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3500/42M 140734-02

Proximitor Seismic Monitor

Product Information

Product Describe

3500/42M Proximitor Seismic Monitor

Bently Nevada Machinery Condition Monitoring

Proximitor Seismic Monitor is a four-channel monitor

Proximitor Seismic Monitor

  • Manufacturer:
    Bently Nevada
  • Product Category:
    TSI System
  • Spare Part Number:
    140734-02
  • Estimated shipping dimensions:
    24.13 x 2.44 x 16.31 cm
  • Weight:
    0.46 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
  • Signal:
    Accepts from 1 to 4 proximity, velocity or acceleration transducer signals
  • Power consumption:
    7.7 watts, typical
  • Input Impedance of Standard I/O:
    10 kΩ (Proximitor and acceleration inputs)
  • Output Impedance:
    550 Ω
  • Transducer Power Supply:
    -24 Vdc
  • Recorder:
    +4 to +20 mA
  • Stock:
    50
  • New and original with factory sealed packing

    Brand new and 100% original unit, supplied in factory-sealed packaging, ensuring untouched condition and full manufacturer integrity.
  • New in opened package

    These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged.
  • New surplus

    New surplus item in unused condition, originally manufactured for distribution but not deployed in service.
  • Refurbished

    This product has been repaired by an authorized service center, and worn or aged parts have been replaced with qualified genuine parts. Warranty terms are subject to refurbishment certification and service policies.

More Information

Overview Manuals Principle Core Applications

Features:

  • 3500/42M Proximitor Seismic Monitor
  • Proximitor Seismic Monitor is a four-channel monitor
  • Four-channel monitor that accepts input from proximity and seismic transducers
The Bently Nevada 3500/42M proximity sensor seismic monitor protects machinery by continuously comparing monitored parameters with preset alarm values ​​and transmitting critical machine information to operators and maintenance personnel.

The 3500/42M proximity sensor seismic monitor is a four-channel instrument that receives input signals from both proximity and seismic sensors. It processes these signals, providing vibration and position measurements, and compares the processed signals with user-programmable alarm values.

The 3500/42M 140734-02 Bently Nevada Proximitor Seismic Monitor may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 3500/42M 140734-02 Proximitor Seismic Monitor Module Manuals(Datasheets), Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
These sensors convert mechanical vibrations or shaft movements into electrical signals, which are then transmitted to the monitoring module. This module subsequently performs signal conditioning, filtering, and analog-to-digital conversion to analyze parameters such as amplitude, shaft position, and ground vibration. The processed data is continuously compared to preset alarm and hazard settings; if the measured values ​​exceed these limits, the system will trigger an alarm or take protective measures to prevent equipment damage. Through continuous signal processing and real-time monitoring, this module ensures reliable protection and condition monitoring of critical machinery such as turbines, compressors, and pumps.
The 3500/42M is used to monitor critical parameters of rotating machinery, enabling early detection of fault signs and preventing catastrophic damage:
1. Machinery Protection: Continuously compares vibration and position measurements against user-defined alarm settings to trigger automatic shutdown or issue an alarm.
2. Condition Monitoring: Provides maintenance personnel with critical data for trend analysis, helping them shift from reactive to predictive maintenance.
3. Variable Measurement: Each channel can be programmed in pairs to perform specific functions, such as:
4. Radial Vibration: Monitors shaft movement within bearings.
5. Thrust Position: Tracks axial movement to prevent internal contact within the machine.
6. Eccentricity and Rotational Speed: Measures the bending and rotational characteristics of the shaft.
By purchasing this item, you agree to the Terms & Conditions
Moore Automated is NOT an authorized distributor of Bently Nevada
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FAQ

  • What is the fundamental monitoring function of the 3500/42M 140734-02 within the Bently Nevada machinery protection system?
    The 3500/42M 140734-02 is a four-channel Proximitor/Seismic Monitor designed to continuously acquire and condition signals from proximity, velocity, or acceleration transducers for protective vibration, shaft position, and seismic diagnostics within rotating machinery systems.
  • How does the 140734-02 module accommodate multiple transducer types and what input range does it support?
    140734-02 accepts 1–4 input signals from proximity probes, velocity transducers, or accelerometers, with standard input impedance of 10 kΩ for each channel (and an effective 50 kΩ impedance when using TMR I/O bussed in parallel), facilitating versatile instrument interoperability.
  • What are the typical sensitivity and measurement ranges provided by the 140734-02 for vibration and positional signals?
    For vibration and position measurements, 140734-02 delivers sensitivities such as 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil) for radial vibration and shaft position, 0.394 mV/μm or 0.787 mV/μm for differential expansion, and up to 80 mV/μm for REBAM® analysis.
  • How is measurement accuracy characterized for the 140734-02 across its operational parameters?
    Across major measurement functions (direct, gap, 1X, 2X, thrust, differential expansion), 140734-02 exhibits typical accuracy of ±0.33 % of full scale and a maximum of ±1 %, ensuring high fidelity of diagnostic data for protective and maintenance decision making.
  • How does 140734-02 communicate measurement and diagnostic information to plant control and protection systems?
    140734-02 provides buffered transducer outputs with 550 Ω impedance, +4 to +20 mA recorder outputs proportional to full-scale readings, and front-panel status LEDs (OK, TX/RX, Bypass). These interfaces support integration with rack backplanes and supervisory systems for alarm responses and trending.
  • How does 140734-02 support maintenance and operational personnel with actionable condition monitoring data?
    By delivering accurate conditioned signals, alarm states, and proportional outputs for each monitored channel, 140734-02 enables both operators and maintenance engineers to assess machinery health, interpret dynamic behavior, and initiate timely corrective actions before catastrophic failures occur.

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