with 16 kHz update rate.
Also versions for integration in pneumatic and hydraulic cylinders.
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Highly dynamic NOVOSTRICTIVE measuring system. Secure data transfer with 16 kHz update rate.
Also versions for integration in pneumatic and hydraulic cylinders.
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Magnetostrictive level sensors take advantage of the magnetostrictive technology for measuring product level, interface and temperature variations using to the float principle.
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Electromagnetic, electromechanical and electronic sensors for controlling the level of all kinds of fluid.
Output with ON/OFF, SPDT or continuous signals.
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Measuring length 300-4000 mm
Connection G 2, 2" NPT AG
Material st. st.
Max. pressure PN 10, Max. temperature: 70 °C
Accuracy +/- 1 mm
output 4-20 mA
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Power Sonics exclusive designs are known as the Type IP ultrasonic transducers. Typically each transducer requires a one kW generator to drive it and has a radiating surface of approximately 100 square inches. They are designed to be mounted in just about any position, depending on the cleaning application.
Faster, the Type IP transducer because of the lamination design and layout achieves more even cavitation, which result in a transducer which achieved cavitation easily and quickly. The lamination design produces higher cavitation intensity that is more evenly distributed throughout the cleaning area.
This type of magnetostrictive transducer design consists of individual laminations driven by a common coil. Coverage of the radiating surface with laminations results in a high intensity design capable of being driven at high power densities. Levels of 10 Watts per square inch of lamination are typical with this approach.
The high efficiency of this new transducer design also reduces stress on generator components, which results in extended generator life. Type GM, GL and GP generators power these immersibles.
Other advantages of the lamination material are mechanical, electrical and thermal toughness. Low voltage excitation and continuous polarization support the high efficiency design. The "Synergistic" driving action of the radiating surface allows the IP transducer to be driven at the highest usable power levels for achieving effective cavitation.
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