Product Details:

Bently Nevada 72940-02-02-01-01-11 is a rack-mounted case expansion indicator PCB board, a dedicated monitoring module for Bently Nevada 3300 series turbine supervisory instrumentation system. This circuit board works with displacement transducers to measure thermal expansion movement of steam turbine casing during equipment startup, load change and shutdown cycles. When the turbine heats up or cools down, the casing will expand or contract, and uneven thermal growth may lead to internal rubbing, misalignment and severe damage to rotating and stationary components. The case expansion indicator converts physical displacement signals from the transducer into readable standard signals, supports independent configuration of alert and danger alarm thresholds, and outputs analog recording signals to remote DCS, PLC and data recording systems for continuous trend tracking and fault review. The 72940-02-02-01-01-11 adopts industrial PCB assembly and high-stability signal conditioning circuits. Built-in sensor fault diagnosis functions can detect probe open circuit, short circuit and wiring breakage, helping maintenance technicians quickly locate sensor loop faults on site. It is equipped with excellent anti-electromagnetic interference performance, maintaining stable measurement accuracy under continuous mechanical vibration and electrical noise in power plant control rooms and petrochemical industrial sites. Installed in the 3300 instrument rack slot, this PCB board communicates reliably with rack backplane and other monitoring cards to support long-term uninterrupted operation. Widely deployed in power generation, petrochemical and metallurgy industries, this turbine casing expansion monitor is essential safety hardware for steam turbine protection systems. It allows plant operators to monitor casing thermal growth in real time, identify abnormal expansion or stuck conditions at an early stage, avoid catastrophic mechanical collision and unplanned production downtime, and support the plant’s predictive maintenance strategy for critical rotating machinery assets such as steam turbines, centrifugal compressors and generators.

Core Attributes:

Brand: Bently Nevada

Model: 72940-02-02-01-01-11

Product Type: Case Expansion Indicator PCB Board

Compatible System: Bently Nevada 3300 series TSI monitoring rack

Measured Parameter: Turbine casing thermal expansion displacement

Function: Displacement signal conditioning, configurable alarm thresholds, analog recording output, sensor loop fault diagnosis

Mounting: Rack slot installation

Operating Temperature: 0°C ~ +65°C

Feature: Real-time casing expansion monitoring, built-in sensor fault detection, industrial electromagnetic noise suppression, continuous trend recording