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EL3314 - Eddy Current Vibration Displacement Sensor IP67 - Stainless Steel Industrial Rotating Equipment
| MOQ: | 1 |
| Price: | USD 100-10000/Piece |
| Standard Packaging: | 50*50*50mm |
| Delivery Period: | 3-7 |
| Payment Method: | T/T |
| Supply Capacity: | 1/piece in stock |
1. Product Overview
The BECKHOFF EL3314 is a high-precision eddy-current proximity transducer system engineered for critical machinery monitoring in industrial automation. Designed for non-contact measurement of shaft vibration, position, and eccentricity, this system comprises a -8V DC powered probe with an integral armored cable and demodulating transducer. The probe features an Inconel® 718 tip and PEEK housing rated for continuous operation at 200°C (392°F), making it suitable for gas turbines, steam turbines, and high-speed compressors. Its corrosion-resistant construction withstands harsh environments including chemical exposure and high humidity. Compliant with API 670 5th Edition standards, the EL3314 delivers ±1% linearity across standard measurement ranges (0-2mm/80mil) with a resolution of 0.1μm. The system integrates seamlessly with Bently Nevada’s 3500/System 1® monitoring platforms for predictive maintenance.
2. Key Technical Specifications
- Measurement Range: 0.25–2.5mm (10–100 mils)
- Sensitivity: 7.87 mV/µm (200 mV/mil) ±3%
- Frequency Response: 0 to 15 kHz (±1dB)
- Operating Temp: Probe: -40°C to +200°C (-40°F to +392°F)
- Cable Length: Standard 1m/3m/5m/9m options (triaxial shielded)
- Linearity: ≤±1% full scale (ISO 17025 calibrated)
- Electrical:
- Excitation: -18V to -22V DC @ 4-8mA
- Output: -1 to -21V DC (gap voltage)
- Environmental:
- IP67/NEMA 4X (transducer)
- ATEX/IECEx Zone 2/22 (Ex nA IIC T4 Gc)
- Compliance: API 670, ISO 10817, SIL 2 (IEC 61508)
3. Primary Applications
This system is indispensable for predictive maintenance in high-value rotating assets:
- Gas/Steam Turbines: Real-time shaft vibration monitoring for imbalance detection
- Centrifugal Compressors: Thrust position measurement to prevent surge damage
- Hydrogenerators: Air gap monitoring between rotor and stator
- Pump Trains: Bearing wear detection in refinery charge pumps
- Electric Motors: Eccentricity measurement for premium efficiency motors
- Geared Systems: Gear mesh monitoring in marine propulsion
- Paper Machine Rolls: Vibration analysis to prevent web breaks
- Blower Systems: Shaft displacement monitoring in wastewater aeration
Its high-temperature capability enables installation near turbine casings and steam lines where ambient temperatures exceed 150°C, while the triaxial cable provides immunity to EMI from VFDs.
4. Functional Advantages
- Extreme Environment Resilience:
- 200°C continuous operation (50°C above industry standard)
- Chemical-resistant PEEK housing (pH 1-14 compatibility)
- Measurement Precision:
±0.5% thermal stability (-30°C to +150°C)
0.1μm resolution for early fault detection - Reliability Features:
- Hermetically sealed probe tip (10 bar pressure rating)
- Armored cable withstands 50N crushing force
- Maintenance Optimization:
- Quick-disconnect fittings for probe replacement <15 minutes
- Cable integrity diagnostics via capacitance monitoring
- Safety Compliance:
- ATEX/IECEx certified for hazardous areas
- SIL 2 capable for safety instrumented systems
- Integration Flexibility:
- Direct compatibility with 3500/System 1® monitors
- 4-20mA converters available (Model 146800-01)
5. Operational Principle & Diagnostics
The system operates on eddy-current principles:
- Probe Excitation: -20V DC energizes coil, generating electromagnetic field
- Target Interaction: Conductive shaft surfaces induce eddy currents
- Gap Measurement: Field impedance changes linearly with distance
- Signal Demodulation: Transducer converts impedance to DC voltage (-2V = 1mm gap)
Advanced Diagnostics Include:
- Probe Integrity Monitoring:
- Coil resistance (7.5Ω ±0.5Ω)
- Capacitance verification (≤30pF/m)
- Cable Diagnostics:
- Shield continuity testing
- Insulation resistance >100MΩ @ 500V DC
- Transducer Health:
- Output drift monitoring (±0.5% calibration check)
- Over-temperature alert (165°C threshold)
Calibration & Compliance:
- NIST-traceable calibration certificates
- API 670 Annex F compliance for machinery protection
- SIL 2 verification per IEC 61508 (PFDAVG < 0.01)
| Key Parameter | Description |
|---|---|
| Product Type | Proximitor® Driver / Vibration Transmitter Module |
| Model Number | EL3314 |
| Primary Function | Converts raw eddy current probe (e.g., 3300 XL 8mm, 5mm, 11mm) signals into a standardized 4-20 mA vibration (displacement) output. |
| Measured Parameter | Radial Shaft Vibration (Displacement), Peak-to-Peak (µm or mils). |
| Input Signal Source | Bently Nevada Eddy Current Probes (Requires compatible probe & extension cable). |
| Output Signal | 4-20 mA DC (Two-wire, Loop Powered), linearly proportional to vibration amplitude. |
| Output Range (Common) | Configurable; Typical ranges include 0-500 µm pk-pk, 0-1000 µm pk-pk, 0-2000 µm pk-pk (or equivalent mils). |
| Frequency Response | DC to 10 kHz (Typically flat within ±3 dB from 10 Hz to 1 kHz, rolls off above 1 kHz). |
| Gap Voltage (-Vdc) | Supplies -18 Vdc to -24 Vdc to the eddy current probe. |
| Power Supply | 18-30 Vdc (Nominal 24 Vdc), Loop Powered via the output terminals. |
| Operating Temp. Range | -40°C to +85°C (-40°F to +185°F). |
| Housing | Designed for mounting in Bently Nevada 3300/3500 Series Racks (e.g., 3300/20). |
| Approvals/Certifications | Typically carries FM, CSA, ATEX, IECEx (Specific markings depend on variant & order code). |
| Key Features | • Loop Powered (2-Wire) • Reverse Polarity Protection • Fault Indication via output saturation (≤ 3.6 mA or ≥ 21 mA) • Configurable Scale Factor • Compatible with 3300 monitoring system. |
| Physical Protection | Designed for rack mounting; protection depends on rack enclosure (typically IP65/NEMA 4X or higher with proper rack). |
| Typical Application | Continuous monitoring of radial vibration on rotating machinery (turbines, compressors, pumps, motors, fans) where a long-distance 4-20mA signal is required. |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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