Product Details
The 3500/72-01-01 Recip Rod Position Monitor is a four-channel machinery protection module designed for the Bently Nevada 3500 Series system. It processes input signals from proximity transducers to evaluate dynamic piston rod behavior, including rod position, rod drop, and hyper-compressor movement. This specific configuration includes an I/O module with internal terminations and CSA, NRTL, and C agency approvals for hazardous locations.
Functional Operation and Measurement
The module continuously tracks parameters such as position magnitude, position angle, peak-to-peak displacement, and average piston position on a revolution-by-revolution basis. Operators configure measurement channels in pairs using the 3500 Rack Configuration Software to support specific compressor monitoring requirements. Real-time values are evaluated against user-defined alert and danger setpoints to provide reliable machinery protection and drive system alarms.
Hardware Configuration and Agency Approvals
Occupying two front slots in the 3500 rack framework, the module pairs a main processor board with a dedicated rear I/O assembly. The -01 I/O suffix designates an internal termination layout designed to streamline field wiring connections directly at the back of the rack. The second -01 suffix indicates that the unit carries North American CSA, NRTL, and C certifications for safe operation in Class I, Division 2 hazardous areas.
| Parameter | Specification |
|---|---|
| Model | 3500/72-01-01 |
| Brand | Bently Nevada |
| Product Type | Recip Rod Position Monitor |
| Number of Channels | 4 channels |
| Transducer Inputs | Proximity transducers |
| I/O Module Type | Internal terminations [-01] |
| Agency Approval | CSA / NRTL / C (Class I, Division 2) [-01] |
| Slot Occupancy | 2 rack slots |
| Operating Temperature | -30 degC to +65 degC |
| Storage Temperature | -40 degC to +85 degC |
Frequently Asked Questions
Q: What is the primary function of the 3500/72-01-01 monitor?
A: It provides continuous machinery protection and diagnostic data for reciprocating compressors by measuring piston rod position, drop, and dynamic displacement.
Q: What does the -01 I/O module suffix represent?
A: The first -01 suffix denotes an I/O module configuration featuring internal terminations for direct field wiring connections.
Q: Does this specific catalog configuration include hazardous area certifications?
A: Yes, the second -01 suffix indicates CSA, NRTL, and C agency approvals for Class I, Division 2 hazardous locations.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.





























