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- Pickering Interfaces Inc.
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PXI/PXIe LVDT, RVDT, Resolver Simulator Modules
Linear variable differential transformers (LVDT) are electrical transformer sensors to measure linear displacement. Driven by an AC excitation source, the LVDT generates a pair of AC output signals modulated according to the core's mechanical position (displacement). LVDTs have been widely used in applications such as power turbines, hydraulics, automation, aircraft, satellites, nuclear reactors, and many others. These transducers have low hysteresis and excellent repeatability.
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PXIe-4340, PXI Displacement Input Module
785068-01
The PXI Displacement Input Module supports 4-, 5-, and 6-wire AC linear variable differential transformer (LVDT) and AC rotary variable differential transformer (RVDT) measurements. The module simultaneously samples each analog input and sets the excitation frequency and voltage for each channel independently. You can set different timing, triggering, and sampling modes for each channel independently. Diagnostic features include self-calibration, overcurrent detection, and open coil detection.The PXI Displacement Input Module includes the NI-DAQmx driver and configuration utility that simplify configuration and measurements. NI-DAQmx supports NI programming environments as well as Python, ANSI C, C#.NET, and MathWorks MATLAB® software.
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Displacement Sensing Products
Ideal for precise micro-position measurements, our miniature linear variable displacement transducers (LVDTs) provide accurate, repeatable measurement. Inductive contact, non-contact, slide, and spring-actuated sensors are available in various stroke lengths-- ideal in spaces where traditional LVDTs are too large. Our sensors operate in harsh environments over millions of cycles without degradation in performance
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Displacement Transducers
Displacement transducers are suitable for direct, accurate measurement of displacements in automatic control and metrology.
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Linear Variable Differential Transformers (LVDTs)
Whilst there are several ways to measure displacement, the Linear Variable Differential Transformer (LVDT) remains a popular transducer in most industrial applications. LVDTs initially were used as a means of taking dimensional readings in laboratories. They gained popularity in a wide variety of industrial monitoring and control applications, and whilst an LVDT is used to measure displacement the technology can be employed within other transducer types.
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Crack Opening Displacement (COD) gauges
COD
Instron® Crack Opening Displacement transducers are designed specifically to perform standard ASTM and ISO fracture mechanics tests (both cyclic and static), covering all common specimen geometries (CT, SEB, Centre Crack, Arc Shaped). Each model offers class leading linearity, whilst being rugged enough to withstand the high energy release common in many of these applications and can be used at both elevated and sub-ambient temperatures. These gauges comply with requirements laid down in ASTM E399-09.
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Force Sensors / Force Transducers
HBM force sensors and force transducers measure static and dynamic tensile and compressive loads - with virtually no displacement. Your force load cell can be supplied in the most varied of designs and classes of accuracy. Typical force measurement application areas include bench testing, e.g. force measurement to check material quality and automation technology, e.g. for monitoring quality during reshaping or bonding operations.
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Density Determination and Bulk Density
Consisting of 2 incremental displacement transducers 25 x 0.01 mm (measurement of volume change over path) with interface for connecting the displacement transducers with RS 232 C interface for PC, complete with Windows software with real-time display of uplift over time including trial database and option for log output.
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Embedded Rod Style LDT
AMETEK Sensors, Test & Calibration
The 958A Embedded Linear Position Transducer is a Rod Style LDT (Linear Displacement Transducer) that is designed fit entirely inside of hydraulic cylinder. The 958A provides absolute analog feedback in the most demanding applications.
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Low Pressure Variable Reluctance Sensor
DP45
The Validyne DP45 Very Low Differential Pressure Transducer is designed for extremely low pressure measurement in the order of 1 inch water column. This instrument is used extensively in connection with flow measurements where dynamic response at low flow rates is required. Dynamic line pressure effects are minimized due to the combination of low internal volume, symmetrical construction, and small volumetric displacement inherent in the DP45 design.
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Displacement and Encoders
INCREMENTAL digital Transducers are mainly designed for displacement measurement in machine tools and other industrial applications. The sensors are characterized by high precision and are absolutely dust and waterproof. The used materials permit applications in heavy industrial environments.DISPLACEMENT Transducers are suitable for measurements of small distances up to 50mm. They are characterized by high accuracy and repeatability, reliability and fast response. Digital ENCODERS operate on optical or magnetical principal and are offered with incremental or absolute coded outputs. They are suitable for precision industrial applications.
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Acquisition Of 8 Displacement Transducers
APCI-3701-8
PCI interface to the 32-bit data bus Acquisition of 16 or 8 inductive displacement transducers (Half Bridge, LVDT) 8 or 16 input channels ± 10 V 16-bit resolution Measuring frequency up to 100 kHz Conversion can be triggered through software End of conversion can be inquired through software Possibility of interrupt through digital input channels (when a data or a time value is exceeded) PCI-DMA access Onboard FIFO buffers Sequence RAM 16 isolated digital I/O, 24 V Software operation Supported inductive transducers for APCI-3701Standard board APCI-3701-8 or APCI-3701-16Transducer type:
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Displacement Transducers
Procter & Chester Measurements Ltd
Pressure: Measures gas or liquid pressure. Pressure is an expression of the force required to stop a fluid from expanding. The transducer generates a signal from the pressure imposed upon it. Torque: Measures the torque (or twisting motion) on a static or rotating system. The static torque element has little movement and therefore more economic to manufacture and purchase. Rotary or dynamic torque is more complicated as the signal needs to be transferred using slip rings, wireless telemetry or rotary transformers/inductance technology so that the strain gauged shaft can continuously rotate. Displacement: Measures distance. The displacement transducers that PCM offer are slightly different to standard units. They have a strain gauge/wheatstone bridge. The benefit here is that if the customer has existing electronics that uses strain gauge/load cell technology, they can use them with these sensors.
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Displacement Transducers - DC Operation
Columbia Research Laboratories
The Columbia DDCP Series Transducers are completely self-contained displacement measurement systems that operate from a low voltage DC power supply or battery. They permit highly accurate readout and recording of an output signal directly without auxiliary signal conditioning electronics.
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Electromechanical Testing Machines
Stand model in four-pillar design with electronic force transducer, flanged to the movable testing machine crosshead and electronic position transducer for measuring the crosshead path. The machine is driven by a quartz-precise stepper motor with two ball screws. Complete with integrated displacement measuring device 0.01 mm over the entire travel distance as well as additional displacement transducer with connecting cable and holder
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Portable Digital Manometer
PS309
Featured are an integral variable reluctance transducer, solid state electronics module, 3 digit liquid crystal display (LCD)* and battery pack with six 1.5V penlight cells for truly portable operation. The units can also be powered from an external DC power supply or AC battery eliminator (converter) module. The transducer features all corrosion resistant materials in contact with the pressure media (both ports in differential units), very low internal cavity volumes and ultra-low volumetric displacement with full-scale pressure excursion. Transducer calibration is unaffected by dielectric properties of the sensed fluid. Gauge and differential transducers may be disassembled and range changed by simple diaphragm replacement.
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Acquisition Of 16 Displacement Transducers
APCI-3701-16
PCI interface to the 32-bit data bus Acquisition of 16 inductive displacement transducers (Half Bridge, LVDT) 16 input channels ± 10 V 16-bit resolution Measuring frequency up to 100 kHz Conversion can be triggered through software End of conversion can be inquired through software Possibility of interrupt through digital input channels (when a data or a time value is exceeded) PCI-DMA access Onboard FIFO buffers Sequence RAM 16 isolated digital I/O, 24 V Software operation Supported inductive transducers for APCI-3701Standard board APCI-3701-8 or APCI-3701-16Transducer type:
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Servo type Accelerometer
A motion is sensed by a displacement detector, a current is fed to the coil to get back the pendulum mass to the original position. This current will be proportional to the acceleration, that is converted to an output voltage. The Servo type accelerometer is for the Earthquake Monitoring or measurements of micro tremor on the Civil Engineering Structures because of its higher sensitivity and stability or more accurate phase responses in the lower frequency range than those of other vibration transducers.
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Rod and Barrel Style (BLOK) LDT
AMETEK Sensors, Test & Calibration
The Rod and Barrel Style LDT – BLOK - Housing is designed for applications where mounting a standalone Rod or Profile Style Linear Displacement Transducer, is prohibitive. This housing style adds a chamber, magnet and piston. The aluminum extrusion houses the sensing element and electronics.
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Displacement Transducers
Displacement transducers, non-contact displacement sensors, LVDT sensors, LVIT sensors and potentiometers with a variety of electrical outputs to measure and transmit travel ranges.
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Displacement Transducers [mm]
The Displacement Transducers are for use in precision measurement in the m range to simple displacement monitoring during manufacturing and assembly or the supervision of construction projects.
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Voltage Meter
MDN8I
MDN8I is a mezzanine module designed for high-precision measurements in dynamic signal analysis systems, as well as for joint work with ICP sensors and vibration transducers with a charge output (force sensors, dynamic pressure, acoustic emission, vibration displacement, etc.). The MDN8I mezzanine module has electrical characteristics no worse than those of most foreign and domestic counterparts, and in some parameters exceeds them.
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Digital LVDT sensor ZET 7111-L
ZET 7111-L is a digital LVDT displacement sensor. It requires no special adjustment and starts measuring right after power is on. Displacement measured values are transferred in digital form via CAN interface. The LVDT digital sensor consists of a primary transducer (LVDT sensor) and a measuring element (ZET 7111-L unit). The LVDT sensor converts meaured object (to which it is mechanically connected) linear displacement into electric signal to be further transferred into displacement values by the measurement module.
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Digital Variable Impedance Transducer
digiVIT
Kaman Fuzing & Precision Products
The Most Advanced Digital Variable Impedance Transducer for NoncontactLinear Position / Displacement / Proximity Sensing* Self tuning bridge, will perform with nearly any sensor, any conductive target * Pushbutton calibration * Pushbutton temperature compensation * Pushbutton zeroing * Embedded intelligence, all functions accessible without a PC * Large easy to read digital display * Scrolling menus for set up and calibration * Ethernet communication * No sensor, shorted sensor detection
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Transducer Calibration
m+p SensCal
Regular transducer calibration is an essential requirement for maintaining the accuracy, reliability and repeatability of the results obtained from a measurement system. m+p international’s m+p SensCal program provides a quick and simple process for calibrating accelerometers (piezo-electric with charge output or IEPE, piezo-resistive, capacitive) in your laboratory, as well as velocity or displacement transducers.
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Seismic Sensors & Transducers
Displacement Pickups are vibration transducers that incorporate a spring-mass system with eddy-current damping using a frictionless pivot. This pivot is a spring flexure that serves as the ‘spring’ and a moment arm attached to the pivot serves as the ‘mass’, which allows resolutions down to the micro inch range. At frequencies above 50Hz, the mass remains fixed in space and becomes an inertial reference. A transducer within the pickup senses the motion of the mounting base relative to the inertial reference and converts it into a proportional signal. Appropriate damping results in a frequency response flat down to 10 Hz. Note that the pickup senses in only one plane, which is perpendicular to the mounting base.
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LVDT to Digital and RVDT to Digital Converters
Computer Conversions Corporation
LVDT Displacement transducers accurately measure position and displacement. The strength of the LVDT is in its principle of operation. As LVDT sensors are inductive, there is no electrical connection across the sensor, which ensures clean, accurate data and a long life.
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LVDT to Digital-RVDT to Digital Converters
Computer Conversions Corporation
LVDT Displacement transducers accurately measure position and displacement. The strength of the LVDT is in its principle of operation. As LVDT sensors are inductive, there is no electrical connection across the sensor, which ensures clean, accurate data and a long life.
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Digital to LVDT Converters
ST-DLVA
Computer Conversions Corporation
The SLVT Series are complete, low profile, continuously updating, single channel, Isolated Digital to LVDT Converters used to simulate the output of LVDT's (Linear velocity displacement transducers), RVDT's (Rotary...) and other phase/voltage sensitive AC devices.
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LVDC Series
Computer Conversions Corporation
LVDT Displacement transducers accurately measure position and displacement. The strength of the LVDT is in its principle of operation. As LVDT sensors are inductive, there is no electrical connection across the sensor, which ensures clean, accurate data and a long life.
