Bentley 128229-01

Description

Detailed parameter table

Bentley 128229-01

Product introduction

The 128229-01 from Bently Nevada is a high-performance extension cable assembly, specifically engineered to connect proximity probes to monitoring systems in industrial machinery applications. As a critical accessory in Bently Nevada’s sensor ecosystem, the 128229-01 ensures reliable signal transmission between probes and proximitors, even in harsh operating environments.

Designed to complement Bently Nevada’s 3300 series proximity probes—such as the 330130-080-00-CN—the 128229-01 features a 5m shielded cable with rugged MIL-spec connectors, providing the flexibility to position monitoring equipment away from vibrating machinery. Its ability to maintain signal integrity across extreme temperatures and pressures makes the 128229-01 an essential component in machinery protection systems, ensuring accurate measurement of shaft position, vibration, and speed in critical assets like turbines, compressors, and motors.

Core advantages and technical highlights

Extreme environment performance: The 128229-01 is built to withstand the toughest industrial conditions. Its FEP jacket and PTFE insulation resist chemical corrosion, while the cable operates reliably from -54°C to 204°C—making it suitable for applications near high-temperature machinery like steam turbines or in cryogenic environments. With a pressure rating of 10,000 psi, it performs consistently in high-pressure systems such as hydraulic machinery or deep-well pumps.

Superior signal integrity: Equipped with double shielding (foil + braid) and twisted-pair conductors, the 128229-01 minimizes electromagnetic interference (EMI) and radio frequency interference (RFI) that can corrupt sensor signals. This shielding ensures that proximity probe data—critical for machinery health monitoring—remains accurate, even when routed near motors, transformers, or other high-voltage equipment.

Rugged connectivity: The 128229-01 features MIL-C-5015 compatible connectors, renowned for their durability in vibration-prone environments. These connectors provide a secure, moisture-resistant seal that prevents dust and liquids from compromising signal transmission, while their bayonet locking mechanism ensures a tight fit that withstands constant machinery vibration. This rugged design reduces maintenance needs and extends service life in demanding applications.

Typical application scenarios

In gas turbine installations, the 128229-01 connects proximity probes mounted on turbine shafts to monitoring systems located in control rooms or equipment enclosures. Its ability to withstand high temperatures near turbine casings (up to 204°C) ensures reliable transmission of shaft vibration data, which is critical for detecting issues like rotor imbalance or bearing wear. The 5m length allows technicians to position monitoring equipment away from the turbine’s heat source, protecting sensitive electronics.

Within oil and gas pipelines, the 128229-01 is used to extend connections between proximity probes on centrifugal compressors and remote monitoring panels. Its chemical-resistant FEP jacket withstands exposure to hydrocarbons and industrial cleaners, while the double shielding prevents interference from nearby pipeline pumps or electrical infrastructure. This ensures accurate measurement of compressor shaft position, helping prevent costly leaks or equipment failures.

In nuclear power plants, the 128229-01 plays a vital role in connecting proximity probes in reactor coolant pumps to safety-critical monitoring systems. Its compliance with strict industry standards, combined with radiation-resistant materials, ensures reliable performance in controlled areas. The 128229-01’s rugged design minimizes the risk of signal failure, which is essential for maintaining reactor safety and preventing unplanned shutdowns.

Bentley 128229-01

Related model recommendations

128229-02: A 10m version of the 128229-01, offering extended reach for larger machinery installations where greater distance between probes and monitors is required.

128229-03: A 2m shorter variant of the 128229-01, ideal for compact setups where minimal cable length is needed to reduce clutter.

330130-080-00-CN: A proximity probe commonly paired with the 128229-01 for shaft displacement measurement in rotating machinery.

330138-040-00-05: A proximitor that works with the 128229-01 to condition signals from proximity probes, forming a complete measurement system.

330180-91-CN: A calibration tool used to verify the performance of sensor systems including the 128229-01 and connected probes.

128230-01: A cable repair kit designed for the 128229-01, containing replacement connectors and shielding for field repairs.

3500/42-01-00: A vibration monitor module that receives signals via the 128229-01 from proximity probes, enabling centralized machinery health monitoring.

Installation, commissioning and maintenance instructions

Installation preparation: Before installing the 128229-01, ensure the cable route is free from sharp edges, excessive bending, or contact with high-temperature surfaces. Use proper cable clamps to secure the 128229-01 at 30cm intervals to prevent movement that could damage the jacket or connectors. When mating connectors, align the pins carefully to avoid bending—tighten the bayonet coupling until it clicks to ensure a proper seal. Avoid stretching the cable or exceeding the minimum bend radius (10x cable diameter) to prevent conductor damage.

Maintenance suggestions: Inspect the 128229-01 quarterly for signs of jacket damage, connector corrosion, or shielding wear. Clean connectors with a dry, lint-free cloth before mating to remove debris. Check for loose connections during routine maintenance, as vibration can gradually loosen couplings. If the cable is damaged, use the 128230-01 repair kit for field fixes, ensuring proper shielding continuity to maintain signal integrity. Store spare 128229-01 cables in a dry, temperature-controlled environment to prevent jacket degradation.

Service and guarantee commitment

The 128229-01 is backed by a 3-year warranty, covering defects in materials and workmanship under normal operating conditions. Bently Nevada’s global technical support team provides guidance on proper installation, routing, and maintenance of the 128229-01, with 24/7 availability for critical inquiries.

We offer training modules on cable system best practices, including proper handling of the 128229-01 and troubleshooting signal integrity issues. For customers requiring validation, we provide testing services to verify the 128229-01’s performance against industry standards. Bently Nevada’s commitment to quality ensures that the 128229-01 delivers reliable signal transmission, supporting the integrity of your machinery monitoring systems throughout its service life.