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  3. Linear position sensors
  4. LVDT sensors
  5. HSD-Series LVDT Position Sensor

HSD-Series LVDT Position Sensor

Hermetically sealed DC operated LVDT designed for a wide range of position measurement applications


Key features

  • Ranges of ±0.015" to ±10" [±0.38 mm to ±250 mm]
  • In-line connector (HSD) or through-bore (HSDR)
  • Environmentally sealed to IEC IP-68
  • ±15 V DC input, pre-calibrated 0 to ±10 V DC output
  • Non-linearity less than ±0.25% of FRO
  • Mating plug for connector included

About the HSD-Series Hermetically sealed DC-operated LVDT position sensor

The HSD and HSDR 750 Series of 3/4 inch (19 mm) diameter DC operated LVDTs are designed for a wide range of position measurement applications. These are rugged hermetically sealed sensors, constructed entirely of stainless steel, and intended for general industrial use. The coil windings are sealed against hostile environments to IEC standard IP-68 and electrical termination is through a sealed axial (HSD) or radial (HSDR) connector. The radial connector offers two important benefits. First, it results in a through-bore design, which permits access to either or both ends of the LVDT’s core for better mechanical support and core guidance, and easier cleanout in dusty or dirty locations. The second advantage of the radial connector is shorter installed length compared to units of the same range with axial connectors. The mating connector plug is supplied with the unit.

HSD and HSDR 750 Series sensors use built-in electronics to provide the desirable features of an LVDT, such as frictionless operation and dynamic response, with the added convenience and simplicity of DC input and precalibrated DC output. They are designed to operate in conjunction with PLCs, digital indicators, A/D converters, computer-based data processors and QC data collection systems.

Available in ranges of ±0.015 inch (±0.38 mm) to ±10.0 inches (±250 mm), HSD/HSDR 750 Series sensors feature the high resolution, excellent repeatability, and low hysteresis associated with LVDT technology.

Applications for HSD-Series

  • Machine tool positioners
  • Materials testing extensometers
  • Hydraulic cylinder position
  • Valve position sensing
  • Automatic assembly equipment
  • Corrosive environments

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Technical Specifications

Specification Value
Frequency response (-3db) 250Hz (nominal)
Full scale output 0 to ±10 VDC
Input frequency 2.5 to 3.0kHz
Measurement range .381 to 254mm
Non-linearity ±.25% FR
Operating temperature -20 °C to +70 °C
Output noise & ripple <10mV rms
Shock survival 100g
Vibration tolerance 20g to 2kHz

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HSDR-Series LVDT Position Sensor

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  • In-line connector (HSD) or through-bore (HSDR)
  • Environmentally sealed to IEC IP-68
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HSTA-Series LVDT Position Sensor

  • Ranges of ±0.05" to ±10" [±1.25 mm to ±250 mm]
  • 400°F (200°C) operating temperature
  • Environmentally sealed to IEC IP-68
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HSTAR-Series LVDT Position Sensor

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  • 400°F (200°C) operating temperature
  • Environmentally sealed to IEC IP-68
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