LINEAR VARIABLE DIFFERENTIAL TRANSFORMER (LVDT-10A)


 


A Linear Variable Differential Transformer (LVDT) is an Electromechanical  Transducer that measures very small linear movements in structure or a mechanical device. Mechanical motion is translated in to an Electrical  signal that contains position information. A LVDT is essentially a Differential Transformer whose Primary coil and two Secondary coils are symmetrically spaced on a cylindrical former and iron core is moveable. When the primary coil is energized by an A.C. Source, Voltage is induced in two secondary coils. These coils are connected in series in such a manner that the induced voltages are 1800 out of  phase.

·      Weight : 1Kg. Approximately

·      Dimension : 195mm x 315mm x 75mm

APPLICATION  :

Include  dimensional  gauging  and  production  inspection,  linear  motion  measurements  and  feedback  output  for  fine  positional  control  in  machine  tools,  large  vibration  amplitude  measurements  at  very  low  frequencies,  strain  measurements  in structures,  displacement  measurement,  force  and  surface  finish  measurement.

THE  SET – UP  CONSISTS  OF  : 

(i)         LVDT   ± 10, mm.
(ii)               Calibration  jig  fitted  with  dial  gauge  25, mm  least  count  0.01, mm.
(iii)             Low  Noise  Fixed  Frequency  Oscillator  2 KHz / 5 KHz.
(iv)             3 ½  Digit  LED,  Digital  Display.

FOLLOWING  FEATURES  CAN  BE  STUDIED  : 

(i)                 Input  Output  Characteristics.
(ii)               Determination  of  linear   range.
(iii)             Calibration as displacement meter and to determine the sensitivity of the instrument.
(iv)             To  study  the  phase  difference  between  two  coils.

NOTE  : 

Since  the  dial   gauge  provided  in  this  set – up has  a  least count  of  0.01, mm  while  with  a  mm  scale  we  can  measure  a  small  valve  upto  1, mm  only  the  Model – LVDT – 10 A  is  a  real  instrumentation  tutor  for  LVDT.

 

 Note: There may be any change in specification due to continuous R & D without notice.

 

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