Description

Product Description

The Bently Nevada 3500/40-03-01 Proximitor Monitor Module is a condition monitoring unit within the 3500 Machinery Protection System, engineered for high-accuracy shaft and vibration measurement using proximity probe technology.

It is designed for paired-channel operation architecture, enabling coordinated measurement processing for machine dynamics such as radial vibration, axial thrust position, shaft eccentricity, differential expansion, and REBAM® analysis. The module integrates directly into the 3500 rack platform for continuous machinery health monitoring in high-criticality rotating equipment.

Measurement Functions

The module processes signals from Bently Nevada proximity transducers and converts them into calibrated mechanical parameters:

• Radial vibration measurement

• Axial thrust position monitoring

• Shaft eccentricity detection

• Differential expansion tracking

• REBAM® (rotor dynamics and alignment analysis)

Channel operation is structured in paired configuration to support synchronized measurement behavior.

Signal Processing & Frequency Response

Advanced filtering architecture ensures stable and accurate measurement under varying operating conditions:

• Radial vibration filtering:

• 4 Hz to 4 kHz (direct mode)

• 1 Hz to 600 Hz (alternate mode)

• Thrust / expansion processing:

• Direct response: 1.2 Hz

• Gap filter: 0.41 Hz

• REBAM spike filtering range: 0.152 Hz to 8,678 Hz (programmable)

• Digital conditioning reduces noise and improves low-frequency resolution

Electrical Characteristics

• Typical Power Consumption: 7 W

• Transducer Excitation Voltage: –24 VDC

• Input Impedance:

• 10 kΩ (standard configuration)

• 50 kΩ (TMR parallel configuration)

• Buffered Output Impedance: 550 Ω

• Output Protection: Short-circuit protected per channel

• Signal Output: Dedicated buffered output per channel

Alarm & Measurement Accuracy

• Adjustable setpoints: 0–100% of full scale

• Measurement accuracy: ±0.13%

• Alert delay range: 1–60 seconds

• Danger delay range: 0.1–60 seconds

• Independent alarm configuration per measurement channel

• Supports both warning and trip-level logic thresholds

System Integration

• Compatible with Bently Nevada 3500 rack architecture

• Direct interface with proximity transducer systems

• Provides real-time buffered signals for external diagnostics

• Supports condition monitoring and protection system integration

• Designed for continuous operation in critical machinery environments

Mechanical Data

• Dimensions: 241.3 × 24.4 × 241.8 mm

• Weight: 0.91 kg

• Rack-mounted modular design within 3500 system chassis

• Hot-swappable architecture (system dependent configuration)

Environmental Ratings

• Operating Temperature: 0°C to +65°C

• Compliance: ATEX, CSA, EN 61010-1, EMC standards

• Designed for electrically noisy and vibration-intensive environments

• Suitable for continuous industrial monitoring applications

Application Areas

• Steam and gas turbine vibration monitoring

• Compressor shaft displacement and thrust control

• Pump radial vibration diagnostics

• Power generation rotating machinery protection

• Oil & gas critical equipment condition monitoring

FAQ

Q1: What makes this model different from multi-channel versions?
This configuration uses paired-channel architecture optimized for specific measurement synchronization requirements.

Q2: Can it measure multiple vibration parameters simultaneously?
Yes, it supports multiple derived parameters including vibration, thrust, eccentricity, and expansion.

Q3: Is it compatible with all 3500 system racks?
Yes, it is designed for standard Bently Nevada 3500 rack integration.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems