LVDT sensor WLR
Cylinder displacement transducer (unpressurised) with hole flange for installation in the cylinder base with internal sensor and core rod. The LVDT sensor with a case diameter of 12mm has a coil unit calibrated to 80mV/V with a fully symmetrical coil design according to the LVIT differential choke principle with half-bridge circuit. The design guarantees high temperature stability with very low temperature drift. Variants with different carrier frequencies as well as for increased temperature and dynamics are available.
Special versions with modified flange dimensions, versions for high acceleration and with integrated electronics according to customer requirements are possible.
Important features
- Nominal stroke: 10 mm up to 500 mm
- Mechanical stroke: 20 mm up to 516 mm
- Symmetrical half-bridge circuit LVIT
- Operating temperature: -50 ... 80 °C, option: up to 120 °C
- Case diameter: 12 mm
- Protection (DIN 40050): IP 64
Technical data
WLR 10 |
WLR 20 | WLR 40 |
WLR 50 |
WLR 100 |
WLR 150 |
WLR 200 |
WLR 250 |
WLR 300 |
WLR 400 |
WLR 500 |
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Nominal stroke | mm | ±5 | ±10 | ±20 | ±25 | ±50 | ±75 | ±100 | ±125 | ±150 | ±200 | ±250 |
Mechanical stroke | mm | 20 | 30 | 60 | 60 | 120 | 170 | 220 | 270 | 320 | 420 | 516 |
Dimension A | mm | 30 | 35 | 45 | 50 | 75 | 100 | 125 | 150 | 175 | 225 | 275 |
Dimension B | mm | 65 | 85 | 130 | 130 | 230 | 340 | 440 | 550 | 660 | 860 | 1050 |
Sensor weight (approx.) | g | 440 | 460 | 480 | 480 | 520 | 550 | 600 | 630 | 680 | 750 | 840 |
Core weight (approx.) | g | 6 | 8 | 9 | 9 | 12 | 15 | 20 | 25 | 30 | 40 | 50 |
Sensitivity | mV/V/mm | 16 | 8 | 4 | 3,2 | 1,6 | 1,07 | 0,8 | 0,64 | 0,53 | 0,40 | 0,32 |
Properties
WLR 10 ... 500 |
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Nominal output signal* | 80 mV/V | |||||
Supply voltage | up 5 V | |||||
Carrier frequency | 5 ... 10 kHz | |||||
Linearity** | ±0,25 % F.S.O, option: 0,1 % | |||||
Temperature coefficient of zero | ±0,02 % / 10 K | |||||
Temperature coefficient of sensitivity | ±0,05 % / 10 K | |||||
Operating temperature** |
-50 °C ... +80 °C, option: up to 120 °C | |||||
Protection class according to DIN 40050 | IP 64 |
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Dimensional drawings / Connection variants
WLR

Radial cable connection
Teflon cable 150 mm long, assembled with 6-pin Molex connector
Core channel continuous
