Description
Bently Nevada 330130-075-00-CN is a high-precision eddy current proximity probe manufactured by Bently Nevada (a Baker Hughes company), designed specifically for monitoring the position, vibration, and speed of rotating machinery shafts (e.g., turbines, generators, compressors) in industrial sectors like power generation, oil & gas, and chemical processing. It is a core component of predictive maintenance and safety protection systems, enabling early detection of mechanical faults such as shaft misalignment, bearing wear, and rotor imbalance.
Product Description
Bently Nevada 330130-075-00-CN belongs to Bently Nevada’s 3300 Series of proximity probes, a product line renowned for reliability in harsh industrial environments. This probe operates on the eddy current principle: it emits a high-frequency electromagnetic field, and changes in the distance between the probe tip and the rotating shaft (target) alter the field’s impedance—this variation is converted into a linear 4–20 mA output signal by a matching signal conditioner (e.g., Bently Nevada 3300 XL Monitor). This linearity ensures Bently Nevada 330130-075-00-CN can accurately measure shaft displacement ranges from 0 to 7.5 mm (0.3 inches), making it ideal for monitoring axial thrust in steam turbines or radial vibration in centrifugal compressors.
A key feature of Bently Nevada 330130-075-00-CN is its robust construction tailored to extreme conditions. The probe body is made of corrosion-resistant stainless steel (316L), and its hermetically sealed design (IP68 rating) protects it from moisture, dust, and chemical ingress—critical for use in offshore oil platforms or gas processing plants. Additionally, Bently Nevada 330130-075-00-CN has a wide operating temperature range (-40°C to +121°C), allowing it to perform reliably near high-heat equipment like turbine casings.
In practical applications, Bently Nevada 330130-075-00-CN is typically paired with Bently Nevada’s 3300 XL signal conditioner and 3500 Monitoring System to form a complete monitoring loop. For example, in a coal-fired power plant, Bently Nevada 330130-075-00-CN is installed near the turbine rotor to monitor radial vibration: if vibration exceeds the threshold (e.g., 50 μm peak-to-peak), the system triggers an alarm and, if necessary, shuts down the turbine to prevent catastrophic failure.
Another advantage of Bently Nevada 330130-075-00-CN is its compatibility with standard industry practices. It supports a standard probe length of 50 mm (2 inches) and a 10 mm (0.39-inch) diameter tip, ensuring easy replacement with existing Bently Nevada probes in retrofitting projects. The “CN” suffix in the model indicates it is configured for the Chinese market, with compliance to local certifications (e.g., CCC) and compatibility with regional power supply standards.
Bently Nevada 330130-075-00-CN also undergoes rigorous quality testing, including vibration resistance (10–2000 Hz) and shock resistance (500 g for 1 ms), ensuring it can withstand mechanical impacts during equipment startup or maintenance. It is certified to ATEX and IECEx standards for use in hazardous areas (Zone 1/2 for explosive gases), eliminating the need for additional explosion-proof enclosures.
Technical Specifications
| Category | Details |
|---|---|
| Measurement Principle | Eddy current (proximity detection) |
| Measurement Range | 0–7.5 mm (0–0.3 inches) linear displacement |
| Output Signal | Requires pairing with a signal conditioner (e.g., 3300 XL) for 4–20 mA |
| Probe Construction | 316L stainless steel body, hermetically sealed (IP68) |
| Operating Temperature | -40°C to +121°C (-40°F to +250°F) |
| Target Material | Ferromagnetic metals (e.g., carbon steel, alloy steel) |
| Probe Length | 50 mm (2 inches) standard (custom lengths available) |
| Probe Diameter | 10 mm (0.39 inches) |
| Certifications | ATEX, IECEx, IP68, CCC (China Compulsory Certification) |
| Cable Type | Shielded twisted-pair cable (5 m standard; extended lengths optional) |
Advantages and Features
- High Measurement Precision: Bently Nevada 330130-075-00-CN offers a linearity error of ≤±1% full scale (FS), ensuring accurate detection of 微小 shaft movements (as small as 0.1 μm), critical for early fault diagnosis.
- Harsh Environment Durability: Its IP68 rating, corrosion-resistant steel body, and wide temperature range make it suitable for extreme conditions (e.g., offshore oil rigs, high-temperature turbines).
- Hazardous Area Compliance: ATEX and IECEx certifications allow direct use in explosive environments, reducing installation costs for additional safety equipment.
- Seamless System Integration: Designed to work with Bently Nevada’s 3300 XL monitors and 3500 systems, ensuring compatibility with existing predictive maintenance workflows.
- Market-Adapted Design: The “CN” configuration includes CCC certification and regional compatibility, simplifying compliance for projects in China.
Application Cases by Industry
- Power Generation (Steam Turbines): In a 600 MW coal-fired power plant, Bently Nevada 330130-075-00-CN probes are installed at the turbine’s high-pressure rotor to monitor axial displacement. If the shaft’s thrust exceeds 5 mm (indicating bearing wear), the 3500 Monitoring System triggers a warning, allowing maintenance teams to replace bearings before a catastrophic seizure.
- Oil & Gas (Centrifugal Compressors): On an offshore oil platform, Bently Nevada 330130-075-00-CN monitors radial vibration of a gas compressor shaft. A sudden increase in vibration (from 20 μm to 80 μm peak-to-peak) detected by the probe signals rotor imbalance, prompting operators to balance the rotor during a scheduled shutdown—avoiding unplanned downtime costing $100k+/hour.
- Chemical Processing (Pumps): In a chemical plant, Bently Nevada 330130-075-00-CN tracks the shaft position of a centrifugal pump. A gradual shift in the probe’s output (from 10 mA to 15 mA) indicates seal degradation, enabling proactive replacement of the mechanical seal and preventing chemical leaks.
Comparison with Competitors
| Feature | Bently Nevada 330130-075-00-CN | Competitor 1 (Siemens 7ML5033-1AA10) | Competitor 2 (Schneider XPSMCM) |
|---|---|---|---|
| Measurement Range | 0–7.5 mm | 0–5 mm | 0–10 mm |
| Operating Temp Range | -40°C to +121°C | -20°C to +80°C | -30°C to +100°C |
| Environmental Rating | IP68 | IP65 | IP67 |
| Hazardous Certifications | ATEX, IECEx | IECEx only | ATEX only |
| Compatibility | Bently Nevada 3300/3500 Systems | Siemens SIMATIC Systems | Schneider Modicon Systems |
Selection Recommendations and Precautions
Selection Recommendations
- Match to Machinery Type: Choose Bently Nevada 330130-075-00-CN for rotating equipment with shaft displacement needs of 0–7.5 mm (e.g., medium-sized turbines, compressors). For larger ranges (＞10 mm), opt for Bently Nevada’s 330130-150-00-CN.
- Consider Environmental Conditions: Prioritize Bently Nevada 330130-075-00-CN for wet, corrosive, or high-heat environments (e.g., offshore rigs) due to its IP68 rating and 316L steel body.
- System Compatibility: If using Bently Nevada’s 3300 XL or 3500 monitors, Bently Nevada 330130-075-00-CN ensures plug-and-play integration, avoiding signal compatibility issues with third-party probes.
Precautions
- Target Material Requirement: The probe only works with ferromagnetic shafts (e.g., carbon steel). For non-ferromagnetic materials (e.g., aluminum), use Bently Nevada’s specialized 330100 Series probes.
- Installation Gap: Maintain a 0.5–1 mm gap between the probe tip and shaft during installation—too small a gap causes signal saturation; too large a gap leads to weak output.
- Cable Handling: Avoid bending the probe cable tightly (minimum bend radius: 25 mm) or routing it near high-voltage cables, as electromagnetic interference can distort the signal.
- Regular Calibration: Calibrate Bently Nevada 330130-075-00-CN annually using Bently Nevada’s calibration kit (e.g., 3300 Calibration Fixture) to maintain measurement accuracy.
330130-075-00-CN
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