Description

The BENTLY 135137-01 is a high-precision eddy current proximity probe from Bently Nevada’s 3300 XL series, engineered for non-contact vibration and position monitoring in critical rotating machinery. Designed to API 670 standards, this sensor detects minute changes in shaft displacement, eccentricity, and bearing wear with ±3% accuracy across industrial environments. The 135137-01 features an 8 mm sensing tip with temperature-compensated electronics, maintaining stability from -40°C to +150°C—ideal for steam turbines, compressors, and generators exposed to thermal cycling. Its stainless steel construction and armored polyimide cable withstand oil, moisture, and chemical exposure, while the integrated Quick Disconnect (QD) interface enables rapid replacement without recalibration. When paired with Bently Nevada’s 3300 XL proximitors, the BENTLY 135137-01 generates a linear DC voltage (-2 to -18 V) proportional to gap distance, feeding real-time data to protection systems like the 3500 series for predictive maintenance and machinery safeguarding.

BENTLY 135137-01

Technical Specifications

Main Features and Advantages

Temperature-Stable Accuracy: The BENTLY 135137-01 incorporates thermal compensation algorithms that maintain ±3% sensitivity from -40°C to +150°C, eliminating false alarms in turbine startups or compressor load changes.

Ruggedized Durability: 316 stainless steel housing and crush-resistant cable armor prevent damage in high-vibration zones. Hermetic sealing (IP67) protects against oil ingress in lube oil systems.

Plug-and-Play Integration: Pre-calibrated for Bently Nevada’s 3300 XL proximitors (e.g., 330180-90-00). QD connectors allow tool-free replacement in ≤5 minutes, minimizing downtime during maintenance.

Diagnostic Readiness: Gap voltage trends reveal shaft misalignment or bearing degradation weeks before failure. Compatible with System 1™ software for fleet-wide analytics and ISO 10816 compliance.

Application Areas

The BENTLY 135137-01 is indispensable for safeguarding turbomachinery in energy and heavy industries. In power generation, it monitors steam turbine shaft eccentricity during coast-down to prevent rotor-stator rub. Refineries deploy it on hydrocracker compressors for thrust position detection, triggering shutdowns before axial displacement damages seals. For gas pipeline stations, the probe tracks motor-driven pump bearing wear via vibration spectrum analysis. Hydroelectric plants utilize its wide temperature range for generator air gap monitoring under fluctuating loads. In offshore platforms, ATEX-certified variants (e.g., 135137-02) monitor gas compressor shafts in Zone 1 hazardous areas.

Related Products

BENTLY 330180-90-00: Proximitor for 135137-01 signal conditioning

BENTLY 3500/42M: Monitoring module for vibration/position inputs

BENTLY 149992-01: 5 m armored extension cable

BENTLY 135137-02: ATEX-certified variant for hazardous areas

BENTLY 330103-00-05-10-02-00: 8 mm probe with M10x1 mounting thread

BENTLY TK-3-2E: Probe gap calibration tool

BENTLY 330104-00-05-10-02-00: High-temperature probe (260°C)

BENTLY 135137-01

Installation and Maintenance

Pre-installation preparation: Verify target material compatibility (carbon steel ≥4140). Clean mounting hole with isopropyl alcohol. Set initial gap to 1.27 mm (50 mils) using TK-3-2E gauge for -10 V output. Route cable away from high-voltage sources (>1 m separation).

Maintenance recommendations: Quarterly gap voltage checks; deviations >±0.5 V indicate probe degradation. Inspect cable armor annually for abrasions. Replace if insulation resistance <5>