3500/40M Proximitor Monitor

The 3500/40M Proximitor Monitor is a four-channel device that interfaces with Bently Nevada proximity transducers. It conditions signals for vibration and position measurements and compares them with user-configurable alarms. Through 3500 Rack Configuration Software, each channel can be programmed to perform various functions such as:

Radial vibration
Eccentricity
REBAM
Thrust position
Differential expansion

The primary function of the 3500/40M Proximitor Monitor is to provide continuous machinery protection by comparing monitored parameters against user-defined alarm setpoints. This allows for early detection of issues and ensures safe machine operation. Additionally, it offers valuable machine information for both operational and maintenance personnel.

Key Features

Machinery Protection: Continuously compares monitored parameters to alarm setpoints.
Versatile Measurements: Can measure radial vibration, eccentricity, thrust position, differential expansion, and REBAM.
Configurable Setpoints: Alerts and danger setpoints can be configured for each active static value.
Signal Conditioning: Conditions input signals to generate relevant machine parameters for monitoring.

Specifications

Inputs

Signal Inputs: Accepts from 1 to 4 proximity transducer signals.
Input Impedance: 10 kΩ (Standard I/O for proximitor and acceleration inputs).

Sensitivity

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: 40 mV/μm (1000 mV/mil) or 80 mV/μm (2000 mV/mil).

Outputs

Front Panel LEDs:
- OK LED: Indicates proper operation.
- TX/RX LED: Indicates communication with other 3500 rack modules.
- Bypass LED: Indicates Bypass Mode.
Buffered Transducer Outputs:
- Each monitor has a coaxial connector for each channel.
- Short-circuit protected.
- Output Impedance: 550 Ω.
Transducer Power Supply: -24 Vdc.

Signal Conditioning

Frequency Response (Radial Vibration):
- Direct filter: User-programmable single-pole from 4 Hz to 4000 Hz or 1 Hz to 600 Hz.
- Gap filter: -3 dB at 0.09 Hz.
- 1X Filter: Not used.
- Constant Q Notch Filter: Minimum rejection in the stopband of -34.9 dB.
- 1X and 2X Vector Filter: Constant Q Filter with a stopband rejection of -57.7 dB.