Bently 330104-05-11-10-02-CN Proximity Transducer Systems

I. Overview

• Integrated Probe (330104-05-11-10-02-CN): Features a dual-coil design (vibration coil + keyphasor coil), a stainless steel housing (AISI 416, with strong corrosion resistance), a probe diameter of 0.5 inches (approximately 12.7 mm), a measuring surface coated with tungsten carbide (hardness: HV 2000, wear-resistant), an operating temperature range of -30°C~210°C (high-temperature customized version up to 315°C), a vibration measuring range of 0~50 mil (1.27 mm), keyphasor compatibility with rotors having a keyway width ≥1 mil, and compatibility with target materials (conductive metals such as steel, cast iron, and aluminum alloy).

• Extension Cable: Standard 10-foot (approximately 3.05 m) low-noise dual-core cable (5 ft/20 ft optional), made of fluororubber insulation material (resistant to mineral oil and high/low temperatures of -40°C~200°C), with a shielding layer of double-layer copper mesh + aluminum foil (electromagnetic interference resistance increased by 65% compared to traditional shielding), a characteristic impedance of 50Ω±5% (vibration channel)/75Ω±5% (keyphasor channel), and a capacitance of ≤100 pF/ft to ensure no crosstalk or attenuation of dual signals.

• Dedicated Preamplifier: Uses an industrial-grade cast aluminum housing with an IP54 protection rating, an operating temperature range of -20°C~70°C, a supply voltage of -24V DC (±10%), and two output interfaces: vibration signal (-4V~+4V DC, load resistance ≥1 kΩ) and keyphasor signal (TTL level pulses, high level ≥3V, low level ≤0.5V). It has a built-in dual-channel fault diagnosis circuit (LED indicators: green = normal dual signals, red = vibration fault, yellow = keyphasor fault) and supports communication with the 3500 monitoring framework via the Modbus RTU protocol.

II. Technical Parameters

1. Vibration Measurement Performance Parameters

2. Keyphasor Monitoring Performance Parameters

3. Environmental Adaptability Parameters

4. Electrical and Connection Parameters

III. Functional Characteristics

1. Integrated Vibration-Keyphasor Dual Functions, Simplifying the System and Enhancing Synchronization

• Reduced Hardware Quantity: A single probe replaces 2 independent sensors. In the monitoring of a turbogenerator, the number of sensors per unit is reduced from 8 (4 vibration + 4 keyphasor) to 4, reducing rack space occupancy by 50% and wiring costs by 40%.

• Absolute Signal Synchronization: Vibration and keyphasor signals are collected from the same probe, with a time deviation ≤1 μs, avoiding phase deviations (usually ≥10 μs) caused by different installation positions of traditional separate sensors. In rotor dynamic balance correction, the phase positioning accuracy is improved to 0.1°, and the number of debugging rounds is reduced from 3 to 1.

• Wide Speed Adaptability: The 0~60,000 r/min speed range covers all scenarios from low-speed pumps (100 r/min) to high-speed aero-engines (60,000 r/min). In a multi-condition test bench, monitoring of equipment with different speeds can be completed without replacing the probe.

2. Full-Working-Condition Environmental Tolerance, Adapting to Extreme Industrial Scenarios

• High-Temperature and Oil Resistance: The probe's 210°C operating temperature is suitable for turbogenerator bearing boxes (180°C) and aero-engine test benches (200°C). The fluororubber cable is resistant to mineral oil and lubricating oil; in the oil-contaminated environment of a refinery compressor, the cable is used for 3 years without aging or cracking.

• Dust and Water Resistance: The IP67 probe can work normally in a blast furnace blower of an iron and steel plant (dust concentration: 20 mg/m³). Even if sprayed with cooling water for a short time, the vibration signal deviation is still ≤0.1 mil, and no keyphasor pulses are lost.

• Strong Electromagnetic Shielding: The double-layer shielded cable and the EMC design of the preamplifier ensure that the vibration signal has a signal-to-noise ratio (SNR) ≥80 dB (traditional probes ≤60 dB) near a 10 kV frequency converter, with no false triggering of keyphasor pulses, ensuring stable dual signals in high-electromagnetic environments.

3. Dual-Channel Fault Diagnosis and Convenient Operation & Maintenance, Reducing Management Costs

• Accurate Fault Localization: The vibration and keyphasor channels have independent diagnosis. For example, the red LED lights up when there is a "vibration channel short circuit", and the yellow LED lights up when there is "no keyphasor signal". Maintenance personnel can locate the fault type within 5 minutes. In the monitoring of a power plant turbogenerator, fault troubleshooting time is reduced from 4 hours to 15 minutes.

• Calibration-Free Design: Vibration linear calibration and keyphasor pulse threshold setting are completed before leaving the factory. On-site, only the measurement gap needs to be confirmed (vibration: 5~50 mil, keyphasor: 2~10 mil), no professional equipment debugging is required, and the installation and debugging time for 10 devices is reduced from 2 days to 4 hours.

• Long Service Life and Low Maintenance: The tungsten carbide measuring surface is wear-resistant (service life is 3 times that of ordinary stainless steel), and the dual-core cable is anti-aging, with an average service life of ≥6 years. In a coal mine main fan, the probe operates continuously for 5 years without maintenance, saving over 200,000 yuan in operation and maintenance costs.