Product Details:

Bently Nevada 72941-02-02-01-01-07 is a case expansion indicator PCB board, a dedicated rack-mounted monitor module built for Bently Nevada 3300 turbine supervisory instrumentation system. This circuit board is designed to work with displacement sensors to measure the thermal expansion movement of turbine casing during startup, load change and shutdown cycles. Large steam turbines will expand and contract significantly under temperature variation, and uneven casing expansion can lead to internal rub, misalignment and serious damage to rotating and stationary components. The case expansion indicator converts the physical displacement signal from the transducer into standard readable signals, supports configurable alert and danger alarm thresholds, and outputs analog recording signals to remote DCS, PLC and data recording systems for continuous trend tracking. The 72941-02-02-01-01-07 adopts industrial PCB assembly and high stability signal conditioning circuits, equipped with built-in fault diagnosis functions to detect sensor open circuit, short circuit and wiring faults, helping maintenance personnel quickly locate loop problems on site. It comes with excellent anti-electromagnetic interference performance, maintaining stable measurement accuracy under continuous vibration and electrical noise environments in power plant control rooms. Installed in the 3300 instrument rack slot, this PCB board can communicate reliably with the rack backplane and other monitoring cards, supporting long-term uninterrupted operation. Widely applied 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 sticking conditions at an early stage, avoid turbine internal rubbing and catastrophic mechanical failure, reduce unplanned production downtime and support the plant’s predictive maintenance strategy for critical rotating machinery assets.

Core Attributes:

Brand: Bently Nevada

Model: 72941-02-02-01-01-07

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 noise suppression, historical trend data recording