Product Details:

Bently Nevada 72857-01B is a rack-mounted RVXY-II dual axis vibration monitor card belonging to Bently Nevada 7200 and 3300 turbine supervisory instrumentation systems. This monitor pairs with two orthogonally arranged eddy current proximity probes to capture X-axis and Y-axis non-contact displacement signals from rotating metal shafts. It calculates peak-to-peak vibration values and generates real-time shaft orbit diagrams for rotor dynamic analysis. The 72857-01B supports independent alert and danger alarm threshold configuration for each channel. When vibration exceeds preset limits, the module triggers relay contact alarm output and analog recording signals sent to DCS and data recording systems for continuous trend tracking. Built-in sensor fault detection can identify probe open circuit, short circuit and cable loop damage, allowing field technicians to quickly troubleshoot sensor wiring faults. Integrated signal noise filtering suppresses electromagnetic interference and spurious pulse signals under harsh industrial environments with continuous mechanical vibration and electrical noise in power plant and petrochemical sites. Installed inside standard 3300 instrument rack slots, this card communicates reliably with rack backplane and rear terminal boards, maintaining stable performance for long-term uninterrupted operation. Widely applied in power generation, petrochemical and metallurgy industries, this machinery vibration monitor is core safety hardware for steam turbines, centrifugal compressors and generators. It helps plant operators observe real-time shaft orbit and vibration data, detect early mechanical faults such as rotor imbalance and shaft misalignment, avoid internal rubbing and catastrophic mechanical damage, and support the plant's predictive maintenance strategy for critical rotating assets.

Core Attributes:

Brand: Bently Nevada

Model: 72857-01B

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

Compatible System: Bently Nevada 7200 / 3300 series 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 noise filtering, relay alarm latch, fast on-site sensor fault troubleshooting