T-375-A Series LVDT AC Miniature Free Core Position Sensor

OVERVIEW

• Free core AC LVDT sensor
• Miniature 0.375" (9.5mm) O.D. size body, low core mass
• Stroke Lengths from ±0.025 inch to ±1.0 inches (0.65mm to 25mm)
• Non-linearity less than ±0.25% of FS
• Sealed to IP61
• Applications: Laboratory R&D Materials Testing, Valve Position Sensing, Factory Automation


MADE IN THE USA


The HGSI T-375-A series AC Linear Variable Differential Transformer (LVDT) Position Sensors are used to monitor and track the linear
motion or position of a target. These miniature sensors are ideal for use in industrial and laboratory applications including automotive
R&D, motorsports, industrial, motion control, medical, military and aerospace.

These swaged-end sensors are constructed entirely of stainless steel and are resistant to dust and temperature. The coil windings are
sealed using an epoxy potting compound providing excellent protection against shock and vibration.

The T-375-A series will operate with most any conventional differential input AC LVDT signal conditioner, but operation with ratiometric
signal conditioning is not recommended. HGSI offers a full line of compatible AC LVDT signal conditioners. Please contact us for a
recommendation.

Options:

Variations
LVDT Bi-Polar Measuring Range
SKU
T-375-A-025
Availability
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$999.00
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TECHNICAL SPECIFICATIONS

Technical Specifications

Input Voltage:

3 Vrms (nominal)

Input Frequency:

400 Hz to 10 kHz

Linearity Error:

≤ ± 0.15% of FSO typical, ± 0.25% maximum

Null Voltage:

0.5% of FS

Repeatability:

0.01% of FS

Hysteresis:

0.01% of FS

Operating Temperature:

Standard Version: -54 to +135°C (-65 to +275°F)
High Temperature Version: -54 to +204°C (-65 to +400°F)

Thermal Coefficient:

< -0.02%/°C of FS (< -0.01%/°F of FS)

Humidity:

90% RH

Housing:

Stainless steel

Contact Tip:

32 AWG Teflon™ insulated, 12” length (305 mm)

Life Expectancy:

> 100 million cycles

Shock Rating:

1000g, 11 mS

Vibration Rating:

20 g to 2 kHz

IP Rating:

IEC IP61

Country of Manufacture:

Made in the USA

 

DOCUMENTS & DOWNLOADS

PRODUCT NUMBERS

T-375-A Series Miniature AC LVDT Position Sensor

Product Overview

The T-375-A Series AC Linear Variable Differential Transformer (LVDT) from Harold G. Schaevitz Industries is a miniature, free-core linear position sensor engineered for precision in compact spaces. With a 0.375 inch (9.5 mm) outer diameter and low mass core , this sensor delivers high-performance linear displacement measurements in space-constrained environments without compromising accuracy or durability.

Designed for laboratory, R&D, medical, and embedded industrial applications, the T-375-A series offers stroke lengths ranging from ±0.025 inch to ±1.0 inch (±0.65 mm to ±25 mm) and non-linearity of less than ±0.25% of full scale, making it ideal for fine motion tracking where precision and reliability are paramount.

Key Features

  • Miniature 0.375" (9.5 mm) diameter body for tight installation spaces

  • Free core design for versatile mechanical coupling

  • Stroke lengths from ±0.025 to ±1.0 inches (±0.65 mm to ±25 mm)

  • Non-linearity ±0.25% of full scale

  • Sealed to IP61 for basic protection against dust

  • Epoxy-potted windings for shock and vibration resistance

  • Made in the USA

Miniature Design for Compact Applications

The T-375-A Series is purpose-built for applications where space is limited and precision is non-negotiable. The compact 9.5 mm housing allows for seamless integration into instrumentation, tooling, medical devices, and small-scale automation equipment. The lightweight, low-mass core ensures fast dynamic response, particularly valuable in applications involving rapid motion or acceleration.

This miniature form factor makes the T-375-A ideal for embedded sensor configurations and portable testing devices.

Rugged Construction for Reliable Operation

Despite its small size, the T-375-A is constructed for durability. The stainless steel housing offers resistance to mechanical wear and corrosion, while the epoxy-potted coil assembly protects internal components from shock and vibration. The sensor’s IP61 rating ensures basic protection against environmental dust and debris.

Applications

Laboratory & R&D

Ideal for test setups requiring fine resolution and minimal space usage:

  • Miniature test stands

  • Research instrumentation

  • Displacement tracking in micro-mechanical systems

Valve Position Sensing

Compact enough to fit inside or alongside valve housings for:

  • Pneumatic and hydraulic control systems

  • Small flow control valves

  • Microfluidic or biomedical dispensing systems

Factory Automation

Suitable for integration into small industrial systems and robotics:

  • Precision assembly lines

  • Linear actuator position tracking

  • Automated testing and gauging

Medical & Aerospace

Built for use in sensitive, high-performance environments:

  • Surgical and diagnostic equipment

  • Aerospace instrumentation and mechanisms

  • Compact mechatronic assemblies

System Integration

The T-375-A Series is compatible with standard AC LVDT signal conditioners that support differential input. HGSI offers a range of compatible signal conditioners—please contact our technical team for guidance on selecting the right model for your setup.

Why Choose the T-375-A?

  • Ultra-compact footprint for tight installations

  • Contactless AC LVDT technology for long-lasting reliability

  • Excellent stroke-to-size ratio for high-efficiency integration

  • Resilient design with potting and stainless steel housing

  • Made in the USA

Precision Sensing in a Compact Package

The T-375-A Series Miniature AC LVDT is a high-performance position sensing solution for applications where space is limited but measurement accuracy and durability cannot be compromised. With flexible integration options, proven AC LVDT technology, and rugged miniature construction, the T-375-A provides the reliability engineers depend on in testing labs, medical systems, industrial automation, and beyond.

Need assistance integrating the T-375-A into your system?
Contact Harold G. Schaevitz Industries today for product support and recommendations tailored to your application.

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