BENTLY 106M1081-01

Description

1. Product Overview

2. Product Parameters

2.1 Core Functional Specifications

• Probe Compatibility: Bently 3300 XL 8 mm, 11 mm, and 25 mm proximity probes
• Measurement Range: 0–2 mm (8 mm probes), 0–5 mm (11 mm probes), 0–12 mm (25 mm probes)
• Output Signal: 4–20 mA DC (proportional to shaft displacement) + 0–10 V DC (auxiliary output)
• Measurement Accuracy: ±0.1% of full scale (at 25°C)
• Response Time: ≤10 ms (signal processing latency)
• Excitation Voltage: -24 VDC (for proximity probe power)

2.2 Electrical Parameters

• Power Supply: 24 VDC ±10% (redundant input supported)
• Power Consumption: ≤8 W per channel
• Isolation: 2500 VAC between input (probe) and output (system) circuits; 1500 VAC between channels
• Noise Rejection: ≥60 dB (50/60 Hz line noise)

2.3 Environmental & Mechanical Parameters

• Operating Temperature: -40°C to +85°C
• Storage Temperature: -55°C to +100°C
• Relative Humidity: 5%–95% (non-condensing, MIL-STD-810G compliant)
• Protection Rating: IP20 (rack-mounted); IP65 optional with protective housing
• Mounting: Bently 3500 series chassis (1-slot width, 3U height)
• Dimensions: 165 mm × 120 mm × 45 mm (L×W×H)
• Weight: ~0.6 kg

2.4 Certification & Compatibility

• Certifications: ATEX II 2G Ex ib IIC T4, IECEx, UL 508, SIL 2 (IEC 61508)
• Compatible Systems: Bently 3500/40M, 3500/60M monitoring racks; third-party DCS/SCADA via Modbus TCP/IP
• Software Compatibility: Bently System 1® machinery health software for data analysis and trending

3. Advantages & Features

1. Precision Signal Conditioning: BENTLY 106M1081-01 uses advanced signal filtering and linearization algorithms to deliver ±0.1% full-scale accuracy, ensuring reliable shaft displacement measurements even in high-noise industrial environments.
2. Probe Health Diagnostics: Integrated self-test functionality monitors probe cable continuity, short circuits, and probe degradation, BENTLY 106M1081-01 alerts operators to probe faults before they impact measurement integrity.
3. Robust Isolation & Noise Rejection: 2500 VAC input-output isolation and 60 dB line noise rejection make BENTLY 106M1081-01 immune to electromagnetic interference (EMI) from motors, variable frequency drives (VFDs), and other industrial equipment.
4. Wide Environmental Tolerance: Rated for -40°C to +85°C operation and compliant with MIL-STD-810G for shock and vibration, BENTLY 106M1081-01 performs reliably in extreme conditions (e.g., offshore platforms, arctic power plants).
5. Seamless System Integration: Supports direct integration with Bently 3500 monitoring racks and third-party DCS/SCADA systems via 4–20 mA or Modbus TCP/IP, BENTLY 106M1081-01 simplifies data sharing across plant-wide machinery health platforms.

4. Application Fields & Cases

4.1 Application Fields

• Power Generation: Gas/steam turbine shaft displacement monitoring, generator rotor position measurement, boiler feed pump thrust bearing monitoring
• Oil & Gas: Centrifugal compressor shaft alignment, pipeline pump shaft runout detection, LNG liquefaction plant cryogenic pump monitoring
• Petrochemical: Refinery reactor agitator shaft position control, extruder screw alignment, cooling tower fan shaft vibration analysis
• Manufacturing: Steel mill rolling mill roll eccentricity measurement, paper mill dryer cylinder shaft displacement monitoring

4.2 Typical Cases

1. Combined-Cycle Power Plant Turbine Monitoring: A 600 MW gas turbine plant deployed BENTLY 106M1081-01 modules to monitor rotor shaft displacement. The module detected a 0.3 mm increase in shaft runout due to bearing wear, triggering a maintenance alert that allowed technicians to replace bearings during a scheduled outage, avoiding a $1.2 million unplanned shutdown.
2. Offshore Compressor Shaft Protection: An offshore natural gas platform used BENTLY 106M1081-01 to monitor centrifugal compressor shaft position. The module identified abnormal thrust bearing movement caused by gas pressure fluctuations, enabling operators to adjust process parameters and prevent bearing seizure, ensuring continuous gas production.
3. Refinery Reactor Agitator Monitoring: A petrochemical refinery integrated BENTLY 106M1081-01 into its reactor agitator system. The module’s probe diagnostics detected a damaged cable in one proximity probe, allowing for replacement before signal loss occurred—critical for maintaining safe reactor pressure and temperature control.

5. Competitor Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. Probe Matching: BENTLY 106M1081-01 is optimized for Bently 3300 XL proximity probes; for non-Bently probes, select Bently 106M1082-01 with configurable excitation voltage.
2. Environment Adaptation: Choose ATEX/IECEx-certified versions for explosive zones (e.g., refineries, chemical plants); opt for IP65 housing for outdoor or dusty installations (e.g., cement plants).
3. Integration Needs: Select modules with Modbus TCP/IP for cloud-based machinery health platforms (e.g., Bently Asset Condition Monitoring); choose 4–20 mA-only versions for legacy DCS integration.

6.2 Precautions

1. Wiring Guidelines: Use shielded, twisted-pair cables (Bently P/N 3300 XL extension cables) for probe connections; ground shielding at the module end only to eliminate ground loops. Tighten terminal screws to 1.5 N·m to prevent signal degradation.
2. Calibration Requirements: Calibrate BENTLY 106M1081-01 annually using Bently-certified calibration tools (e.g., Calibrator 9010); verify linearity across the full measurement range to maintain accuracy.
3. Maintenance Checks: Inspect probe-to-module connections every 6 months for corrosion or damage; replace aging probe cables (≥5 years old) to prevent signal loss. Update module firmware via Bently System 1® software to enable new diagnostic features.
4. Installation Best Practices: Mount the module in a Bently 3500 chassis with at least 5 cm of clearance from heat-generating components (e.g., power supplies); avoid installation near VFDs or high-voltage equipment to minimize EMI.

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