Bently Nevada 125672-02 3500/42 Proximitor/Seismic Monitor

The 125672-02 3500/42 Proximitor/Seismic Monitor is a four-channel monitor designed to accept input from Proximitor and seismic transducers, which it then uses to trigger alarms. This monitor can be configured via 3500 Rack Configuration Software to perform various monitoring functions, including Radial Vibration, Thrust Position, Eccentricity, Differential Expansion, Acceleration, and Velocity. It is compatible with a wide range of Bently Nevada transducers, such as Proximitor and Velomitor models, as well as high-temperature and high-frequency interface modules.

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Technical Specifications

Inputs

• Signal: Accepts 1 to 4 signal inputs.
• Input Impedance:
  • Standard I/O: 10 kΩ
  • TMR I/O (Proximitor and Acceleration Inputs): 50 kΩ (Bussed Transducer Configuration), 150 kΩ (Discrete Transducer Configuration)
• Power Consumption: 7.7 watts nominal
• Sensitivity:
  • Radial Vibration, Thrust, 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)
  • Acceleration: 10 mV/(m/s²) (100 mV/g)
  • Velocity: 20 mV/(mm/s) peak (500 mV/(in/s) peak), 5.8 mV/(mm/s) peak (145 mV/(in/s) peak), 4 mV/(mm/s) peak (100 mV/(in/s) peak)

Outputs

• Front Panel LEDs:
  • OK LED: Indicates operational status.
  • TX/RX LED: Signals communication with other 3500 rack modules.
  • Bypass LED: Indicates when the module is in Bypass Mode.
• Buffered Transducer Outputs:
  • One coaxial connector per channel, with short-circuit protection.
  • Output Impedance: 550 Ω
• Transducer Supply Voltage: -24 VDC
• Recorder Output: +4 to +20 mA, proportional to monitor full scale; individual recorder values for each channel, unaffected by output short circuits.
• Voltage Compliance (Current Output): 0 to +12 VDC across load, with a load resistance range of 0 to 600 Ω.
• Resolution: 0.3662 µA per bit, ±0.25% error at room temperature, with a ±0.66% to ±0.70% error over the temperature range.

Signal Conditioning (at +25° C / 77° F)

• Radial Vibration Frequency Response:
  • Direct Filter: User-programmable for 4 to 4,000 Hz or 1 to 600 Hz.
  • Gap Filter: -3 dB at 0.09 Hz.
  • 1X & 2X Vector Filter: Constant Q filter with minimum -57.7 dB stopband rejection.
• Thrust and Differential Expansion Frequency Response:
  • Direct Filter: -3 dB at 1.2 Hz
  • Gap Filter: -3 dB at 0.41 Hz
• Accuracy:
  • Direct and Gap: ±0.33% of full scale, typical; ±1% maximum.
  • 1X & 2X Vector: ±0.33% of full scale, typical; ±1% maximum.

Environmental Limits

• Operating Temperature:
  • -30 to 65° C (-22 to 150° F) with Internal/External Termination Proximitor/Seismic I/O Module.
  • 0 to 65° C (32 to 150° F) with Internal Barrier I/O Module.
• Storage Temperature: -40 to 85° C (-40 to 185° F)
• Humidity: Up to 95% non-condensing

Physical Specifications

• Main Board Dimensions (H x W x D): 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)
• Weight: 0.91 kg (2.0 lbs)

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Contact Us

• Phone: +86-15915488782
• Email: uma@meloauto.com
• WhatsApp: +8615915488782
• Business Hours: 24/7 service
• Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

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