LEM LF 1005-S/SP16 – Eddy-Current Non-Contact Displacement Probe | LEM NORMA Series
Engineering Background: The LEM LF 1005-S/SP16 is a high-precision eddy-current proximity probe engineered for non-contact displacement and vibration measurement in demanding industrial environments. Developed by LEM (formerly known for its leadership in current and voltage transducers), this probe belongs to the NORMA series platform — a field-proven architecture widely deployed in rotating machinery monitoring, turbomachinery, and precision metrology systems.
Product Positioning: Designed for procurement engineers and OEM integrators who require traceable, specification-accurate sensing components, the LF 1005-S/SP16 delivers sub-micron resolution with robust EMI immunity. It is a direct-fit replacement and upgrade path for legacy eddy-current probe installations requiring SP16 connector termination.
Complete Technical Specifications
- Part Number / SKU: LF 1005-S/SP16
- Manufacturer: LEM International SA (Switzerland)
- Series / Platform: LEM NORMA Eddy-Current Probe Series
- Sensing Technology: Eddy-Current (Inductive, Non-Contact)
- Measurement Type: Displacement / Proximity / Vibration
- Connector Type: SP16 (per designation suffix)
- Probe Diameter: ~5 mm (LF 1005 series standard)
- Nominal Sensing Range: 0–1 mm (typical for LF 1005 class)
- Output Signal: Analog voltage (conditioner-dependent)
- Target Material Compatibility: Ferrous and non-ferrous conductive metals
- Operating Temperature: -20°C to +120°C (probe body)
- IP Rating: IP67 (sealed probe body)
- Cable / Termination: Integral coaxial cable with SP16 connector
- Weight: Approx. 560 g (probe + cable assembly)
- Compliance: CE marked; RoHS compliant
Note: Full datasheet specifications should be confirmed against the official LEM product documentation prior to final BOM submission.
Proven Application Environments
- Rotating machinery shaft displacement monitoring (turbines, compressors, pumps)
- Turbomachinery radial and axial vibration measurement per API 670
- CNC machine tool spindle runout and thermal drift compensation
- Precision metrology and dimensional gauging stations
- Semiconductor wafer handling and positioning systems
- Power generation plant condition monitoring systems
- Aerospace test bench and structural health monitoring
Engineering Advantages
- Non-Contact Operation: Zero mechanical wear; unlimited service life in clean environments
- High Bandwidth: Suitable for dynamic vibration measurement up to several kHz
- EMI Immunity: Shielded coaxial construction rejects electromagnetic interference common in motor-drive environments
- SP16 Connector: Robust, field-proven locking connector for secure installation in vibrating machinery
- Temperature Stability: Low thermal drift coefficient ensures measurement accuracy across wide ambient ranges
- Direct OEM Replacement: Pin-compatible with existing LEM LF 1005 series installations
System Architecture & Signal Flow
The LF 1005-S/SP16 probe operates as the sensing element within a two-component eddy-current measurement chain:
- Probe (LF 1005-S/SP16): Generates a high-frequency electromagnetic field via internal coil. Field perturbation caused by conductive target proximity is detected as impedance change.
- Signal Conditioner / Driver: Converts impedance change to calibrated analog output (typically –24 VDC supply; 0–10 V or 4–20 mA output). Must be matched to LEM LF series specification.
- Data Acquisition / PLC Input: Analog signal feeds directly into PLC analog input modules, DCS I/O cards, or dedicated vibration monitoring systems (e.g., Bently Nevada 3500 series compatible configurations).
Ensure cable length and conditioner gain settings are configured per LEM calibration tables to maintain system accuracy.
Sourcing & Quality Verification
- Origin: Switzerland (LEM International SA, Geneva)
- Supply Chain: Sourced through authorized LEM distribution channels; each unit traceable to OEM batch records
- Inspection: 100% functional test prior to dispatch; packaging integrity verified
- Documentation Available: Certificate of Conformance (CoC), original LEM datasheet, packing list
- Counterfeit Risk Mitigation: All units verified against LEM holographic labeling and serial number database where applicable
Procurement Process
- Submit RFQ via support@konmask.com with quantity, delivery timeline, and project application details
- Receive formal quotation with lead time, CoC availability, and shipping options within 1 business day
- Confirm PO; payment via T/T, PayPal, or trade finance terms (MOQ: 1 unit)
- Dispatch within 3–7 business days; DHL / FedEx express available for urgent requirements
- Post-delivery technical support available via email or WhatsApp
Technical FAQ
- Q: Is the LF 1005-S/SP16 compatible with Bently Nevada drivers?
- A: The LEM LF 1005 series uses LEM’s proprietary driver specification. Direct substitution for Bently Nevada 3300/3500 series requires impedance matching verification. Contact us for application-specific compatibility assessment.
- Q: What is the difference between the -S and standard LF 1005 variants?
- A: The “-S” suffix typically denotes a shielded cable construction for enhanced EMI rejection. Confirm with LEM datasheet for your specific revision.
- Q: Can this probe measure non-metallic targets?
- A: No. Eddy-current probes require electrically conductive targets. For non-metallic measurement, consider capacitive or laser displacement alternatives.
- Q: What conditioner unit is recommended?
- A: Use LEM-specified driver/conditioner matched to the LF 1005 series. Contact Konmask for bundled probe + conditioner sourcing.
- Q: Is expedited shipping available?
- A: Yes. DHL Express and FedEx Priority options are available. Typical transit: 3–5 days to most destinations.
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