Series 210-220 Long Stroke AC LVDTs
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Series 210-220 Long Stroke AC LVDTs The Series 210-220 AC LVDTs offer precision linear displacement measurements for applications with strokes from 0.5 to 60 inches. The transducers have been designed with an extremely low temperature coefficient, and nonlinearity of less than ±0.25% F.S. Variable pitch secondary windings are incorporated into the design with computer controlled winding machines to minimize package length to stroke ratio, and assure a uniform product. KEY FEATURES Ranges from ±0.25” to 60” Stainless Steel Construction High Sensitivity TRANSDUCER SPECIFICATIONS MODEL FULL STROKE ±Inches (mm) MAX. USABLE STROKE ±Inches (mm) BODY LENGTH L Inches (mm) CORE LENGTH Lc Inches (mm) CORE MASS Grams INPUT IMPEDANCE Ohms DC INPUT RESISTANCE Ohms OUTPUT IMPEDANCE Ohms PHASE ANGLE Degrees (Specifications at reference frequency) NON-LINEARITY ≤ ±0.25% FS (Best Fit Straight Line) REFERENCE FREQUENCY Models 0215-0000 thru 0222-0000, 7.0 KHz; Models 0223-0000 thru 0226-0000, 3.0 KHz INPUT VOLTAGE NULL VOLTAGE TEMPERATURE COEFFICIENTS < ±0.001% FS/°F Zero, < ±0.01% Reading/°F Span TEMPERATURE RANGE OUTER HOUSING AND BORE LINER 300 Series Stainless Steel Chrome Plated Iron/Nickel Alloy

DIMENSIONAL DIAGRAM Both Ends CORE EXTENSION RODS (Sold Separately) The recommended core extension rods are made of nonmagnetic stainless steel and are sized to allow the transducers to operate over their full range. Extension rods from models with longer strokes may be used to facilitate installation. Using extension rods shorter than recommended may reduce the LVDT's usable measurement range. Thread reliEf-

DC-DC System Operation Modified Versions To facilitate prototyping, or in instances where a DC in - DC out system is preferred, any of the standard, high temperature or vented Series 210-220 can be used in conjunction with the Series 1000 Oscillator/Demodulator. The DC system provides the same level of performance as a stand-alone AC LVDT. The high level DC output voltage can be directly interfaced with analog circuits as well as data acquisition cards, PLCs, or A/D converters. Each Oscillator/Demodulator can be customized to provide a zero offset and nonstandard gain, meeting specific user...

SERIES 210-220 MODIFIED FOR USE IN HIGH PRESSURE ENVIRONMENTS The High Temperature version of the Series 210-220 has been designed to operate in temperatures from -67°F to +400°F. The LVDTs are identical electrically and mechanically to the standard Series 210-220 transducers, providing the same high level of performance and reliability. To achieve the elevated operating temperature, materials such as the epoxy, solder, and magnet wire have been replaced by their high temperature equivalents. Note: All electrical and physical specifications are the same as the standard Series 210-220 LVDTs....