Bently Nevada 3500/42-01-00 (176449-02+128229-01)

The Bently Nevada 3500/42-01-00 Proximitor Seismic Monitor is a vibration monitoring and protection device designed for use with Bently Nevada’s 3500 series machinery protection systems. It accepts signals from various types of transducers (e.g., proximity, velocity, and acceleration sensors) and provides real-time monitoring of machine health, particularly for critical rotating machinery. This device can monitor multiple vibration parameters, and it supports a variety of transducer types, ensuring broad applicability across different industrial environments.

Key Specifications for the 3500/42 Proximitor Seismic Monitor:

Inputs:

Transducer Compatibility: The 3500/42 can accept up to 4 signals from various types of transducers:
- Proximity
- Velocity
- Acceleration
Power Consumption:
- 7.7 watts (typical).
Input Impedance:
- Standard I/O: 10 kΩ (for Proximitor and acceleration inputs).

Sensitivity (for different parameters):

Radial Vibration:
- 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
Thrust:
- 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
Eccentricity:
- 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
Differential Expansion:
- 0.394 mV/μm (10 mV/mil) or 0.787 mV/μm (20 mV/mil).
REBAM (Radial Vibration):
- 40 mV/μm (1000 mV/mil) or 80 mV/μm (2000 mV/mil).
Acceleration:
- 10 mV/(m/s²) (100 mV/g).
Velocity:
- 20 mV/(mm/s) pk (500 mV/(in/s)) pk or 5.8 mV/(mm/s) pk (145 mV/(in/s)) pk or 4 mV/(mm/s) pk (100 mV/(in/s)) pk.
Shaft Absolute Radial Vibration:
- 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
Shaft Absolute Direct:
- 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
Shaft Absolute Velocity:
- 20 mV/(mm/s) pk (500 mV/(in/s)) pk or 5.8 mV/(mm/s) pk (145 mV/(in/s)) pk or 4 mV/(mm/s) pk (100 mV/(in/s)) pk.

Outputs:

Front Panel LEDs:
- OK LED: Indicates proper operation.
- TX/RX LED: Indicates communication status with other modules.
- Bypass LED: Indicates when the monitor is in Bypass Mode.
Buffered Transducer Outputs:
- Each channel has a coaxial connector for the transducer signal, short-circuit protected.
- Output Impedance: 550 Ω.
- Transducer Power Supply: -24 Vdc.
- Recorder Output: +4 to +20 mA (proportional to monitor full scale, for each channel).
- Compliance (Current Output): 0 to +12 Vdc range across load, with load resistance from 0 to 600 Ω.
- Resolution: 0.3662 µA per bit with a ±0.25% error at room temperature.
- Update Rate: ~100 ms or less.
Shaft Absolute Buffered Outputs:
- These outputs provide one output for each channel group.
- Short-circuit protected.
- Output Impedance: 300 Ω.

Ordering Information:

Part Number: 3500/42-01-00
- I/O Module: 128229-01 (Prox/Seismic I/O Module with internal terminations).
- Transducer Type: Supports Seismoprobe, Proximity/Accelerometer, and Velomitor (though Velomitor is not recommended).

Ordering Options:

A: I/O Module Type
- 01: Proximity/Seismic I/O Module with internal terminations.
B: Agency Approval
- 00: No agency approval.

Spares and Additional Parts:

Spares Part Number: 176449-02
- 3500/42M Proximitor*/Seismic Monitor.

I/O Module Types:

The 3500/42 Proximitor Seismic Monitor supports different I/O module configurations, allowing flexibility in the choice of modules based on application requirements.

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