Bently Nevada 3300/45-02-02-03-00 Dual Differential Expansion Monitor

Description

Differential Expansion measures the axial position of the rotor relative to the machine casing at a distance from the thrust bearing. Changes in axial position affect axial clearances and are typically caused by thermal expansion during startup and shutdown. This measurement is usually taken with a proximity probe transducer mounted to the machine casing, observing an axial surface (e.g., collar) of the rotor. It is commonly part of a Turbine Supervisory Instrumentation system.

3300/45-AXX-BXX-CXX-DXX Configuration Options

A: Full-scale Range Option

• 0: 0 - 10 mm
• 2: 35 mm

B: Transducer Input Option

• 0: Standard option
• 2: For use with 35 mm transducers

C: Alarm Relay Option

• 0: No relay
• 3: Quad Relay (Epoxy-sealed only)

D: Agency Approval Option

• 0: Not required