ECS Non-Contact Metrology
INDUSTRIAL SELECTION / ENGINEERING INQUIRY
Industrial Eddy Current Sensor Selection Guide
Start with the measurement. Specify the complete system.
Selection and engineering inquiry guide. Confirm the exact assembly, drawings, calibration scope, performance
and supply terms in the written quotation.
Supplier construction references. Confirm dimensions and electrical specifications on the selected assembly
drawing.
ECS review family
Measurement task
Information to send
ECS-NCDT / Gap and
precision displacement
Spindle growth, positioning and
conductive-target gap measurement.
Target grade and geometry; gap interval; bandwidth
and noise metric; controller input.
ECS-3300 / Shaft vibration
and thrust
Radial vibration, eccentricity and axial-position measurement review.
Probe, extension and conditioner labels; target;
supply polarity; scale and monitor input.
ECS-AUTO / Speed and
phase reference
Shaft marks, turbo blade passage and
dynamic test requests.
RPM envelope; blade/mark drawing; material; gap;
trigger and pulse requirements.
ECS-HT / Hot-zone
measurement
Ceramic-head and remote-electronics
configuration review.
Continuous/peak temperature and duration for each
component; pressure and atmosphere.
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ECS Non-Contact Metrology
INDUSTRIAL SELECTION / ENGINEERING INQUIRY
Choose the parts and the signal your machine
needs.
Use the original component labels when reviewing an existing system. For a new design, start with the target and
controller input, then select the complete measurement chain.
Requested part
Information that defines the request
Probe / sensing head
Thread or flange, body and unthreaded lengths, cable exit, target and required gap.
Extension cable
Exact references, nominal electrical length, connector pair, armor and routing environment.
Signal conditioner / driver
Matched probe system, supply polarity, output definition, mounting and controller input.
Gap / vibration transmitter
Gap or vibration quantity, range, unit, filtering and loop/interface requirements.
Mounting bracket / adapter
Housing drawing, adjustment access, thread, side clearance and environmental sealing scope.
Static-gap calibration fixture
Target grade and shape, travel and reference-instrument requirements; agree the test scope.
Output meaning belongs on the request
Output path
Measured quantity
Confirm with the assembly
Raw proximity voltage
DC gap and dynamic voltage
Confirm sign, scale, operating gap, supply and monitor input.
Position voltage
Continuous displacement
Confirm voltage span, reference ground, bandwidth and controller
input.
Gap current
A defined gap interval
Specify current span and the two physical gap endpoints.
Vibration-severity
current
A defined vibration quantity
State displacement/velocity quantity, units, detector and frequency
band.
Digital measurement
Configured displacement
data
Confirm protocol, update rate, filter and host interface.
Nominal length example: 1 m probe lead + 8 m extension = 9 m total. Equal labels check arithmetic only; confirm
the exact components, target, output curve and monitor together.
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ECS Non-Contact Metrology
INDUSTRIAL SELECTION / ENGINEERING INQUIRY
Keep the installation and calibration in the same
review.
Installation input
What to include
Metal target
Exact grade, heat treatment, thickness, flat size or shaft diameter.
Working gap
Minimum/maximum gap, motion direction and available mechanical clearance.
Probe holder
Thread/flange drawing, recess, nearby metal and adjacent-probe positions.
Cable route
Integral and extension labels, connector access, bend/routing limits and protection.
Temperature zones
Tip, target, transition, cable, connector and electronics separately; peaks and duration.
Electrical interface
Supply polarity, output meaning, signal reference and the receiving input diagram.
Agree the test record before selection
•  Identify the assembled components and serial numbers.
•  Use a representative target and the intended mounting geometry.
•  Agree displacement points and measured output for the static curve.
•  Request reference instrument, traceability and uncertainty information.
•  Define dynamic response and thermal testing separately from static gap calibration.
Separate conditioner construction
Integrated sensor construction
Supplier construction references. Confirm dimensions and electrical specifications on the selected assembly
drawing.
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ECS Non-Contact Metrology
INDUSTRIAL SELECTION / ENGINEERING INQUIRY
Send a procurement brief that engineering can
act on.
Request section
Information / agreement
Existing equipment
Complete original probe, cable, driver and monitor references; photographs of labels.
Measurement requirement
Application, gap range, material/geometry, bandwidth and component temperatures.
Items and quantity
Complete system or named individual parts, accessory quantities and destination country.
Required documents
Assembly/dimension drawing, wiring, configuration datasheet, STEP and agreed test evidence.
Acceptance scope
Static curve, signal meaning, installation checks and any dynamic/environmental testing.
Supply agreement
Confirm price, delivery, shipping, warranty and required approvals in writing.
Use the published selection pack
Document
Purpose
Selection guide PDF / text
Published architecture, interface and inquiry guidance.
Installation request worksheet
Blank mechanical, cable and electrical requirement fields.
Calibration request worksheet
Blank target, test-point, instrument and uncertainty request fields.
Configuration-specific files
Request the exact drawing, datasheet, STEP and test record for the proposed assembly.
Download the latest files: eddycurrentsensor.com/resources
Send the brief and original labels: inquiry@eddycurrentsensor.com
Primary engineering background
Baker Hughes 141194 Rev. AN, extension-cable ordering information
Kaman 860214-001, target, mounting and calibration sections
Original-system references explain engineering principles. Confirm ECS configuration-specific evidence and any
protection-service qualification with the equipment owner.
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