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LVDT sensor DLH

Extremely short inductive universal and cylinder displacement transducer for measuring ranges up to 500mm for numerous industrial applications in hydraulic cylinders, valves, production, testing, especially in testing machines and mechanical engineering. The displacement transducer with a case diameter of 12mm and a 3mm core has a coil unit with fully symmetrical coil construction according to the LVDT differential transformer principle / full bridge circuit with very good linearity. The excellent ratio of measuring length to overall length allows installation even in confined spaces with up to 40% space saving.

Versions with different connections of plugs and cables as well as for operation of increased temperature and dynamics are available.

Important features

  • Nominal stroke: 50 mm up to 500 mm
  • Installation length: 100 mm up to 600 mm
  • Case diameter: 12 mm
  • Output signal: approx. 130 mV/V (versions with 80 mV/V possible)
  • Connections: Braided wire, Axial/radial cable, Radial connector, Special versions
  • Cable type/length: PE or PTFS, 2.5 m standard
  • Carrier frequency: 5 kHz (other frequencies on request)
  • Linearity: 0.5 %, 0.25 %, 0.1 %
  • Repeatability: 0.1%
  • Temperature drift: 0.1% / 10K
  • Operating temperature: -40 ... 80 °C (option up to 180 °C)
  • Protection (DIN 40050): IP68

Technical data

    DLH 50 DLH 100 DLH 200 DLH 300 DLH 400 DLH 500
Nominal stroke mm ±25 ±50 ±100 ±150 ±200 ±250
Mechanical stroke mm 55 105 210 320 420 520
Installation length B mm 100 160 260 370 480 600
Dimension A (other dimensions optional)* mm 55 80 135 190 240 290
Sensor weight (approx.) g 50 70 120 170 210 260
Core weight (approx.) g 7 10 15 20 26 32
Typical nominal output signal @ 5 kHz** mV/V 133 135 125 134 150 130

* Specify options on order
** Guide values only, determined independently of phase

Properties

    DLH 50 ... 500
Displacement transducer diameter D mm 12 h9
Core rod diameter d mm 3,6 (incl. Teflon coating)1)
Carrier frequency 5 kHz
Recommended measuring amplifiers MBI 46.31

Supply voltage (rms) up to 5 VAC
up to 5 VAC
Linearity*
< ±0,5 % F.S.O.
Options: ±0,25 %; 0,1 % (excl. DLH 50)
Temperature coefficient of zero (typ.) ±0,1 % / 10 K
Temperature error of sensitivity (typ.) ±0,2 % / 10 K
Operating temperature* -40 °C ... +80 °C, Option: up to 120 °C (Linearity ±0,25 % or ±0,5 %)
Protection class according to DIN 40050 IP 64

* Specify options on order

Notes

1) The Teflon coating of the core rod is only for mechanical sliding and has no influence on the electrical properties of the LVDT sensor.

Versionsübersicht

    Abbr. DLH DLH
Measuring range see technical data   50 ... 500 50 ... 500
Connection variant Braided wire none AWG 30 AWG 30
Axial cable 1) 2) K
Radial cable 1) 2) Q
Axial connector 2) 3) LX
Radial connector 3) R --
Radial connector 3) RS --
Linearity (FSO) 0,5 %  
0,25 %  
0,1 %  
Options High operating temperature 1) /120°C -- optional
Custom dimension A /Axx optional optional
80 mV/V nominal signal 4) 5) 6) /80mVV optional optional

1) Standard: PE cable, at 120 °C: Teflon cable
2) Core channel not continuous
3) Mating connector supplied
4) with leads: B+22
5) If necessary, observe clamping restrictions in the connection area (see drawing)!
6) not with lin. 0.1 %; Core rod without Teflon sheathing

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Dimensional drawings / Connection variants

Braided wire

Core channel continuous

dimensional drawing dlh braided wire

Axial cable connection

dlh axial cable connection

Cable connection Q

Core channel continuous

dlh cable connection q

Plug connector R

Core channel continuous

dlh plug connector r

Plug connector RS

dlh plug connector rs

Plug connector LX

dlh plug connector lx

Electrical connection and pin configuration

  Litze K / Q R RS LX
Connection type PTFE leads 250 mm long PE cable 2.5 m long
Option: PTFE cable		 Amphenol C 091
Appliance plug		 Amphenol 3102 A
Flange connector		 LEMO
ERA.1S.304.CLL
Configuration dlh-anschluss-litze dlh-anschluss-litze dlh-steckeranschluss-r dlh-steckeranschluss-rs dlh-steckeranschluss-lx
Supply + White White 2 B 2
Supply - Blue Blue 3 C 3
Measuring signal + Red Red 1 A 1
Measuring signal - Black Black 4 D 4
Mating connector
(supplied)		 -- -- Amphenol C 091
Cable box		 Amphenol 3106 A LEMO
FFA.1S.304.CLA 57

 

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