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The LD400 Series miniature dc output LVDT transducers provide a method of measuring displacements up to ±5 mm (±0.20 inch) with very high accuracy and infinite resolution. They have a free-guided armature incorporating Delrin bearings, which provide near frictionless motion to detect the smallest movement the associated instrumentation is capable of identifying. These transducers utilize a precision linear variable differential transformer (LVDT) as the measuring source, together with hybrid IC’s which include an oscillator, demodulator, and filter; together, they comprise a self-contained unit that accepts dc input and provides dc output relative to armature position. The unit’s high linearity and low mass of moving parts is ideally suited to applications in civil, mechanical, chemical and production engineering.
SPECIFICATIONS
ELECTRICAL
Linearity:0.3% FS
Excitation: 10 to 24 Vdc regulated
Energizing Current at 10 Vdc: LD400-1 (10 mA); LD400-2.5 (10 mA); LD400-5 (13 mA)
Response Time: 100 Hz for -3 db
Ripple: <1% FS
Thermal Effect:
Zero: 0.01% FS/°C (0.006% FS/°F)
Sensitivity: 0.02% FS/°C (0.011% FS/°F)
Temperature Range: -20 to 80°C (-4 to 175°F)
Electrical Connection: 2.9 m (9 ft) shielded, color coded cable
Calibration: Provided with a transducer output impedance of 2.4 KOhms into a calibration load of 20 KOhms at 20°C (68°F) Variations in these parameters will change performance.
MECHANICAL
Threaded Core: M2 thread
Core Material: Ni/Fe - Radio Metal 50
Case material: 400 series stainless steel
CONNECTIONS
Electrical Connections:
Red: + Excitation
Blue: - Excitation
White: + Signal*
Green: - Signal
Yellow: no connection
*White and Red in phase for positive inward displacement
For full product specifications and dimensions view pdf file in "Related Links" below
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