Bently 135031-01 Rack Interface I/O Module

I. Overview

• Probe: Features a stainless steel housing (with strong corrosion resistance). Common probe diameters are 5mm/8mm/11mm (to adapt to different measurement gap requirements), and the measurement range is 0.2~2.0mm (adjustable according to the probe model). Non-contact measurement avoids wear to the rotor.

• Extension Cable: Made of oil-resistant and high/low temperature-resistant fluororubber insulation material. The length can be selected as 3m/5m/10m (to adapt to the equipment installation distance). The cable shielding layer adopts a double-layer copper mesh + aluminum foil structure, providing strong anti-electromagnetic interference capability.

• Preamplifier: Uses an industrial-grade reinforced housing and has built-in signal amplification and filtering circuits. It converts the weak eddy current signal collected by the probe into a standard voltage signal (e.g., -4V~+4V, corresponding to 0~2mm displacement) and supports seamless connection with the Bently 3500 monitoring system and GE Mark VIe control system. Meanwhile, the preamplifier is equipped with functions of "probe open/short circuit diagnosis and cable impedance matching" to ensure the reliability of signal transmission.

II. Technical Parameters

1. Measurement Performance Parameters

2. Environmental Adaptability Parameters

3. Electrical and Connection Parameters

III. Functional Characteristics

1. Non-Contact High-Precision Measurement, No Wear and Long Service Life

2. Wide Temperature Range and Strong Anti-Interference, Adapting to Harsh Working Conditions

• High-Temperature Resistance: The probe uses high-temperature-resistant ceramic insulation material and a stainless steel housing, enabling long-term operation in the bearing box of a gas turbine at 200℃. The high-temperature model (customized) can even withstand the turbine-end environment at 350℃.

• Oil and Dust Resistance: The probe has an IP67 protection rating, and the extension cable is made of fluororubber material with oil resistance. In the residue hydrotreating compressor of an oil refinery, the sensor is immersed in a lubricating oil mist environment for a long time without signal drift.

• Strong Electromagnetic Protection: With a double-layer shielded cable and EMC design of the preamplifier, the signal-to-noise ratio of the vibration signal collected by the sensor is ≥70dB beside the rolling mill motor of an iron and steel plant (with 10kV high-voltage frequency converters nearby), without false fluctuations.

3. Early Fault Warning, Reducing Shutdown Risks

• Trend Analysis and Warning: Based on the historical vibration data collected by the sensor, a trend curve is generated. When the vibration amplitude slowly increases from the "normal range (e.g., ≤0.3mm)" to the "warning range (0.3~0.8mm)", the system triggers an audible and visual alarm. For example, the bearing wear fault of a propylene compressor in a petrochemical plant is warned 8 days in advance through trend analysis.

• Fault Characteristic Identification: Combined with vibration spectrum analysis, the sensor data can assist in identifying fault types, such as "increased 1x frequency vibration → rotor unbalance", "increased 2x frequency vibration → shafting misalignment", and "increased high-frequency vibration → bearing raceway wear". In the steam turbine generator set of a power plant, the "rotor unbalance" fault is accurately located through the data of 135031-01, preventing the fault from expanding.

• Interlock Protection Linkage: When the vibration exceeds the "shutdown threshold (e.g., 1.2mm)", the sensor data triggers the emergency shutdown interlock of the equipment. In an overspeed vibration scenario of a gas turbine, after the 135031-01 captures a vibration of 1.5mm, it links with the shutdown system within 0.5 seconds to avoid rotor overspeed accidents.

4. Flexible Adaptation and Convenient Operation & Maintenance

• Multi-Specification Adaptation: The probe diameter (5mm/8mm/11mm) and extension cable length (3m/5m/10m) can be selected according to the equipment installation space and measurement requirements. For example, small-diameter probes are suitable for installation in narrow bearing boxes, and long cables are suitable for monitoring the motor rotor at a long distance (e.g., 10m).

• Calibration-Free Design: The preamplifier has a built-in "automatic gain calibration" function, requiring no manual calibration after installation. Only the "measurement gap (e.g., 0.8mm)" needs to be confirmed. In the installation of a blast furnace blower in an iron and steel plant, maintenance personnel complete the sensor installation and commissioning within 30 minutes.

• Visual Fault Diagnosis: The preamplifier displays the working status through LED indicators (steady green → normal, flashing red → probe open/short circuit). Maintenance personnel can quickly judge sensor faults without connecting software. During the inspection of a chemical plant, the "extension cable breakage" fault is located within 5 minutes, greatly shortening the troubleshooting time.