Linear Position Sensors
An Overview of Linear LVIT Position Sensor Technology
Linear Variable Inductance Transducers (LVITs) offer an excellent price-to-performance ratio compared to other linear position sensing technologies such as LVDTs and linear potentiometers. The sensor's overall length only increases by a relatively small percentage beyond their stroke. As a result, LVITs may offer better stroke-to-length ratio than many other linear position sensor technologies.
Because LVITs are inductive, the sensing element is contactless with no friction issues or moving parts that can wear out. As is common for inductive sensors, they exhibit outstanding repeatability, with resolution limited only by the electronics used with them. LVITs offer the performance of contactless sensors like LVDTs or magnetostrictive sensors, but at lower price; comparable to industrial grade linear potentiometers.
| Performance Comparison Chart | Potentiometer | LVIT | LVDT |
| Cost | ** | *** | **** |
| Accuracy | ** | **** | **** |
| Lifespan | ** | **** | **** |
| Operating Temperature Range | ** | *** | **** |
| IP Rating | IP61 | IP67 | IP61 to IP68 |
| External Signal Conditioning Required? | No | No | Yes |
Harold G. Schaevitz Industries (HGSI) offers a complete lineup of linear position sensors.
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• Ruggedized Linear Potentiometer
• Stroke lengths available from 25 to 300 mm (1 to 12 inches)
• Rod End Joints for simple mounting
• Environmental rating of IP61
• Compact Size, only 0.90" (22 mm) diameter
• Ruggedized Linear Potentiometer
• Stroke lengths available from 300 to 700 mm (14 to 28 inches)
• Rod End Joints for simple mounting
• Environmental rating of IP61 (Dust tight, Water resistant)
• 1.4" (36 mm) diameter
• Spring Loaded Linear Potentiometer
• Stroke lengths available from 10 to 100 mm (0.4 to to 4 inches)
• Environmental rating of IP61
• Compact Size, housing is only 18 mm x 18 mm
• Spring Loaded Miniature Linear Potentiometer
• Stroke lengths available from 5 to 100 mm (0.2 to to 4 inches)
• Environmental rating of IP61
• Compact Size, housing is only 16 mm diameter
• Linear Variable Inductive Transducer (LVIT)
• Stroke lengths available from 25 to 200 mm (1 to 8 inches)
• ILPS-19 is Automation & Motorsports duty
• Sensing element is contactless, virtually wear-free
• Tested to over 110 million cycles
• Rod End Joints for simple mounting
• Environmental rating of IP67 (Dust tight, Short term water immersion)
• 0.75" (19 mm) diameter
• A more robust alternative to Linear Potentiometers
• Linear Variable Inductive Transducer (LVIT)
• Stroke lengths available from 50 to 450 mm (2 to 18 inches)
• ILPS-27 is Industrial duty
• Sensing element is contactless, virtually wear-free
• Tested to over 110 million cycles
• Rod End Joints for simple mounting
• Environmental rating of IP67 (Dust tight, Short term water immersion)
• 1.05" (27 mm) diameter
• A more robust alternative to Linear Potentiometers
• Linear Variable Inductive Transducer (LVIT)
• Stroke lengths available from 100 to 450 mm (4 to 18 inches)
• ILPS-45 is Heavy duty
• Sensing element is contactless, virtually wear-free
• Tested to over 110 million cycles
• Rod End Joints for simple mounting
• Environmental rating of IP67 (Dust tight, Short term water immersion)
• 1.75" (45 mm) diameter
• A more robust alternative to Linear Potentiometers
• Linear Variable Inductive Transducer (LVIT)
• Stroke lengths available from 12.5 to 100 mm (0.5 to 4 inches)
• Sensing element is contactless, virtually wear-free
• Tested to over 110 million cycles
• Spring loaded for simple mounting
• Environmental rating of IP67 (Dust tight, Short term water immersion)
• 0.75" (19 mm) diameter
• A more robust alternative to Linear Potentiometers
• Linear Variable Inductive Transducer (LVIT)
• Stroke lengths available from 6.5 to 100 mm (0.25 to 4 inches)
• Lower cost of ownership than a potentiometer or LVDT
• Tested to over 110 million cycles
• Spring loaded for simple mounting
• Environmental rating of IP67 (Dust tight, Short term water immersion)
• 0.75" (19 mm) diameter
• A more robust alternative to Linear Potentiometers