3500/72-01-00 Bently Nevada Recip Rod Position Monitor

3500/72-01-00 Bently Nevada Recip Rod Position Monitor

Key Features and Technical Specifications

• Channels and Configuration: The 3500/72-01-00 accepts signals from one to four proximity probes. You program channels in pairs, with channels 1 and 2 performing one function while channels 3 and 4 perform another or the same function.
• Measurement Functions: This Bently Nevada monitor measures rod position, rod drop, and hyper-compressor parameters. It meets API 618 requirements for reciprocating compressors.
• Input and Power: The monitor has an input impedance of 10 kΩ. It consumes 7.7 watts of power nominally.
• Front Panel Indicators: The OK LED indicates proper operation. The TX/RX LED shows communication with other 3500 rack modules. The Bypass LED indicates Bypass Mode activation.
• Buffered Outputs: Each channel includes a front coaxial connector for buffered transducer outputs. These connectors are short-circuit protected with an output impedance of 510 Ω.

Performance and Accuracy Data

• Frequency Response: The peak-peak filter operates at a fixed 1 Hz to 600 Hz range. The gap filter has a -3 dB point at 0.09 Hz. The average piston position filter also covers 1 Hz to 600 Hz.
• Accuracy Specifications: Peak-peak amplitude and position magnitude both achieve ±0.33% of full-scale typical, with ±1% maximum. Gap measurements follow the same accuracy standards.
• Angle Accuracy: Rod position angle (paired only) reaches ±1° typical and ±3° maximum. Position crank angle achieves the same accuracy levels.
• Rod Position Single and Pair Channels: The peak-peak filter remains fixed at 1 Hz to 600 Hz. The gap filter maintains -3 dB at 0.09 Hz. The Not 1X filter uses a constant Q notch filter with a minimum rejection of 34.9 dB over the stopband.
• Vector Filters: The 1X and 2X vector filters use constant Q filters with a minimum rejection of 57.7 dB. These parameters are valid for machine speeds of 60 cpm to 2130 cpm.

Alarm and Safety Features

• Programmable Setpoints: You configure alert setpoints for each active measured value. You can set danger setpoints for any two active measured values from 0 to 100% of full-scale.
• Alarm Accuracy: Setpoint accuracy remains within 0.13% of the desired value.
• Time Delays: Alert delays range from 1 to 60 seconds in one-second intervals. Danger delays can be set to 0.1 seconds nominal or from 1 to 60 seconds.
• Timed OK Channel Defeat: This feature is disabled for all Rod Position and Rod Drop configurations. For hyper-compressor monitoring, the monitor issues an immediate Danger alarm when both transducers are NOT OK.

Physical Specifications and Environmental Limits

• Monitor Module: The main board measures 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) and weighs 0.91 kg (2.0 lb).
• I/O Modules (Non-Barrier): These modules measure 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in) and weigh 0.20 kg (0.44 lb).
• I/O Modules (Barrier): These modules measure 241.3 mm x 24.4 mm x 163.1 mm (9.50 in x 0.96 in x 6.42 in) and weigh 0.46 kg (1.01 lb).
• Rack Space: The monitor occupies one full-height front slot. The I/O module occupies one full-height rear slot.
• Operating Temperature: With Internal/External Termination Proximitor/Seismic I/O Module, the range is -30°C to +65°C (-22°F to +149°F). With Internal Barrier I/O Module, the range is 0°C to +65°C (32°F to +149°F).
• Storage Temperature: The module can be stored from -40°C to +85°C (-40°F to +185°F). It operates reliably in 95% humidity, non-condensing environments.

Measured Values and Data Output

• Rod Position Single Channel: The monitor returns Position Magnitude, Position Angle, Crank Angle, Pk-Pk Amplitude, Gap, 1X Amplitude, Not 1X Amplitude, and 2X Amplitude.
• Rod Position Single 2 Channel: This configuration provides Pk-Pk Amplitude, Position Magnitude, Position Angle, Crank Angle, Gap, Average Piston Position, Instantaneous Piston Position, and Instantaneous Probe Gap.
• Rod Position Pair Channel: The monitor generates Position Magnitude, Position Angle, Crank Angle, Pk-Pk Amplitude, Gap, 1X Amplitude, Not 1X Amplitude, and 2X Amplitude for paired channels.
• Rod Drop Channel: This mode provides Average Piston Position, Average Probe Gap, Instantaneous Piston Position, and Instantaneous Probe Gap.
• Hyper Channel: The monitor measures Pk-Pk Displacement, Gap, 1X Amplitude, Not 1X Amplitude, and 2X Amplitude.

Frequently Asked Questions (FAQ)

• Is the 3500/72-01-00 Bently Nevada monitor a new unit?
  Yes, we supply this Bently Nevada monitor as a brand new, original unit.
• What is the stock availability for the 3500/72-01-00?
  We maintain this monitor in stock and available for immediate order processing.
• What is the lead time for shipping the 3500/72-01-00?
  We ship orders within 5 business days after order confirmation.
• Which carriers do you use for delivery?
  We ship using FedEx, UPS, or DHL for reliable worldwide delivery.
• Can I return the 3500/72-01-00 if it does not meet my needs?
  Yes, we support returns within 30 days of delivery.
• What input signals does the 3500/72-01-00 Bently Nevada monitor accept?
  The monitor accepts one to four proximity transducer signals with 10 kΩ input impedance.
• What accuracy can I expect from the 3500/72-01-00?
  The monitor provides ±0.33% of full-scale accuracy typically, with ±1% maximum for most parameters.
• What functions can the 3500/72-01-00 monitor perform?
  The monitor measures rod position, rod drop, and hyper-compressor parameters.

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