991-25-70-01-01 Bently Nevada

991-25-70-01-01 Bently Nevada Coupler for external

Brand：BENTLY NEVADA Model number：991-25-70-01-01

Country of origin: U.S. Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

Bently Nevada's proximity transducer systems, such as the 3300 XL series, are designed to measure vibration, axial position, and other parameters on rotating machinery. The system consists of a probe, an extension cable, and a Proximitor® Sensor. The "coupler for external" specifically refers to the extension cable and its associated connectors that facilitate the remote placement of the Proximitor® Sensor away from the harsh operating environment of the probe.

Functionality: The extension cable transmits the raw high-frequency signal from the proximity probe to the Proximitor® Sensor without significant degradation. The connectors ensure a secure, low-noise electrical connection between the probe, the extension cable, and the Proximitor® Sensor. This allows for flexible installation, placing the Proximitor® Sensor in a climate-controlled panel while the probe is mounted directly on the machinery.
Design: These cables are coaxial, typically featuring durable, corrosion-resistant, gold-plated brass ClickLoc™ connectors. The ClickLoc™ design is patented to provide a secure, finger-tight connection that prevents loosening due to vibration, without requiring special tools. The cable itself is often made with robust materials like FEP (fluoroethylene propylene) insulation to withstand demanding industrial environments.

Product Parameters

Parameters vary depending on the specific proximity transducer system (e.g., 3300 XL 8mm, 11mm, 25mm, or 50mm systems), but key specifications for the extension cable and connectors include:

Cable Lengths: Available in various standard lengths (e.g., 1 meter, 5 meters, 9 meters, up to 100 meters or more for some systems) to accommodate different machine-to-cabinet distances.
Cable Type: Coaxial, often 75Ω impedance.
Connector Type: Bently Nevada's proprietary ClickLoc™ connectors for secure, reliable connection.
Operating Temperature: Typically a wide range, often from -52°C to +100°C (-62°F to +212°F) or -35°C to +120°C (-31°F to +248°F) for the cable and probe.
Humidity: Designed to operate effectively in high humidity environments (e.g., 93% relative humidity).
Tensile Strength: High pull strength at the probe-to-cable junction (e.g., 330 N / 75 lbf for 8mm probes).
Electrical Properties: Low capacitance per foot/meter to minimize signal loss over long distances.
Environmental Protection: Often enhanced with optional connector protectors for increased environmental sealing.

Product Advantages

Interchangeability: A key advantage of Bently Nevada systems, including their extension cables, is complete interchangeability without the need for individual component matching or bench calibration. This simplifies installation and replacement.
Robustness and Durability: Designed for harsh industrial environments, offering reliable performance even with exposure to oil, water, and vibration. The CableLoc™ and ClickLoc™ designs enhance mechanical integrity.
Signal Integrity: High-quality coaxial cables and connectors ensure accurate, stable signal transmission over extended distances, crucial for precise vibration and position measurements.
Flexibility in Installation: Allows the Proximitor® Sensor to be mounted in a more protected and accessible location (e.g., a control cabinet), away from high temperatures, vibration, or hazardous areas, while the probe remains at the measurement point.
Ease of Installation: ClickLoc™ connectors require only finger-tight torque, simplifying installation and removal without special tools.
Reduced Noise: Proper cable shielding and robust connectors help minimize electrical noise interference, ensuring clean signal acquisition.

Important Considerations

System Compatibility: Always ensure the extension cable and its connectors are compatible with the specific Bently Nevada proximity probe and Proximitor® Sensor being used (e.g., 3300 XL series components are designed to work together).
Cable Length: Select the appropriate cable length to minimize signal degradation, especially for very long runs. Refer to Bently Nevada's system documentation for maximum recommended lengths.
Environmental Ratings: Verify that the cable's and connectors' environmental specifications (temperature, humidity, hazardous area ratings) match the installation environment.
Proper Installation: Follow Bently Nevada's detailed installation guides, paying close attention to bending radii, routing to avoid damage, and ensuring connectors are properly tightened ("clicked") to maintain environmental integrity and signal quality.
Connector Protectors: In environments with high moisture or corrosive elements, using optional connector protectors is recommended to enhance long-term reliability.
Handling: While robust, avoid excessive pulling or bending of the cables, particularly near the connectors, to prevent internal damage.

Product Applications

Bently Nevada's external couplers (extension cables and connectors) are integral to almost all applications of their proximity transducer systems for machinery protection and condition monitoring:

Turbines (Steam, Gas, Hydro): Measuring rotor vibration, axial thrust position, differential expansion, and shaft eccentricity.
Compressors: Monitoring shaft vibration and position on centrifugal and reciprocating compressors.
Pumps: Assessing vibration and shaft movement on large industrial pumps.
Generators: Monitoring shaft vibration and bearing health.
Gearboxes: Used with proximity probes to monitor shaft movement and clearances.
Motors: Vibration and position monitoring for large electric motors.
Critical Machinery in Industries: Such as oil and gas, power generation, petrochemicals, pulp and paper, and manufacturing, where continuous monitoring of rotating assets is vital for safety, reliability, and preventing costly downtime.

P3403893-0351 Bently Nevada

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