Product Overview
The Bently Nevada 3500/42-06-00 is a Proximitor Seismic Monitor designed for continuous vibration and position monitoring in rotating machinery. This Industrial Automation Module accepts from 1 to 4 proximity, velocity, or acceleration transducer signals, making it a versatile solution for turbines, compressors, and other critical assets. Manufactured in the U.S.A., the 3500/42-06-00 features an I/O module with internal barriers, internal terminations, and support for 4 x Velomitor transducers. Choose this module to integrate reliable protection into your 3500 rack system.
Technical Specifications
Key specifications of the Bently Nevada 3500/42-06-00 include:
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Inputs: 1 to 4 proximity, velocity, or acceleration transducer signals
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Power consumption: 7.7 watts typical
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Input impedance: 10 kΩ (Proximitor and acceleration inputs)
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Transducer power supply: -24 Vdc
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Recorder output: +4 to +20 mA
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Output impedance (buffered transducer): 550 Ω
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Shaft absolute output impedance: 300 Ω
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Dimensions: 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)
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Weight: 0.91 kg (2.0 lb)
For detailed sensitivity values, refer to the specifications below.
Signal Conditioning Highlights
- Radial Vibration: Direct filter user-programmable, single-pole -3 dB at 4 Hz to 4000 Hz or 1 Hz to 600 Hz ±1% accuracy
- Gap filter: -3 dB at 0.09 Hz (Radial Vibration)
- Accuracy (Direct/Gap): Within ±0.33% of full-scale typical, ±1% maximum
- Acceleration: High-pass and low-pass filters 4-pole (80 dB per decade, 24 dB per octave)
- Velocity: RMS 10 to 5500 Hz, -3 dB; Peak or peak-to-peak 3 to 5500 Hz, -3 dB
Applications
The 3500/42-06-00 is ideal for industries where machinery protection is paramount. Typical applications include:
- Steam and gas turbines in power generation
- Centrifugal and reciprocating compressors in oil & gas
- Pumps and fans in chemical processing
- Paper mill rollers and other rotating equipment
Its ability to handle radial vibration, thrust, eccentricity, differential expansion, and shaft absolute measurements makes it a comprehensive solution for condition monitoring.
Installation & Setup
When installing the Bently Nevada 3500/42-06-00, ensure proper mounting in the 3500 rack. The module is designed with front-panel coaxial connectors for buffered transducer outputs, each short-circuit protected. Verify that the transducer wiring matches the configured sensitivity (e.g., 3.94 mV/μm or 7.87 mV/μm for radial vibration) to ensure accurate readings. The module's internal barriers and terminations simplify wiring, but always follow the manufacturer's guidelines for hazardous area installations.
Maintenance & Reliability
Routine checks of the 3500/42-06-00 should focus on the front-panel LEDs (OK, TX/RX, Bypass) to confirm proper operation and communication. The module's design includes short-circuit protection on outputs, reducing the risk of damage. Environmental considerations: keep the module within specified operating temperatures to maintain accuracy. With a typical power consumption of only 7.7 W, the module runs cool, contributing to long-term reliability.
Compatibility & Integration
The 3500/42-06-00 integrates seamlessly into Bently Nevada 3500 rack systems, communicating with other modules via the rack's internal bus. The front-panel TX/RX LED indicates active communication. The module supports a variety of transducer types, including proximity probes, accelerometers, and velocity sensors, making it compatible with existing monitoring setups. No external communication protocols are required for basic operation.
Selection Guide & Purchasing Advice
Before purchasing, verify your system's requirements: confirm the number of channels needed (1-4) and the transducer types you plan to connect. Check the hazardous area approval option — this unit has option 00 (None). Ensure your rack has an available slot. For a reliable supply of genuine Bently Nevada parts, consider PLC Source PRO. We provide quality industrial automation spares with fast worldwide shipping.