Guided and Non-Guided LVDT AC

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Guided and Non-Guided LVDT AC

When it comes to precise, contactless linear position measurement, LVDT AC sensors offer unmatched durability and accuracy. Our range includes both Guided and Non-Guided core configurations to suit a wide variety of application needs. Guided LVDT AC sensors feature an internal mechanism that aligns the core within the sensor body, simplifying installation and ensuring smooth, controlled motion — ideal for dynamic or automated systems where consistent core positioning is essential. Non-Guided LVDT AC sensors, on the other hand, provide maximum flexibility by allowing external guidance of the core. This makes them perfect for applications with custom mechanical setups or where the measured object itself acts as the guide. With rugged construction, high resolution, and excellent repeatability, our Guided and Non-Guided LVDT AC sensors are built to perform in demanding industrial and test environments — no matter how you guide them.

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Guided and Non-Guided LVDT AC

LVDT-ISAG

ISAG LVDT with Rod Ends

AC coupled LVDT 2-200mm

  • Ranges from 2mm to 200mm
  • Output mV/V AC coupled
  • 0.5% linearity as standard
  • IP65 with options to IP68
R-750

R-750 Series LVDT for General Purpose

AC LVDT for general purpose

  • Ranges from 1.27mm to 254mm
  • Output mV/V
  • 0.15% linearity
  • Stainless steel housing
  • Outside diameter 0.750 inches (19.05mm)
R-812

R-812 Series LVDT for General Purpose

AC LVDT for general purpose

  • Ranges from 1.27mm to 254mm
  • Output mV/V
  • 0.15% linearity
  • Stainless steel housing
  • Outside diameter 0.812 inches (20mm)
M-375

M-375 LVDT for Rugged Environments

AC LVDT for rugged environments

  • Ranges from 0.63mm to 50mm
  • Output 0 to mV/V
  • 0.15% linearity
  • Operating temp -55°C to 135°C
  • Outside diameter 0.375 inches (9.53mm)
HT-1000

HT1000 LVDT for Extreme Temperature Environments

AC LVDT for Extreme High Temperature

  • Ranges from 12.7mm to 25.4mm
  • Output mV/V
  • 0.5% linearity
  • Operating temp -55°C to 538°C
HA-750

HA-750 & HAR-750 Series

Hermetically sealed AC LVDT

  • Ranges from 1.27mm to 250mm
  • Output mV/V
  • 0.15% linearity
  • In-line and right-angle connector options
LVDT-IKAL

IKAL LVDT 8mm Diameter Non Guided

Short stroke LVDT 8mm external diameter

  • Ranges from 2mm to 20mm
  • Output mV/V
  • 0.5% linearity (0.25% option)
  • Ingress Protection IP65
LVDT-IMAL

IMAL LVDT M12 thread Non Guided

Short stroke LVDT M12 external thread

  • Ranges from 2mm to 20mm
  • Output mV/V
  • 0.5% linearity (0.25% option)
  • IP65 with options to IP68
LVDT-ISAL

ISAL LVDT Non Guided Armature

Long stroke AC coupled LVDT

  • Ranges from 2mm to 200mm
  • Output mV/V
  • 0.5% linearity (options to 0.1%)
  • IP65 with options to IP68
P-520

P-520 Series LVDT for High Pressure Environments

LVDT for high pressure environments

  • Ranges from 22.86mm to 580mm
  • Output mV/V
  • 0.15% linearity
  • Stainless steel housing
  • Outside diameter is 0.520 inches (13.2mm)
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Frequently Asked Questions About Guided and Non-Guided AC LVDTs?

Need Help with Guided and Non-Guided AC LVDTs?

Learn about the differences between guided and non-guided linear position sensors, their core movement mechanisms, and applications in precision measurement and industrial automation.

The key difference lies in the core movement mechanism.

    Guided AC LVDTs include an internal guidance system (like bearings or bushings) to control the motion of the core.
    Non-Guided AC LVDTs have a free-floating core and rely on the user's external mechanism to guide core movement.

A guided AC LVDT has an internal core connected to a shaft or probe that is supported and aligned by precision bearings or bushings. This makes it ideal for applications where consistent probe alignment and controlled motion are required.

A non-guided AC LVDT features a loose, unattached magnetic core that must be moved by an external actuator or mechanism. It offers greater mechanical flexibility and is often used in harsh or customized setups.

    Built-in alignment and mechanical stability
    Easier integration in applications where the probe contacts the measured surface directly
    Simplified mechanical design for direct displacement sensing

Greater design flexibility for custom applications, No mechanical wear since the core is not physically constrained, Ideal for environments with extreme vibration or where non-contact motion transfer is needed.

Both types provide a differential AC voltage output that varies with the core's position. This output typically requires an external signal conditioner to convert it into a standard DC voltage or digital signal.

They typically operate with an AC excitation voltage of 1–10 V RMS, at frequencies ranging from 2 kHz to 10 kHz, depending on the sensor design.

Precision dimensional gauging, Quality inspection systems, Automated thickness measurement, Industrial actuators with known probe alignment.

Hydraulic/pneumatic cylinder position feedback, High-vibration or high-temperature systems, Custom test setups where the core is independently guided, OEM integration where the guiding mechanism is already in place.

Yes. Both guided and non-guided LVDTs are calibrated during setup with their signal conditioners to ensure accurate displacement measurement over the required range.