Product Details:

Bently Nevada 72870-03 is the RVXY-II dual axis vibration monitor card for Bently Nevada 7200 and 3300 turbine supervisory instrumentation systems. This rack-mounted module pairs with two orthogonally mounted eddy current proximity probes to capture X-axis and Y-axis non-contact vibration signals from rotating metal shafts. It continuously calculates peak-to-peak vibration amplitude and generates real-time shaft orbit diagrams, which help engineers observe rotor dynamic behavior under steady-state, startup and coast-down operating conditions. The 72870-03 allows independent alert and danger threshold configuration for each channel. When vibration exceeds the preset limit, the module activates relay contact alarm output and analog recording signals to DCS and data recorders for fault trending and analysis. Built-in circuit provides sensor fault detection, identifying probe open circuit, short circuit and cable faults to speed up on-site troubleshooting. Integrated signal filtering suppresses electromagnetic noise and spurious pulses from industrial environments with heavy vibration and electrical interference in power plants and petrochemical plants. Installed in standard rack slots, the card communicates with rear terminal boards to receive transducer signals and send alarm status. It maintains stable measurement accuracy for long-term continuous operation. Widely used in power generation, petrochemical and metallurgy industries, this shaft orbit monitor is essential safety hardware for steam turbines, centrifugal compressors and generators. It enables plant operators to view real-time orbit and vibration data, detect early faults such as rotor imbalance, shaft misalignment and oil whirl, avoid internal rubbing and catastrophic mechanical damage, and support predictive maintenance for critical rotating machinery assets.

Core Attributes:

Brand: Bently Nevada

Model: 72870-03

Product Type: RVXY-II Vibration Monitor Card / Dual Axis Vibration Monitoring Module

Compatible System: Bently Nevada 7200 / 3300 TSI monitoring rack

Input Channels: Dual independent X and Y vibration input channels

Function: X/Y radial vibration measurement, shaft orbit monitoring, configurable alarm thresholds, relay output, sensor fault diagnosis

Mounting: Rack slot installation

Operating Temperature: 0°C ~ +65°C

Feature: Dual axis orbit measurement, built-in signal filtering, relay alarm latch, convenient on-site sensor fault troubleshooting