Product Overview
The SensorsX SX-DLNC Series comprises LVDT (Linear Variable Differential Transformer) sensors designed for linear displacement and position measurement. Based on electromagnetic induction, the sensors provide contactless electrical sensing without sliding contacts. The series includes split-type, spring-return, pneumatic, pen-type, and specialized configurations, with measurement ranges and output options varying by model. Available outputs include 0–5 V, 4–20 mA, and RS-485, while certain AC-excited models require an external transmitter for conditioned DC outputs.
Main Features
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Resolution down to 0.1 μm; repeatability ≤0.01% FS or 1 μm, depending on the model
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Contactless electromagnetic sensing without sliding electrical contacts
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Precision-guided construction with a service life of over 10 million cycles
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Repeatable zero position
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Rugged and durable construction
Product Application
Typical Applications
| Rail transit |
Precision measurement |
Machinery and equipment |
| Building structures |
Petroleum, petrochemical, and coal mining |
Cement industry |
| Bridge and structural monitoring |
Machine tool and tool positioning |
Valve-position detection and control |
Technical Data
| Measurement |
| Product Type & Principle |
LVDT displacement sensor; electromagnetic induction |
| Measurement Range |
2–500 mm; selectable ranges vary by configuration |
| Linearity Error |
±0.25%, ±0.35%, ±0.5%, or ±2% FS; digital options include 0.1% FS |
| Power & Output |
| Output Signal |
0–5 V, two-wire 4–20 mA, RS-485, or AC; configuration-dependent |
| Supply Voltage |
9–28 VDC (voltage/digital); 15–28 VDC (two-wire current output) |
| Supply Current |
≤12 mA (voltage output); two-wire current output is loop-powered |
| AC Excitation |
1–3 Vrms, 5 kHz sine wave (AC-excited versions) |
| External Transmitter |
Required for pen-type sensors to obtain DC or RS-485 output |
| Custom Output |
0–10 V upon request |
| Mechanical & Materials |
| Body Diameter |
Ø8, Ø12, or Ø20 mm (split-type options) |
| Electrical Connection |
Cable or connector; shielded TPU cable Ø3 or Ø4 mm; 1, 2, or 5 m |
| Pressure Rating |
35 MPa (valve-spool configurations) |
| Air Pressure / Contact Force |
Pneumatic: 0.22–0.45 MPa / 0.3–0.5 N; pneumatic pen: 0.03–0.06 MPa / 0.1–0.35 N; spring-return pen: 1 N |
| Performance |
| Repeatability |
≤0.01% FS or 1 μm, depending on configuration |
| Service Life |
Over 10 million cycles (applicable models) |
| Resolution |
Down to 0.1 μm; digital: 16-bit |
| Zero Position |
Repeatable zero; split-type electrical zero at range midpoint |
| Environmental Conditions |
| Operating Temperature |
−25 to +85 °C; high-temperature valve-spool version: −40 to +125 °C |
| Protection / Temperature Coefficients |
IP64, IP65, or IP67, configuration-dependent; pen-type rating unspecified. Zero-point and sensitivity coefficients: each ≤0.025% FS/°C |
