Schreiber Linear LVDT Sensor SM21 Series Ø 10 mm PCD 20.0 mm
- Manufacturer: Schreiber Messtechnik
- Category: Displacement, LVDT Unamplified, SENSORS, Sensores LVDT
The Schreiber SM21 Series displacement transducer constitutes the foundational standard in LVDT technology Miniature for dimensional measurement and position control in the automation industry. Manufactured with a cylindrical body of stainless steel and NiFe alloy. 10 mm in diameter, Its architecture is based on a purely analog, passive electromagnetic half-bridge principle. Lacking integrated circuitry, the SM21 is inherently entitled to a EMI immunity In total, this ensures a noise-free metric reading even when mounted next to high-voltage lines or CNC servomotors.
For its usability in pneumatic and mechanical applications, this probe is firmly assembled with clamps approved to a metric size of PCD 20.0 mm, acting fluidly as a drop-in replacement for test load cells and metrology benches. It is considered one of the linear position sensors The most versatile in the German line, as it fully transfers 4-20mA, 0-10V or ±10V conditioning to the dynamic external DIN rail modules (SM10 or SM12 series). Withstanding impact loads of 250 g SRS and offering IP68 protection in its vulcanized terminations, the SM21 is synonymous with high-speed volumetric capture. Request a 3D plan or quote here.
Properties
| Engineering Specification | Technical Value SM21 |
|---|---|
| Measurement principle | Inductive LVDT (Standard Passive Half-Bridge) |
| External diameter | 10.0 mm (Metric h7 tolerance) |
| Pitch Circle Diameter (PCD) | Fixing holes at 20.0 mm (SM906.20x clamp) |
| Useful measuring range | Up to 20mm (5mm | 10mm | 15mm | 20mm) |
| Deviation from linearity | < 0.5% (Standard version) | < 0.25% (Optional short range) |
| Raw output signal | Pure AC inductance variables (To be conditioned) |
| IP protection rating | IP66 (Connector format) | IP68 (Radial cable injection) |
| ambient temperature range | -40 ºC to +85 ºC (Thermal drift < 0.005% / ºC) |
| Mechanical shock tolerance | 250 g SRS (Excitation width between 20 and 2000 Hz) |
| Envelope composition | Special ferrous alloy NiFe and V2A stainless steel |
| Additional electronics required | Schreiber SM10, SM11, SM12 or SM14 external series |
| Mobile core parameters | Stainless steel through-bolt Ø 3 mm with M2 male fixings |
| Total Eulerian Weight | Volumetric mass of 20 grams (Isolated core 4 g) |
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