LVDT

E Series – Economy Series AC LVDT

• Economical
• Stroke ranges from ± 0.1 to ±2 inch
• AC operation, 50Hz to 10kHz
• Magnetically shielded case
• Available with imperial or metric core

Description

The E Series of LVDTs is highly economical, satisfying numerous applications in which LVDT performance and reliability are desired, but where budgets are limited. With a linearity of just ±0.5% of full range (E 2000, ±1.0%), the E Series is suitable for most applications with moderate operating temperature environments. Housed in magnetic stainless steel for protection against electromagnetic and electrostatic interference, the E Series rugged construction is capable of resisting the shock and vibration of most industrial applications.

Features

• Customary LVDT performance
• AISI 400 Series stainless steel case
• Imperial or metric core

Applications

• General industrial
• Moderate operating temperature environments
• Cost sensitive applications

HR Series – General Purpose LVDT

• High Reliability
• Large core-to-bore clearance
• Operating temperature up to 220°C (option)
• Stroke ranges from ± 0.05 to ±10 inches
• AC operation from 400Hz to 5kHz
• Stainless steel housing
• Imperial or metric threaded core
• Many options and accessories

Description

The HR Series general purpose LVDTs provide the optimum performance required for a majority of applications. The large 1/16 inch [1.6mm] bore-to-core radial clearance provides for ample installation misalignments and therefore reduces the application costs. Featuring a high output voltage and a broad operating frequency range, these versatile and highly reliable LVDTs deliver worry-free and precise position measurements.

Features

• 0.25% linearity (100% stroke)
• Large 1/16” core-to-bore clearance
• Shock and vibration tolerant
• Electromagnetic/electrostatic shielding
• Mild radiation resistance (optional)
• Calibration certificate supplied with each unit

Applications

• Process control
• Factory automation
• Materials testing
• Metrology
• Applications with large misalignments
• General industrial

MHR Series – Miniature General Purpose AC LVDT

• Small size and low mass core
• High output signal
• Stroke ranges from ± 0.005 to ±2 inches
• AC operation from 2kHz to 20kHz
• Operating temperature up to 220°C (optional)
• Mild radiation resistance versions (optional)
• Stainless steel housing
• Imperial or metric threaded core

Description

The legendary MHR Series LVDTs provide precision measurements in space restrictive applications. With a
diameter of just 3/8 inch [9.5mm], and an extremely lightweight core, the MHR Series is ideal for applications
where excessive core weight could influence the motion of the measurand; with less inertia, accurate measurements at higher displacement speeds are easier to achieve. The lightweight core also reduces mechanical stresses and helps preserve the structural integrity of the core actuation assembly.

Features

• Compact size
• Lightweight / low mass core
• ±0.25% linearity (100% stroke)
• Shock and vibration tolerant
• Mild radiation resistance (optional)
• Calibration certificate supplied with each unit

Applications

• X, Y, Z stage position feedback
• Wire-die bonding machines
• Cylinder position feedback
• Voice coil testing
• Materials testing machines
• Space restricted installations

DC-EC Series – General purpose DC LVDT

• High level ±10VDC output
• Stroke ranges from ±0.05 to ±10in
• 0.25% linearity
• Reverse polarity protection
• Double magnetic shielding
• Stainless steel housing
• Imperial or metric threaded core

Description

The DC-EC Series DC operated LVDTs combine a computer-designed AC LVDT with custom integral signal conditioning to achieve premium performance. Operating on a nominal ±15VDC supply, the DC-EC Series delivers an extremely linear, low noise, yet high frequency response ±10VDC output.

Features

• Bi-polar DC operation
• Shock and vibration tolerant
• Captive core option (available on select models)
• AISI 400 Series stainless steel housing
• CE compliant
• Calibration certificate supplied with each unit

Applications

• Materials testing
• Z-axis position feedback for punch-presses
• Microscope X-Y stage position control
• Medical imaging
• Automotive suspension testing
• Flight simulators

DC-SE Series – General purpose DC LVDT

• Single-Ended DC operation
• Low 6mA current consumption
• Stroke ranges from 0.1 to 6 inches
• 0.25% linearity
• Stainless steel housing
• Double magnetic shielding
• EMI/ESD protected
• 1 meter long shielded cable
• Captive core option

Description

The DC-SE Series LVDTs operate on a single-ended DC power supply, and provide either a 0 to +5VDC or +1 to +6VDC output signal (wiring dependent) over their full range of displacement. The extremely linear and low noise output makes the DS-SE Series the perfect choice for interfacing to unipolar inputs of analog-to-digital converters, PLC’s, and various data collection systems.

Features

• Unipolar DC operation
• Low power consumption
• Shock and vibration tolerant
• Captive core option (available on select models)
• AISI 400 Series stainless steel housing
• CE compliant
• Calibration certificate supplied with each unit

Applications

• Factory floor automation
• Position feedback
• Data collection
• Process control
• Metrology
• Portable / battery powered measurements
• General industrial

GCA/GCD Series (Spring Loaded Design)

Description

GCA/GCD Series gage head with stainless steel construction enables the GCA/GCD performs in environments containing moisture, dirt and other contaminants. Electronic components are hermetically sealed for added protection against hostile conditions. These are heavy duty, long stroke
units with ranges up to ±2.0″ (50mm). Maximum spring force is typically 8 oz (226.8g), dependent upon probe position. The working end or probe has a removable chrome plated, hardened tool steel tip threaded to the probe with a 4-48 UNF-2A threading. Schaevitz® replacement and alternate contact tips are available. Tips are also interchangeable with AGD dial indicator tips.

Features

• CE Compliant (DC Models)
• All-Welded Construction
• Resistant to Harsh Environments
• MS-Type Connector
• Electronics Hermetically Sealed
• Calibration Certificate Supplied with Every Gage Head
• Compatible with All Schaevitz Signal Conditioners
• Special Contact Tips

Applications

• In-Process Measurements to Close Loop with PLC or CNC Controller
• Environments Requiring Hermetically Sealed Transducers
• High Temperatures (300°F for AC Units)

GCD-SE Series Precision Gage Heads

Spring-Loaded Design for 0.100 to 2.00 Range Measurement

The GCD-SEis available in five unipolar measurement ranges, with standard strokes from 0 to 0.1 inch to 0 to 2.0 inches. Operating on a single ended 8.5 to 28.0 volt dc. input, and minimal current draw, the GCD-SE is ideally suited to portable measurement applications. Hermetically
sealed, the GCD-SE is also well suited to in-process wet grinding and machining applications.

Features

• CE Compliant
• Heavy-duty, All-welded Construction
• Unipolar Ranges: 0.1” to 2.0”
• 8.5 to 28 VDC Operation
• Low Power Consumption
• May Be Battery Operated
• 0 to 5 and 1 to 6 VDC Outputs
• New Heavy Duty Front End
• Hermetically Sealed Design

Applications

• Roller Gap Control
• In-process Wet Grinding
• Hand Held Gages
• X-Y Positional Feedback

LBB Ultra-Precision Gage Heads

• Spring and pneumatic extend versions
• Linear ball bearing front end
• Extremely long life cycle
• 0.000004 inch [0.1μm] repeatability
• ±0.02 to ±0.2 inch [±0.5 to ±5mm] ranges
• Replaceable tungsten carbide contact tip
• Double shielded LVDT
• Flexible cable, resistant to chemicals
• Fluoroelastomer boot (Model dependant)
• Selection of optional electrical connectors

Description

The Linear Ball Bearing (LBB) Ultra-Precision gage heads are dimensional gaging probes engineered for highly precise
and repeatable measurements in quality control and metrology applications. The linear ball bearing system within the gaging probe reduces radial play to a minute level and minimizes friction for ultra-precise measurement.

Features

• 0.000004″ (0.10μm) repeatability
• Housing diameter options: Smooth 0.315” [8mm] & 3/8” [9.5mm], or threaded 3/8”-40 UNS-2A
• Four electrical connector options (cable end)
• Optional contact tips (4-48 UNF-2A threads only)
• Adapter provided for radial cable exit (Selected models)
• Compatible with all our signal conditioners
• Calibration report supplied with each unit

Applications

• Online inspection of automotive parts
• Process feedback for numerically controlled machine tools
• Dimensional inspection of precision parts
• Point-of-manufacture status of production process standards
• Automated data collection for factory SPC
• Robotics

HCT IS Series

The HCT is a breakthrough position transmitter for use in hazardous locations. The two-wire loop configuration allows use with a single barrier and a minimum of wire or cable.
True hermetic packaging of the coil assembly and electronics provides the maximum protection against adverse environments. A 4-20 mA transmitter output is the favored configuration for process industries and power plants. Six standard ranges are available from 0 to 0.25 inches (6.35 mm), to 0 to 10 inches (250 mm). Custom scaling is available for OEM requirements. Small quantities
are generally available for same day/next day delivery.

Features

• FM Approved
• Entity Approved – with appropriate barriers
• 4-20 mA, 2-wire operation
• Measurement ranges from 0.25” to 10.0”
• Self-Contained Electronics
• Hermetically Sealed Housing
• Nonlinearity: <0.5%, 1.0% Full Range
• Calibration Certificate Supplied with all models

Applications

• Valve Position Indication
• Outdoor use with Long Cable
• Controller Roller Gap in Rolling Mills
• Process Industries
• Ideal for Noisy Environments

CTS-420 Series – Position Transmitter System

• 4-20mA 2-wire current loop operation
• Linear stroke ranges from 0.25 to 10 inches
• Rotary version 0 to 90º
• Wide operating temperature range
• Compact size
• Remote sensor operation up to 35 ft [10m]
• MS style hermetic connector on the sensors
• Rugged splash-proof electronics housing (optional)

Description

The CTS-420 Series is a 2-wire current loop position transmitter system especially suited to measurements in process industries. Each system consists of either an HCI Series LVDT linear position sensor or an R36AS RVDT rotary position sensor, along with an electronics module which provides a 4-20mA current loop output.

Features

• 4-20mA 2-wire current loop operation
• Linear or rotary position sensing
• Zero and span adjustable
• Hermetically sealed (LVDT only)
• Imperial or metric threaded core (LVDT)
• Cable assembly up to 35ft. (optional)

Applications

• Process industry
• Remote, oil field valve position monitoring
• Ship-board turbine throttle position control
• Paper mill head box position
• Rolling mill roller gap feedback
• Damper control on fossil fuel power plants

LVM-110 – Voltage Output, LVDT/RVDT OEM Signal Conditioner

• Low cost OEM signal conditioner
• Very compact, open PC board design
• Multiple unipolar and bipolar output options
• DIP switch selectable gain and excitation
• 2.5, 5, 8 and 10kHz excitation frequencies
• Zero and span adjustment potentiometers
• Master/slave capability
• Card-edge or barrier strip connections
• Works with very low input impedance LVDTs and RVDTs

Description

The LVM-110 is a full-featured LVDT/RVDT signal conditioner that offers excellent performance on a budget. Operating on either a ±12 or ±15VDC supply voltage, the LVM-110 delivers a full range of selectable unipolar and bipolar, low noise DC voltage outputs.

Features

• Low cost/high performance
• 3-pole Butterworth filter
• DIP switch selectable gain, output and LVDT excitation frequency
• 20-turn zero suppression & span potentiometers

Applications

• Position feedback systems
• High density dimensional gaging
• Space restrictive installations
• Testing systems
• Integration into OEM machines

LiM-420 – Current Output, LVDT/RVDT OEM Signal Transmitter

• Low cost OEM 4-20mA (3-wire) transmitter
• Very compact, open PC board design
• DIP switch selectable coarse gain
• Zero and span adjustment potentiometers
• 18 to 30VDC supply voltage -25^o to +85^oC operating temperature range
• Card-edge or barrier strip connections
• Works with very low input impedance LVDTs and RVDTs

Description

The LiM-420 is an LVDT/RVDT signal conditioning transmitter specifically designed for the OEM marketplace.
Operating on an 18 to 30VDC unipolar supply voltage, the LiM-420 delivers a low noise 4 to 20mA output signal.
Compatible with many 5 and 6 electrical connection LVDT and RVDT transducers (see specifications), this compact transmitter provides excellent performance on a budget. A generous excitation drive current of 20mA, allowing operation with transducer input impedances as low as 175 Ohms.

Features

• Low cost/high performance
• Wide operating temperature range
• Six selectable gain ranges
• 20-turn zero & gain adjustment potentiometers
• Threaded standoffs for panel/box mounting

Applications

• Valve position feedback
• Roller gap sensing
• Paper head box position
• Coater knife gap
• Materials testing machines

PML-1000 – LVDT/RVDT Panel Meter

• Large 5 digit LED display
• AC line or AC/DC low voltage powered
• 0-10VDC and 4-20ma outputs (user selectable)
• RS422/485 communications (optional)
• Selectable excitation voltage & frequency
• Easy ‘Fast-Cal’ calibration feature
• Min, Max, Average, Zero, Tare & Hold functions
• 2 programmable logic inputs for remote control
• 2 programmable function keys
• 1/8th DIN standard panel mounting

Description

The PML-1000 is an AC line powered LVDT/RVDT panel meter featuring multiple software functions. Ideal for industrial and test applications, it features a large, easy to read 5 digit variable brightness LED display. For control applications, it has an isolated 0-10 VDC, 0-20mA or 4-20mA scaleable output. A buffered, un-scaled, high speed 125Hz analog output is also available, for highly dynamic applications requiring the fastest response. An optional Serial (2 or 4 wire) RS422/485 communications interface is also available to allow connection to data loggers, PLCs and computers. With a user-selectable transducer excitation of 1 or 3 VRMS, and 2.5 or 10 kHz, the PML-1000 is compatible with all standard Measurement Specialties LVDTs and RVDTs.

Features

• ‘Fast-Cal’ automatic calibration
• Min, Max, Average, Zero and Hold functions
• Voltage and current outputs
• Remote RS-485 monitoring (optional)
• Low voltage operation (optional)

Applications

• Process monitoring
• Test stands/data collection
• Part classification
• Position monitoring
• Test & Measurement

ATA-2001 – Analog LVDT/RVDT Signal Conditioner with digital calibration

• 115 or 220 VAC line powered
• Microprocessor controlled calibration
• Superior digital filtering
• Selectable excitation frequencies & amplitudes
• Voltage and current outputs
• 250 to 1000Hz selectable frequency response
• Auto fall-back synchronization
• Splash-proof front panel with status LEDs
• 1/8 DIN standard panel mounting

Description

The ATA-2001 is a general purpose, AC line-powered, LVDT/RVDT analog conditioner with digital setup and
calibration. The embedded microprocessor generates a PWM-shaped sine wave and handles all calibration functions. It also controls the demodulation, filtration and synchronization of the LVDT or RVDT transducer
signal. All settings are stored in non-volatile memory for restoration on power up. Zero, Gain and Phase adjustments are accomplished via the use of splash-proof front panel pushbuttons and digital voltage dividers. Intended for the most demanding industrial applications, the ATA 2001 is CE certified, and has been rigorously tested to the highest industrial standards for EMI, RFI and ESD.

Features

• Microprocessor controlled & non-volatile memory
• Phase shift compensation
• Auto fall-back synchronization
• Rugged extruded aluminum housing

Applications

• Power-gen turbine control
• Head box slice lip position control
• Roller gap position feedback
• Precision metrology labs