LVDT sensor DOI

Pressure-resistant cylinder displacement transducer with perforated flange and integrated electronics for installation in the cylinder base with internal sensor and plunger. The displacement transducer with a housing diameter of 20mm is pressure-resistant up to 320bar as standard and has a coil unit completely encapsulated in the housing with a fully symmetrical coil design according to the LVDT full bridge circuit. This achieves good linearity and high temperature stability with low temperature drift. The electronics in 2-wire technology is supplied with ± 20...30V and provides an output signal of 4...20mA.

Special versions with modified flange dimensions and in other pressure classes are possible according to customer requirements.

Important features

  • Nominal stroke: 25 mm up to 1000 mm
  • Pressure resistance: 320 bar as standard
  • Case diameter: 20 mm
  • Symmetrical full bridge circuit LVDT
  • Connections: Radial cable / Radial connector
  • Operating temperature: 0 ... 60 °C
  • Protection class (DIN 40050): IP 65

Technical data

    DOI
25
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50
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100
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150
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200
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250
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300
DOI
400
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500
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600
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800
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1000
Nominal stroke mm ±12,5 ±25 ±50 ±75 ±100 ±125 ±150 ±200 ±250 ±300 ±400 ±500
Max. mechanical stroke mm 30 55 105 160 210 260 320 420 520 630 830 1030
Dimension A mm 40 55 80 105 130 155 180 230 280 340 440 540
Mounting length B mm 60 100 140 220 300 380 480 600 730 860 1120 1400
Transducer weight (approx.) g 1000 1050 1100 1200 1350 1450 1600 1800 2000 2200 2600 3000
Core weight (approx.) g 12 14 16 20 25 28 30 35 40 50 65 80

Properties

    DOI 25 ... 400
Supply    20 ... 30 V / 40 mA, stabilised
Output signal   4 ... 20 mA
Allowable load   max. 400 Ω
Static resolution virtually infinite
Cut-off frequency 100 Hz
Linearity error*  0,5 % F.S.O.
Option: 0,25 %
Temperature coefficient of zero  ±0,1 % / 10 K
Temperature coefficient of span ±0,2 % / 10 K
Allowable pressure operation pressure: 320 bar, test pressure: 450 bar
Operating temperature 0 °C ... +60 °C
Protection class according to DIN 40050 IP 65

* Select option when ordering

Dimensional drawings / Connection variants

DOI

dimensional-drawing-doe

Radial wire interface

Teflon wire 2.5m long

dimensional-drawing-doi-radial-wire-interface

Radial connector interface

Mating connector supplied

dimensional-drawing-doe-radial-connector-interface

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