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Woodward 8904-305
Product Name: Linear Position Sensor (Woodward part 8904-305), cross-referenced to Macro Sensors VRT-1250-8000-0887 DC-operated LVDT.
Overview: A long-stroke DC LVDT of the Macro Sensors VRT-1250 series, supplied as Woodward 8904-305. The 8000-thou (8.0 in) travel makes it suitable for large linear actuators and wide-range position feedback.
Detailed content
Technical Specifications:
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Series: VRT-1250
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Supplied Woodward number: 8904-305
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Equivalent Macro Sensors model: VRT-1250-8000-0887
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Travel: 8.0 in (203.2 mm) class
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Output: pre-calibrated DC (0–±10 V DC class)
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Excitation: DC input, integrated electronics
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Linearity: ≤ ±0.25 % FS (family)
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Repeatability: < 0.01 % FSO; Hysteresis: < 0.01 % FSO
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Operating temperature: −20 °C to +70 °C
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Ingress protection: IEC IP-68
Material & Structure: Stainless-steel body; hermetically sealed coil; sealed axial/radial connector.
Working Principle: Inductive core-position sensing converted to calibrated DC output by onboard electronics.
Application Scenarios: Long-stroke actuator feedback, large steam-valve stem position, compressor and turbine fuel-valve travel, test-stand displacement measurement.
Installation Requirements: Mount rigidly to avoid core side-loading; align travel axis with the measured motion; use the correct mating connector.
Usage Notes: Keep within stroke limits; maintain sealing integrity in harsh or submerged environments.
