LVP-DC
DC-DC LVDT Position Sensors
±2.5 to ±500 mm
4–20 mA · 0–10 V · ±10 V · RS485
Explore configuration ↗LVP SERIES / LINEAR VARIABLE DIFFERENTIAL TRANSFORMERS
LVDT sensors.
Precision starts
with the right interface.
From a free-moving core to a conditioned PLC signal. Configure DC-LVDT position transducers, gauging probes and passive AC sensors around your measurement.
DC / AC configurationsFree core / guided / springMatched conditioning
INDUCTIVE POSITION / LIVE PRINCIPLEAC EXCITED
Vout ∝ VS1 − VS2 Phase-sensitive demodulation gives direction.
01Define the stroke
± range or total travel
± range or total travel
02Choose the mechanics
Core, guidance & contact
Core, guidance & contact
03Match the signal chain
Excitation, output & load
Excitation, output & load
SELECT BY INTEGRATION
Five families. One complete position measurement.
Select the interface first, then confirm the range, envelope and environment with engineering. All listed ranges are configuration requests.
| Family | Measurement / interface | Start here when… |
|---|---|---|
| LVP-DC ↗ | ±2.5 to ±500 mm 4–20 mA · 0–10 V · ±10 V · RS485 | Direct to the PLC. |
| LVP-PRB ↗ | ±0.5 to ±25 mm AC · half-bridge · DC · digital variants | Bring the datum to the part. |
| LVP-MIN ↗ | ±0.5 to ±50 mm 4 / 5 / 6-wire AC · remote conditioning | Measure inside the envelope. |
| LVP-HT ↗ | ±2.5 to ±300 mm Passive AC · remote LVP-AMP | Keep electronics out of the heat. |
| LVP-AMP ↗ | 1 / 2.5 / 5 / 10 kHz excitation requests 0–10 V · ±10 V · 4–20 mA · RS485 | Specify the whole measurement chain. |
SENSOR TO CONTROLLER
A position sensor for each integration problem.
LVP-PRB
Spring-Loaded LVDT Gauging Probes
±0.5 to ±25 mm
AC · half-bridge · DC · digital variants
Explore configuration ↗
LVP-MIN
Miniature & Micro LVDT Sensors
±0.5 to ±50 mm
4 / 5 / 6-wire AC · remote conditioning
Explore configuration ↗
LVP-HT
High-Temperature AC-LVDT Transducers
±2.5 to ±300 mm
Passive AC · remote LVP-AMP
Explore configuration ↗
LVP-AMP
LVDT Amplifiers, Conditioners & Calibration
1 / 2.5 / 5 / 10 kHz excitation requests
0–10 V · ±10 V · 4–20 mA · RS485
Explore configuration ↗MECHANICAL SELECTION
Free core, guided rod or spring contact?
Free unguided core
Separate the moving core from the coil body. External guidance must maintain clearance; the electromagnetic sensing element has no sliding electrical contact.
Captive guided rod
A guided assembly simplifies linkage. Review side load, rod alignment, bearings and usable travel before integrating.
Spring-return probe
A contact tip follows the measured surface. Review tip force, pre-travel, overtravel and contact wear.
Concept schematics. Non-contact induction does not make bearings, springs or contact tips wear-free.
ENVIRONMENT & DUTY
What happens around the sensor matters.
Contact force changes the measurement.
Review tip geometry, part stiffness and probe guidance for multi-point automotive and thickness fixtures.
Review gauging probes ↗Separate the winding from the electronics.
Review continuous temperature, pressure, medium and remote cable before choosing an AC-LVDT chain.
Review high-temperature requests ↗Minimize the intrusion of the sensor.
Specify the miniature envelope, moving mass and alignment for triaxial fixtures and extensometry.
Review miniature LVDTs ↗REPLACEMENT ENGINEERING
Begin with the exact model on the drawing.
Macro Sensors / TE, Solartron / AMETEK, HBM, Honeywell, Kavlico and G.L. Collins references need mechanical, electrical and environmental review.
Build a replacement request ↗BEFORE YOU CONNECT
Three wires do not always mean DC.
Distinguish conditioned DC, passive AC, inductive half-bridge and digital interfaces before applying power.
Check the LVDT wiring guide ↗CONFIGURATION RELEASE
Define the acceptance test before the sensor.
Stroke & linearity
Agree bipolar range, null, sensitivity and residual error against a reference displacement stage. State whether error is % of full range or reading.
Repeatability & noise
Define approach direction, probe force, electronics, filtering, temperature and sample method. Resolution alone does not describe repeatability.
Thermal & installation
Check temperature drift, warm-up and mounting stress. Confirm pressure, medium, cable and sealing conditions for the complete assembly.
A proposed review plan, not a claim that a specific LVP model has completed qualification.
Resolve the LVDT selection questions first.
What is an LVDT sensor?
A linear variable differential transformer uses an excited primary and two secondary coils to detect the position of a movable core. A matched demodulator converts the differential AC signal into signed displacement.
Can I connect an LVDT directly to a PLC?
A conditioned DC-LVDT may provide voltage, current or digital output. A passive AC-LVDT requires compatible excitation and demodulation. Check the actual model and controller input.
Is a free-core LVDT maintenance-free?
The sensing principle has no sliding electrical contact. External guidance, bearings, contact tips and seals still have application-dependent wear and service requirements.
Can you review an existing sensor for replacement?
Send the full model, drawing, range convention, excitation/output, connector pinout and operating conditions. Compatibility is reviewed for the exact configuration before quotation.
REQUEST A CONFIGURATION REVIEW
Tell us what
moves. And how
you need to read it.
LVDT sensor, probe or complete signal chain.
Send the working range, mechanical arrangement and electrical interface. Add the original model when reviewing a replacement.
[email protected] ↗Drawings, CAD and calibration documentation are configuration-specific. Engineering will confirm the proposed scope, price and schedule.