3500/77M 176449-07 BENTLY cylinder pressure monitor


3500/77M 176449-07

Firmware and Software Revisions Required:
3500/77M Module Firmware Revision L
3500/01 Software – Version 3.00
3500/02 Software – Version 2.30
3500/03 Software – Version 1.30

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3500/77M 176449-07 BENTLY cylinder pressure monitor

Thank you for providing detailed information about the Bently Nevada 3500/77M Recip Cylinder Pressure Monitor. Here’s a summary:


  • Type: 4-channel monitor
  • Input: Accepts input from Bently Nevada approved pressure transducers
  • Functionality: Conditions the signal for various pressure measurements for reciprocating compressors
  • Purpose:
    • Provides machinery protection by comparing monitored parameters against configured alarm setpoints.
    • Offers essential machine information for operations and maintenance personnel.

Measured Variables (Each Channel):

  • Discharge Pressure
  • Suction Pressure
  • Maximum Pressure
  • Minimum Pressure
  • Compression Ratio

Configuration Options:

  • Users can configure Alert setpoints for each active measured variable.
  • Danger setpoints can be configured for any two of the active measured variables.

Ordering Considerations:

  • Firmware and Software Revisions Required:
    • 3500/77M Module Firmware Revision L
    • 3500/01 Software – Version 3.00
    • 3500/02 Software – Version 2.30
    • 3500/03 Software – Version 1.30
  • External Termination Blocks cannot be used with Internal Termination I/O Modules.
  • For I/O Modules with External Terminations, External Termination Blocks and Cables must be ordered separately.
  • The standard product has a lower limit for machine speed at 60 RPM. For machine speeds down to 30 RPM, modification 135M8200-01 is required.


  • Inputs:
    • Signal: Accepts 1 to 4 channels of Bently Nevada approved positive voltage 3rd-party pressure transducers (psia).
  • Scale Factor Range:
    • 95,000 mV/psi for 100 psia
    • 38,000 mV/psi for 250 psia
    • 19,000 mV/psi for 500 psia
    • 9,500 mV/psi for 1000 psia
    • 3,800 mV/psi for 2500 psia
    • 1,900 mV/psi for 5000 psia
    • 950 mV/psi for 10,000 psia

This information provides a comprehensive overview of the Bently Nevada 3500/77M Recip Cylinder Pressure Monitor, including its functionality, purpose, configuration options, and specifications. If you have any specific questions or need further details, feel free to ask.


Contact information:


WeChat/Mobile: 18106937731

Official website: www.geabb.com

Email: geabbdcs@gmail.com


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