LVDT & RVDT Displacement Transducers
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PRODUCT GUIDE LVDT TRANSDUCERS FOR INDUSTRY

Questions frequently arise concerning the choice of LVDT. Our applications engineers are always willing and able to make recommendations as to the correct LVDT for your application. However the following notes are offered as a There are two main categories of LVDT, namely AC input. AC output; and DC input. DC output. Within these two categories the choice of LVDT will be dependent on a number of factors and can be summarised as follows: 1) Environmental considerations; 2) Mechanical fixing; 3) Output from transducer required; 4) Linear range required. Consideration of the above will...

The LVDT is an electromechanical device that produces an electrical signal whose amplitude is proportional to the displacement of the transducer core. The LVDT consists of a primary coil and two secondary coils symmetrically spaced on a cylindrical former. Fig. 1. SECONDARY PRIMARY SECONDARY |SECONDARY| PRIMARY [SECONDARY Core position Core at-100% Core at 0 Core at-*-100% (NULL POSITION! CORE DISPLACEMENT FIGURE 3. LVDT OUTPUT VS CORE POSITION. A magnetic core inside the coil assembly provides a path for the magnetic flux linking the coils. The electrical circuit is configured as in Fig. 2...

LVDT Selection Chart. DS1159

DISPLACEMENT TRANSDUCER AC OPERATION ■ SPRUNG, GUIDED OR FREE CC SMALL DIAMETER BODY ■ LOW COST CO These Linear Variable Differential Transformer Displacement Transducers feature a 12.5mm (0.5") diameter body for OEM applications and use in restricted spaces. They are designed for operation on low voltage AC supplies at frequencies from 50Hz to 5KHz and aresupplied complete with a free core and extension rod assembly. O The stainless-steel body, bore tube and extension rod permit corrosion-free operation in most environments. Colour-coded flexible PTFE lead-out wires of ^ 0.5mm (18") length...

-M p Hole lapped M2 x P.T.F.E. Wires I 1 5.0 deep. Both ends. 457.0 (18") Core guide ORDERING INFORMATION/OPTIONS Different lengths of integral lead out wires Ordering Information When ordering request unit by Type No. and IS No. or state requirements by specifying options. We reserve the right to alter the specification without notification SENSONICS LIMITED /

DC/DC LV.D.T. The DM series of DC/DC linear transducers cover the range ± 2.5mm to * 50mm and are intended as a general purpose instrument. As with all other Sensonics LVDT's they are robustly housed with impregnated coils and internally potted so that they are suitable for use in the majority of industrial applications. Uses include extensometers, hydraulic actuators, float positions, thickness measurements, geophysical parameters, earth movements . . . The series is available with the lightweight core supplied as a basic unattached item (DMF) or with the core attached to an extension rod...

DEEP. BOTH ENDS BLUE INPUT-VE GREEN OUTPUT+VE GOING WITH CORE DISPLACED INWARDS FROM NULL SCREEN ISOLATED FROM INSTRUMENT GUIDED CORE = DMG SERIES SPRUNG LOADED = DMS SERIES VTYPE NUMBERS The IS' Numbers above indicate a unique transducer, e.g. IS 067 is a Spring loaded — 5nm stroke 12 Volt excitation unit, or DMS 5 12 Volt. SENSONIGS LIMITED /

WATERPROOF LVDT DISPLACEMENT TRANSDOCER FULLY SEALED FULLY SUBMERSIBLE FREE CORES HIGH ACCURACY The DM-W series waterproof linear variable differential transformers are designed for applications requiring total submersion or for use in situations where high humidity or condensation may be expected. The DM-W series of DC input DC output LVDTs consist of a fully sealed body housing the impregnated coils and internally potted electronics such that these units are suitable for the majority of submersible applications. For submersion in liquids up to approximately 20m depth (or equivalent...

TUBE ADAPTOR & OLIVE Ordering Information Order units by specifying Type No. and IS No. SENSONIGS LIMITED / We reserve the right to alter the specification without notification.

DISPLACEMENT TRANSDUCER LARGE LINEAR RANGES The economy E Series LVDT displacement transducers are basic Linear Variable Differential Transformers intended for 0 E M applications or similar low cost requirements. The straight cylindrical body, flying lead out wires, large bore and free unguided unrestrained core facilitate the incorporation of the device into other assemblies which may be unique to the user, e.g. force or pressure transducers, mechanical, hyd'aulic or pneumatic actuators, tensile testers etc. Similarly, because of these versatile characteristics, these LVDTs form the heart...

BODY LENGTH ETCHED P.T.F.E. INSULATED TINNED ORDERING INFORMATION/OPTIONS Additional displacement ranges: including up to — 20 inches Different lengths of integral lead out wires Fitted extension rod and core guides Ordering Information When ordering ieciuest unii by type No. and IS No. 01 state lepuirements by specifying options. VWo reserve ihe right to alter the sLiecificalion witl~out not'*icat on. SENSONICS LIMITED *

WIDE MEASUREMENT RANGE INFINITE RESOLUTION HIGH ACCURACY MAXIMUM LIFE UNSTABILISED SUPPLY FREE OR GUIDED CORES The Sensonics DE series of DC input-DC output transducers offer a simple, inexpensive solution to many applications involving linear displacement measurement or monitoring. These include displacement monitoring and control functions in industrial processes, position feedback elements in servo hydraulic control systems; measuring elements in extensometers in materials testing systems. This DE Series extends from - 25 mm to - 300 mm and is the standard Sensonics DC-DC economy range...

thread each screened cable * Core displaced inwards from null. UIDED CORE DE SERIES

DISPLACEMENT TRANSDUCER INDUSTRIAL FORMAT PTFE BUSHES PLUG, CABLE OR FLEXIBLE CONDUIT OUTLETS (CABLE OUTLETS) SUBMERSIBLE VERSIONS The SR Series LVDT Displacement Transducer consists of a magnetically shielded liner variable differential transformer contained within the outer stainless steel body. The robust construction makes the SR series ideal for applications requiring a durable, accurate, industrial position feedback transducer. Various configurations are available to accommodate most applications. Spring loaded or guided core, connector or integral cable. Spring loaded versions are...