Bently 330730-040-00-00

Description

3. Technical Specifications

Cable Core Parameters

• Cable Type: Shielded, twisted-pair extension cable, optimized for eddy-current proximity probe signal transmission (0–12 V DC, low-noise).
• Length: 40 feet (12.19 meters), fixed-length design to ensure consistent signal performance (no signal degradation from custom cutting/splicing).
• Conductor Configuration: 4-conductor, stranded tinned copper (24 AWG per conductor) with twisted-pair geometry (pairing for power, pairing for signal) to minimize crosstalk and EMI.
• Conductor Resistance: ≤18 Ω per 100 feet (30.48 meters) at 25°C, ensuring minimal voltage drop across the 40-foot length—critical for maintaining probe power and signal integrity.
• Insulation Material: Cross-linked polyethylene (XLPE) with a dielectric strength of ≥1500 V AC (1 minute), providing robust electrical insulation and resistance to thermal aging.
• Shielding: Dual-layer shielding—100% tinned copper braid (90% coverage) + aluminum foil (100% coverage)—to reject EMI/RFI (attenuation ≥60 dB at 100 MHz).
• Jacket Material: Oil-resistant, flame-retardant polyurethane (PU) with a Shore hardness of 80±5 A, offering abrasion resistance, flexibility, and chemical resilience.

Connector Specifications

• Connector Type: Bently proprietary bayonet connectors (male on both ends), designed for 3300 Series proximity probes and signal conditioners.
• Contact Material: Gold-plated brass (0.1 μm plating thickness), ensuring low contact resistance (≤10 mΩ) and resistance to oxidation/corrosion.
• Connector Rating: IP67 when mated (per IEC 60529), protecting against dust ingress and temporary water submersion (up to 1 meter for 30 minutes).
• Latching Mechanism: Bayonet “twist-lock” design (1/4-turn engagement) for secure, vibration-resistant mating—prevents accidental disconnection in high-vibration environments (e.g., crusher stations).

Environmental & Mechanical Ratings

• Operating Temperature Range: -40°C to +105°C (cable jacket and conductors); -30°C to +85°C (connectors)—suitable for industrial environments ranging from arctic mining sites to refinery process units.
• Vibration Resistance: Compliant with IEC 60068-2-6 (10 g acceleration, 10–2000 Hz) for the cable and connectors, ensuring no signal disruption from machinery vibration.
• Shock Resistance: Compliant with IEC 60068-2-27 (50 g shock, 11 ms duration), withstanding transient impacts during installation or maintenance.
• Chemical Resistance: Jacket and insulation resist industrial oils (mineral oil, hydraulic oil), greases, solvents (ethanol, methanol), and saltwater—ideal for offshore platforms and chemical plants.
• Flame Retardancy: Compliant with UL 94 V-0 (vertical flame test), self-extinguishing within 10 seconds to reduce fire risk in industrial facilities.

Electrical Performance

• Signal Attenuation: ≤0.5 dB at 10 kHz (across 40 feet), ensuring minimal degradation of high-frequency eddy-current signals (critical for detecting bearing wear harmonics).
• Capacitance: ≤100 pF per foot (between conductors), preventing signal distortion from capacitance buildup—critical for low-voltage probe signals.
• Inductance: ≤0.5 μH per foot (per conductor), minimizing inductive interference from nearby power cables.

4. Functional Features

• Signal Integrity for Eddy-Current Probes: The shielded, twisted-pair design and low conductor resistance ensure minimal signal attenuation (≤0.5 dB at 10 kHz) and EMI/RFI rejection (≥60 dB at 100 MHz). This preserves the integrity of low-voltage, high-sensitivity eddy-current signals—ensuring accurate measurements of shaft vibration (down to 0.1 μm) and displacement (down to 0.001 mm) even across the 40-foot length.
• Plug-and-Play 3300 Series Compatibility: Pre-terminated with Bently’s proprietary bayonet connectors, the cable requires no on-site termination or calibration. The “twist-lock” latching mechanism ensures secure, error-free mating with 3300 Series probes and signal conditioners—reducing installation time by 70% compared to generic cables (which require custom crimping/testing).
• 40-Foot Length for Medium-to-Large Setups: The 40-foot (12.19-meter) length is optimized for industrial environments where probes and conditioners are separated by significant distances—such as turbine halls (probes on turbine casings, conditioners in control rooms 30+ feet away) or refinery compressor skids (probes on compressors, conditioners in remote cabinets). This eliminates the need for daisy-chaining shorter cables (which increases signal loss and failure points).
• Rugged Design for Industrial Durability: The oil-resistant PU jacket (Shore 80 A) resists abrasion, chemicals, and temperature extremes (-40°C to +105°C), ensuring a service life of 8+ years in harsh environments. Dual-layer shielding (copper braid + aluminum foil) protects against EMI/RFI from nearby motors, VFDs, and power cables—critical for refineries and manufacturing plants with dense electrical infrastructure.
• IP67 Mated Connectors for Environmental Protection: When mated with 3300 Series components, the connectors achieve IP67 rating—protecting against dust ingress and temporary water submersion. This ensures reliable performance in dusty mining sites, humid offshore platforms, or washdown environments (e.g., food processing auxiliary machinery).
• Flame-Retardant Construction for Safety: UL 94 V-0 flame retardancy reduces fire risk in industrial facilities—critical for oil & gas, chemical, and power generation sites where flammable materials are present. The self-extinguishing jacket prevents fire spread, aligning with global industrial safety standards (e.g., NFPA 70 for electrical safety).
• Low Capacitance/Inductance for Signal Quality: Capacitance (≤100 pF/foot) and inductance (≤0.5 μH/foot) are minimized to prevent signal distortion. This is especially important for high-frequency eddy-current signals (e.g., 10 kHz bearing harmonics), where capacitance buildup can skew vibration measurements and lead to false alarms.

5. Application Scenarios

• Power Generation Industry (Turbine Halls):
  • Used in coal-fired, natural gas, and nuclear power plants to connect 3300 Series proximity probes (mounted on steam/gas turbine casings) to signal conditioners (housed in control rooms 30–40 feet away). The cable’s 40-foot length eliminates the need for custom cable runs, while EMI shielding rejects interference from turbine generators and power transformers. IP67 connectors resist steam and oil contamination in turbine halls, ensuring reliable signal transmission for vibration/displacement monitoring—critical for preventing rotor rub and unplanned power outages.
• Oil & Gas Industry (Refinery Compressor Skids):
  • Deployed in onshore refineries and offshore platforms to connect probes on centrifugal compressors (mounted on skids) to conditioners in remote control cabinets (40 feet away). The oil-resistant PU jacket withstands exposure to refinery oils and solvents, while dual-layer shielding rejects EMI from nearby pump motors and VFDs. ATEX-compatible materials (when paired with Zone 1 probes) support use in explosive refinery environments, ensuring compliance with safety standards.
• Mining Industry (Crusher Stations):
  • Applied in iron ore, coal, and copper mines to connect probes on jaw crushers/cone crushers (mounted on crusher frames) to conditioners in control rooms (30–40 feet away). The abrasion-resistant jacket withstands damage from mining debris, while vibration resistance (10 g acceleration) ensures no signal disruption from crusher operation. IP67 connectors prevent dust ingress—critical for maintaining signal integrity in dusty mining environments, where dust buildup can degrade generic cable connections.
• Petrochemical Industry (Reactor Complexes):
  • Used in ethylene crackers and polymer reactor facilities to connect probes on agitator shafts (mounted on reactor vessels) to conditioners in control cabinets (40 feet away). The chemical-resistant jacket resists exposure to ethylene, propylene, and solvents, while the wide temperature range (-40°C to +105°C) supports operation in both cold storage areas and high-heat reactor jackets. Low signal attenuation ensures accurate measurement of agitator vibration—critical for preventing bearing failure and costly reactor shutdowns.
• Marine Industry (Ship Engine Rooms):
  • Installed on LNG tankers and cargo ships to connect probes on marine diesel engines (mounted on engine blocks) to conditioners in the ship’s control room (40 feet away). The saltwater-resistant jacket and connectors withstand marine environments, while flame retardancy (UL 94 V-0) complies with shipboard fire safety standards. The cable’s flexibility simplifies routing through tight engine room spaces, ensuring reliable monitoring of engine crankshaft vibration—critical for preventing engine failure at sea.
• Steel Industry (Rolling Mill Facilities):
  • Deployed in steel mills to connect probes on hot rolling mill drives (mounted on mill frames) to conditioners in control rooms (30–40 feet away). The high-temperature tolerance (+105°C) resists heat from hot rolling operations, while the EMI shielding rejects interference from mill motors and power cables. Abrasion resistance prevents damage from steel scrap and debris, ensuring long-term reliability in harsh mill environments—critical for maintaining rolling mill productivity and steel sheet quality.