Specify resolution at your required bandwidth. A 0.05 μm resolution requirement is not a statement of absolute accuracy or performance at every sampling rate.
SENSOR SYSTEMS / ECS-NCDT
Eddy current displacement & distance sensors
Continuous, non-contact measurement for spindle thermal growth, precision positioning and conductive-target gap metrology.
Specify this system ↗
Machine-tool spindles · precision stages · roller gaps
Define the conditions behind the measurement
Confirm shielded or unshielded installation, target thickness and curvature. Nearby metal and adjacent probes can change the calibration.
For spindle thermal growth, separate sensor drift from machine expansion and define the operating temperature cycle. For semiconductor fixtures, identify the conductive surface actually being measured.
Listed ranges and interfaces are inquiry options. Approved ratings, drawings and calibration data belong to the selected configuration.
Metal grade, thickness and curvature change the curve.
Request factory linearization for AISI 4140 / 42CrMo, aluminum 6061, stainless steel 304 / 316, copper or titanium. Confirm the representative target and calibration conditions in your quote.
| Decision | Eddy current displacement system | Standard inductive proximity switch |
|---|---|---|
| Measurement | Continuous distance or dynamic motion | Target present / absent |
| Output | Calibrated voltage, current or digital distance | Discrete ON / OFF |
| Specify | Range, resolution at bandwidth, target and calibration | Switching distance, hysteresis and switching frequency |
Analog inductive distance sensors also exist. Compare the actual measurement principle and performance, rather than the category name alone.
Before you approve the measuring system
Can the same calibration be used on steel and aluminum?
Do not assume so. Specify the material grade, thickness and curvature and agree the calibration curve for your target.
Can a replacement probe be mixed with an existing driver?
Only after the exact probe, electrical length, driver, target and output curve have been qualified together. Connector fit alone is insufficient.
What does a configuration quote include?
Request a matched probe, cable and conditioner, selected mounting accessories, calibration conditions, performance evidence and confirmed price and delivery.
ECS-NCDT / CONFIGURATION REQUEST
Build the probe, cable and conditioner together.
Include a mounting adapter, armored cable or portable calibration fixture in the request below.