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LVDT sensor WTG / WTH

Inductive displacement transducer for numerous industrial applications in production, inspection, quality assurance, test and laboratory. The Probe sensor with a Case diameter of 12mm has a coil unit calibrated to 80mV/V with fully symmetrical coil construction according to the LVIT differential choke principle / half bridge circuit. The proven design guarantees high temperature stability with very low temperature drift and very good linearity. The precision bearing enables high load cycles with very low wear. In the WTH version, the Probe has an 8 mm dia. clamping shank for mounting by means of a clamp/clamping flange. Numerous versions are available with different connections of plugs and cables as well as for operation of increased temperature.

Special versions according to customer specifications are possible.

 

Important features

  • Nominal stroke: 2 mm up to 100 mm
  • Calibrated to 80mV/V for easy exchange
  • Case diameter: 12 mm stainless steel
  • Operating temperature: -50 ... 80 °C, option up to 120 °C
  • Protection class (DIN 40050): IP 54

Technical data

    WTG / WTH 2
 WTG / WTH 5 WTG / WTH 10 WTG / WTH 20 WTG / WTH 50 WTG / WTH 100
Nominal stroke mm ±1 ±2,5 ±5 ±10 ±25 ±50
Mechanical stroke mm ±1,5 ±3,5 ±6 ±11 ±26 ±52
Dimension A mm 8 12 15 20 35 65
Dimension B mm 80 87 140 172 250 410
Spring force at centre position (appr.) N 0,7 0,8 1,1 1,5 2,7 2,7
Spring constant (approx.) N/mm 0,045 0,056 0,040 0,067 0,085 0,050
Sensor weight (approx.) g 40 50 80 90 130 200
Core weight (approx.)* g 5 6 12 15 18 28
Nominal output (approx.)** mV/V 80
Sensitivity (approx.) mV/V/mm 80 32 16 8 3,2 1,6
Temperature coefficient of zero   ±0,05 % / 10K ±0,02 % / 10K
Temperature coefficient of span   ±0,1 % / 10 K ±0,05 % / 10K

* Probe tip with M2,5 standard thread; probe tip can be released/exchanged by slightly warming
** Calibration accuracy: typically ±1 mV/V, max. ±3 mV/V

Properties

  WTG / WTH 2 ... 100
Excitation voltage 1 ... 5 V
Carrier frequency 5 ... 10 kHz
Linerarity* 0,5 % F.S.O., option: 0,25 % und 0,1 %
Stroke marks on core rod (option)* Option: zero mark (all models) and stroke ends (10 mm up)
Operating temperature* -50 °C ... +80 °C, option: up to 120 °C
Protection class (DIN 40050) IP 54

* Specify options on order

Model list

    Abbr. WTG / WTH WTG / WTH WTG / WTH WTG / WTH
Series
 WTG  
WTH (8 mm shank)  
Stroke 5 ... 100   2 5 10 20 ... 100
Connection Leads none -- -- -- --
Axial cable K
Radial cable Q
Axial connector LX
Radial connector LR
Linearity (FSO) 0,5 %  
0,25 %  
0,1 %   --
Options
 High operating temperature 1) /120°C optional optional optional optional
Stroke marks on core rod (see picture) /M optional optional 2) optional optional
PTFE cable 3) /TF optional optional optional optional
Reduced spring force /GF optional optional optional optional
Bellow 4) (see picture) /FB optional optional optional --
Customised dimension A /A xx optional optional optional optional
Probe tip not glued /NV optional optional optional optional

1) PTFE cable with versions K and Q
2) zero mark only
3) with versions K and Q only
4) not with option /M and not with /120°C

Options

Option /M

Stroke marks on core rod

lvdt sensor measuring tip detail

Option /FB

Bellow on core rod (up to 10 mm)

increased dim. A
lvdt sensor wtg wth probe tip detail

Dimensional drawing / Connection types

Axial cable (K)

Core channel not continuous

dimensional drawing of wtg wth axial cable

Radial cable (Q)

Core channel not continuous

1) only WTH

dimensional drawing of wtg wth radial cable

Axial connector (LX)

Core channel not continuous

dimensional drawing wtg wth axial connector

Radial connector (LR)

Core channel not continuous

1) only WTH

dimensional drawing wtg wth radial connector

Electrical connection

  Litze K / Q LX / LR
Type of connection
 PTFE leads 250 mm long PE-cable 2,5 m long
Option: PTFE cable		 LEMO ERA.1S.303.CLL
(Mating plug supplied)
Pin configuration
 wtg wth pin configuration leads wtg wth pin configuration cable connector lr lemo
Power supply + Blue Blue 3
Power supply - Red Red 2
Measuring signal + White + Yellow White 1
Measuring signal - -- -- --
Gegenstecker
(wird mitgeliefert)		 -- -- LEMO FFA.1S.303CLAC52

Downloads

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icon-pdf-blueInstallation / technical information

icon-pdf-blueProduct group overview

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