Description

Product Overview

The 135489-01 is the rear I/O barrier card for the Bently Nevada 3500/42M proximitor seismic monitor, compatible also with 3500/70 and 3500/72 monitor assemblies. It integrates intrinsic safety barriers and built‑in screw terminations for four channels of proximity probes or accelerometers, eliminating separate external safety barriers. It limits energy to field transducers for hazardous area installations while processing shaft displacement, gap, acceleration and velocity signals, and sends conditioned data to the front monitor board over the backplane. It is widely used on turbines, centrifugal compressors and reciprocating compressors in refineries, petrochemical and offshore sites.

Technical Specifications

• Brand: Bently Nevada (Baker Hughes)
• Model: 135489-01
• Warranty: One Year
• Condition: 100% New & Original
• Input/Output: 4 configurable channels for proximity probes or seismic accelerometers; internal IS barriers; integrated field screw terminals
• Operating Temp: -40°C to +70°C
• Communication: TriBus backplane interface to 3500/42M front monitor
• Frequency Bandwidth: Up to 30 kHz for proximity and acceleration inputs
• Measurement Types: Shaft displacement, gap, acceleration, velocity
• Safety Design: Built‑in intrinsic safety barriers, no external barrier required
• Variant Difference: Internal termination version; other part numbers use external terminal assemblies
• Compatible Monitors: 3500/42M, 3500/70, 3500/72
• Hot Swap: Yes, when fitted in 3500 rack
• Diagnostics: Transducer fault detection, open/shorted probe, signal out‑of‑range
• Form Factor: Rear I/O card matching full‑height 3500 monitor
• Certifications: ATEX, IECEx, compliant with API 670
• Origin: USA
• Lifecycle: Standard spare for hazardous‑area 3500 vibration monitoring