Bently Nevada 3500/72M 140734-08 Recip Rod Position Monitor Module
Manufacturer: Bently Nevada
Product No.: 140734-08
Condition： In stock
Product Type: Position Monitor Module
Product Origin: USA
Payment: T/T, Western Union
Weight: 910g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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Product Overview
The Bently Nevada 3500/72M 140734-08 delivers continuous machinery protection for reciprocating compressors.
This four-channel monitor accepts signals from proximity transducers.
It conditions input signals to track dynamic and static rod position.
The module compares conditioned values against user-programmable alarm setpoints.
It fully satisfies API 618 machinery monitoring requirements.
Technical Specifications
| Parameter Category | Specification Details |
|---|---|
| Brand | Bently Nevada |
| Part Number | 3500/72M 140734-08 |
| Product Series | Bently Nevada 3500 Series System |
| Module Type | Reciprocating Rod Position Monitor Module |
| Channels & Inputs | 4 channels accepting 1 to 4 proximity probe inputs |
| Input Impedance | 10 kΩ |
| Nominal Scale Factors | 0.79 mV/µm (20 mV/mil), 3.94 mV/µm (100 mV/mil), or 7.87 mV/µm (200 mV/mil) |
| Measurement Accuracy | Within ±0.33% of full-scale typical (±1% maximum) |
| Frequency Response | Direct Position: Fixed 1 Hz to 600 Hz; Gap Filter: -3 dB at 0.09 Hz |
| Power Consumption | 7.7 Watts nominal |
| Transducer Power Supply | -24 Vdc output |
| Buffered Outputs | Front coaxial connector per channel (510 Ω output impedance) |
| Physical Dimensions | 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) |
System Compatibility & Architecture
- Integrates seamlessly into the Bently Nevada 3500 Series rack system.
- Communicates via standard 3500 backplane protocol across all rack slots.
- Pairs with standard proximity transducer systems including 3300 XL probes.
- Supports single channel, pair channel, rod drop, and hyper-compressor configurations.
Installation Guide
- Slide the module into an open rack slot until it seats securely.
- Tighten the captive thumb screws to lock the module in place.
- Connect proximity probe field wiring to the corresponding rear terminal block.
- Ensure proper grounding of cable shields to prevent signal noise interference.
Commissioning & Maintenance Ease
- Front-panel status LEDs show OK, TX/RX, and Bypass operational states.
- Front-panel coaxial connectors provide quick buffered output access for diagnostic instruments.
- Short-circuit protection on buffered outputs prevents hardware damage during testing.
- Operators adjust software configuration parameters through 3500 Rack Configuration Software.
Typical Application Scenarios & Diagnostic Capabilities
The Bently Nevada 3500/72M 140734-08 monitors critical reciprocating compressor components.
It processes key parameters to detect mechanical degradation early.
- Rod Drop Monitoring: Tracks rider ring wear in real time to prevent piston-to-cylinder contact.
- Rod Position Measurements: Evaluates average and instantaneous piston position relative to crank angle.
- Hyper-Compressor Analysis: Monitors peak-to-peak displacement, 1X, 2X, and Not 1X vibration amplitudes.
- Diagnostic Data Capture: Generates phase vector data and gap voltage metrics for predictive maintenance.
Compliance & Certifications
- Meets API 618 machinery protection standards for reciprocating compressors.
- Complies with international EMC standards for industrial electromagnetic immunity.
- Meets CE compliance standards for electronic industrial automation hardware.
Global PLC Spare HUB's Insight
Our field engineering team frequently deploys the 3500/72M 140734-08 on heavy-duty hydrogen reciprocating compressors.
Rider ring failure causes severe cylinder scoring and costly unscheduled shutdown events.
In one refinery installation, this module detected 0.15 mm of gradual rider ring wear over six months.
The early alarm enabled planned maintenance during a scheduled outage, saving significant repair costs.
Selection & Ordering Guide
- Confirm your compressor type requires API 618 compliant rod position tracking.
- Verify that your probe scale factor matches 20 mV/mil, 100 mV/mil, or 200 mV/mil.
- Ensure your system rack has an available full-height slot for installation.
- Select matching rear termination modules based on your field wiring configuration.
Package Contents & Delivery Terms
- Package Contents: 1 x Bently Nevada 3500/72M 140734-08 Monitor Module.
- Warranty: Includes a comprehensive 12-month factory warranty.
- Dispatch Time: Ships within 24 to 48 hours following order confirmation.
- Courier Partners: Worldwide express delivery via FedEx, UPS, and DHL.
Frequently Asked Questions
What key function does this module perform in reciprocating compressor monitoring?
It conditions proximity probe signals to measure rod position, rider ring wear, and overall rod drop.
Can I access raw vibration signals directly from the front panel?
Yes, individual coaxial connectors on the front panel provide buffered transducer outputs for analytical tools.
What field calibration procedure prevents false alarms during commissioning?
Engineers must zero the probe gap voltage at top dead center with cold mechanical alignment settings recorded.
Which running speed range supports 1X and 2X vector measurements?
Vector parameters remain valid across machine operating speeds from 60 cpm to 2130 cpm.
Tags
Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
Q: Can I get a formal quotation with shipping costs?
A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
Need Technical Assistance?Not sure if this part is compatible with your system? [Consult our Engineers] before purchasing to ensure 100% compatibility.
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