Schreiber Linear LVDT Sensor SM21 Series Ø 10 mm PCD 20.0 mm
- Manufacturer: Schreiber Messtechnik
- Category: Displacement, LVDT, LVDT Unamplified, SENSORS
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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