Bently Nevada 135489-04 TMR Proximitor/Seismic I/O Module | External Terminations

Description

1. Product Overview

The Bently Nevada 135489-04 is a high-integrity Proximitor/Seismic I/O Module designed for TMR (Triple Modular Redundant) configurations within the 3500 Machinery Protection System. This module interfaces with the 3500/42M monitor in a TMR rack to provide the highest level of reliability and fault tolerance for critical rotating machinery.

The 135489-04 is an External Terminations version, meaning it uses a dedicated interface cable to connect to an External Termination Block (ETB). This setup is essential for mission-critical applications where “voting” logic (2-out-of-3) is required to prevent accidental trips while maintaining continuous protection of turbines and large compressors.

Key Applications:

• TMR Protection Systems: Essential for 3500 racks configured for Triple Modular Redundancy.
• Critical Asset Monitoring: Used on primary steam turbines and high-value compressors in oil, gas, and power industries.
• High-Reliability Environments: Prevents a single I/O failure from affecting the machine protection status.

2. Data Sheet

3. Procurement Process

1. Technical Verification: We confirm the 135489-04 part number is correct for your TMR rack configuration.
2. Formal Quotation: You receive a comprehensive quote detailing price, lead time, and express shipping rates.
3. Product Ordering: Review and confirm quantities and technical requirements with our sales team.
4. Sales Contract: Issuance of a Proforma Invoice (PI) to secure the procurement process.
5. Customer Remittance: Secure payment via T/T (Telegraphic Transfer).
6. Goods Allocation: Products are allocated from our climate-controlled, 100% original Bently Nevada stock.
7. Quality Inspection: Verification of original factory seals, serial numbers, and physical pin integrity.
8. Logistics Distribution: Fast worldwide delivery via DHL, FedEx, or UPS with robust, shock-proof packaging.

4. Products Showcase (Photos & Video)

135489-04 sideview

135489-04 label

135489-04 backside

5. Related Models

• Bently Nevada 135137-01 (Proximitor/Seismic Monitor)
• Bently Nevada 135489-01 (Standard External Termination Block for TMR)
• Bently Nevada 125840-01 (Non-TMR Internal Termination I/O)
• Bently Nevada 330100 series (3300 XL Proximity Probes)

6. Warranty & After-Sales

• 12-Month Global Warranty: Full replacement or repair coverage for 1 year.
• Guaranteed Originality: We strictly supply 100% original Bently Nevada parts; no refurbished or third-party units.
• Specialized Logistics: Professional handling and customs documentation for deliveries to Kazakhstan, the UAE, and worldwide industrial sites.

7. FAQ

Q: What does “TMR” mean for this 135489-04 module?

TMR stands for Triple Modular Redundancy. In a TMR system, three monitors and three I/O modules work together. The 135489-04 is the specific I/O module designed to facilitate this redundant wiring, allowing the system to use “voting logic” to decide if a machinery trip is necessary.

Q: Can I use 135489-04 to replace a standard 125840-02?

No. While both use external terminations, the 135489-04 is specifically for TMR racks. A standard rack (Simplex) uses the 125840 series. Using the wrong I/O module will result in configuration errors in the 3500 software.

Q: Does this module include the TMR cable and External Termination Block?

The 135489-04 refers only to the I/O module. The TMR-specific cables and the External Termination Block (ETB) are separate components. Please contact us if you need the full TMR assembly quoted.