New Original Bently Nevada 3500/72M-01-00 176449-08 Reciprocating Rod Position Monitor in Stock

The Bently Nevada 3500/72M-01-00 is a 4-Channel Reciprocating Rod Position Monitor for the 3500 Machinery Protection System, configured with the 176449-08 main board and the 140471-01 Proximitor/Seismic I/O Module with internal terminations. It accepts input from proximity transducers to measure piston rod position, rod drop, and hyper-compressor parameters on reciprocating compressors.

  • Item No :

    176449-08
  • Order(MOQ) :

    1 Piece
  • Payment :

    EXW/CIF
  • Product Origin :

    USA
  • Shipping Port :

    Wuhan
  • Lead Time :

    3-5days
  • Weight :

    3kg
  • Product Details

     
     
    Specification Description
    Manufacturer Bently Nevada (Baker Hughes)
    Model 3500/72M-01-00
    Main Board Part Number 176449-08
    I/O Module Part Number 140471-01 (Internal Terminations) 
    Product Type 4-Channel Reciprocating Rod Position Monitor
    Number of Channels 4 (configured in pairs: CH1/2 and CH3/4) 
    Supported Sensors Proximity transducers (Bently Nevada 3300 XL series)
    Measurement Functions Rod Position, Rod Drop, Hyper-Compressor 
    Input Impedance 10 kΩ 
    Accuracy ±0.33% of full-scale typical; ±1.0% maximum 
    Alarm Setpoints Alert: 0-100% full-scale; Danger: any two measured values 
    Power Consumption 7.7 W typical 
    Front Panel LEDs OK, TX/RX, Bypass
    Operating Temperature -30°C to +65°C (-22°F to +149°F) 
    Storage Temperature -40°C to +85°C (-40°F to +185°F) 
    Main Module Dimensions 263 mm × 58 mm × 28 mm 
    Main Module Weight 0.91 kg (2.0 lbs) 
    Rack Space 1 full-height front slot + 1 full-height rear I/O slot
    Safety Certification SIL 2 (IEC 61508), TÜV certified 
    Compliance API 618, API 670 
    Country of Origin USA 

    Related Product Model Recommendations

     
     
    Model Description Typical Application
    3500/72M-01-00 (this model) Rod Position Monitor with internal terminations (176449-08 + 140471-01) Standard rod position monitoring with internal wiring 
    3500/72M-02-00 Rod Position Monitor with external terminations (140482-01) Applications requiring external wiring access 
    3500/72M-03-00 Rod Position Monitor with internal barriers + internal terminations (135489-01) Hazardous area (intrinsically safe) applications 
    176449-08 Rod Position Monitor Main Board Spare/replacement main card 
    140471-01 Proximitor/Seismic I/O Module with Internal Terminations Spare/replacement I/O module 
    3500/70M Reciprocating Impulse/Velocity Monitor Impact and velocity monitoring on reciprocating machinery 
    3500/77M Reciprocating Cylinder Pressure Monitor Cylinder pressure monitoring on reciprocating compressors 

    FAQs

    Q1: What is the primary function of the 3500/72M-01-00?

    It is a 4-channel reciprocating rod position monitor that accepts input from proximity transducers to measure piston rod position, rod drop (rider band wear), and hyper-compressor parameters on reciprocating compressors. It provides machinery protection by comparing monitored parameters against user-programmable alarm setpoints.

    Q2: How are the channels configured?

    The 4 channels are configured in pairs. Channels 1 and 2 must be configured as the same channel type, and channels 3 and 4 must be configured as the same channel type. This allows a single module to simultaneously monitor two different rod position functions (e.g., Rod Position on CH1/2 and Rod Drop on CH3/4) .

    Q3: What is the difference between 176449-08 and 140471-01?

    The 176449-08 is the Rod Position Monitor main board (front card) that processes transducer signals and generates alarms. The 140471-01 is the Proximitor/Seismic I/O Module (rear module) that provides the physical terminal connections for field wiring . Both are required together to form a complete monitoring channel.

    Q4: Can the 3500/72M-01-00 be used in a Triple Modular Redundant (TMR) configuration?

    No. The 3500/72M is a standard (non-TMR) monitor. For TMR applications, it must be installed in a TMR rack with a TMR Rack Interface Module and appropriate voting logic. The 3500/72M supports SIL 2 applications when used in a certified 3500 system.

    Q5: What are the common causes of "Rod Drop Measurement Errors" after module replacement?

    Common causes include:

    • Configuration not downloaded: Factory default settings rarely match the specific compressor logic. The original configuration file must be downloaded to restore the correct measurement mode.

    • Zero-position calibration required: Rod drop measurements are relative changes. The zero position must be re-calibrated after module installation.

    • Probe/Proximitor mismatch: Verify gap voltage is within the manufacturer’s specified linear range.

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