OVERVIEW
• Free Core design
• AC LVDT
• Stroke lengths from ± 0.05 to ± 10 inches (± 1.3mm to ± 254mm)
• Non-Linearity better than ± 0.25% of FS
• Stainless steel housing rated to IP61
• Applications: Laboratory R&D Materials Testing, Valve Position Sensing, Factory Automation
MADE IN THE USA
The HGSI T-750-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 ruggedized 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-750-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:
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) |
Thermal Coefficient: | < -0.02%/°C of FS (< -0.01%/°F of FS) |
Humidity: | 90% RH |
Housing: | Stainless steel |
Lead Wires: | 28 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 USA |
DOCUMENTS & DOWNLOADS
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Product Overview
The TH-750-A Series from Harold G. Schaevitz Industries is a hermetically sealed AC Linear Variable Differential Transformer (LVDT) designed to provide precise linear position feedback in the harsh environments. With a 0.750" (19 mm) diameter stainless steel body and stroke lengths ranging from 0.100 to 20 inches (2.5 mm to 508 mm), this sensor offers reliable operation across a wide range of industrial and research applications.
The free core design allows for mechanical integration, while the IP68 rating ensures outstanding resistance to water, dust, and environmental extremes—making it ideal for a range of applications in factory automation, valve control, and laboratory testing among others.
Key Features
Free Core design for coupling with moving components
Stroke lengths from 0.100 to 20 inches (2.5 mm to 508 mm)
0.750" (19 mm) stainless steel body
Non-linearity better than ±0.25% of full scale
Hermetically sealed to IP68 for environmental protection
Epoxy-potted coil windings for superior shock and vibration resistance
Compatible with most differential input AC LVDT signal conditioners
Made in the USA with industrial-grade materials
Built for Demanding Environments
The TH-750-A series is engineered for precision and durability in both lab and industrial field settings. Its hermetically sealed stainless steel construction makes it highly resistant to contaminants, corrosion, and moisture—perfect for deployment in wet, dusty, or high-vibration environments.
The free core design allows for easy integration with external mechanisms via a core extension rod, making it adaptable to a wide variety of mechanical configurations.
Applications
Laboratory & R&D
Material testing machines
Displacement validation systems
Lifecycle endurance test rigs
Valve Position Sensing
Hydraulic or pneumatic valve stroke monitoring
Energy sector flow control feedback
Process automation requiring high reliability
Factory Automation
Motion tracking in robotic assemblies
Industrial actuator feedback
Linear monitoring in harsh production environments
Aerospace & Military Systems
Ruggedized motion sensing in mobile defense platforms
Aircraft testing environments
Equipment requiring sealed, compact, and accurate displacement sensors
Environmental Protection
With an IP68 rating, the TH-750-A is capable of long-term use in wet or submerged environments. Its epoxy-potted windings and sealed housing protect sensitive internal components from water ingress, dust, and chemical contaminants, while resisting damage from continuous shock and vibration.
Electrical Integration
The TH-750-A is compatible with most standard differential input AC LVDT signal conditioners. Use with ratiometric signal conditioning is not recommended. HGSI offers a wide range of signal conditioners matched to ensure optimal system performance. Contact us for personalized assistance with your application.
Why Choose the TH-750-A?
Long stroke ranges up to 20 inches
Hermetically sealed for full environmental protection
High linearity and accuracy across full range
Free core design enables system integration
Compact form factor with industrial durability
Proudly made in the USA
Need help choosing the right configuration?
HGSI’s application engineers are here to help you integrate the TH-750-A into your system with confidence. Contact us today for a technical consultation.