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
|
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Linearity* |
< ±0,5 % F.S.O.
Options: ±0,25 %; 0,1 % (excl. DLH 50) |
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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

Axial cable connection

Cable connection Q
Core channel continuous

Plug connector R
Core channel continuous

Plug connector RS

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 | |||||
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 |