81544-01 XDUCR I/O & Record Terminals

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	81544-01
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 81544-01 XDUCR I/O & Record Terminals are designed for use with the 3300/45 Dual Differential Expansion Monitor in automated turbine systems. Supporting two channels of continuous differential expansion monitoring, the 81544-01 tracks size and direction of expansion with two over and two under alarm setpoints per channel. Channel B can be turned OFF for single-point measurements. The 81544-01 accepts two proximity probe transducer signals with 10 kΩ input impedance, capturing axial rotor position relative to the machine casing. Integrated into Turbine Supervisory Instrumentation (TSI) systems, the 81544-01 enables real-time monitoring of thermal expansion effects during startup and shutdown. Compact dimensions of 5 × 9.8 × 22.8 cm and weight of 0.26 kg allow easy installation in automation racks. The 81544-01 ensures accurate, continuous data for automated rotor tracking, axial clearance measurement, and process control applications, providing actionable readings directly to control systems and SCADA networks.

Applications

Power Generation: Steam Turbine Differential Expansion Monitoring: In large generator sets, real-time monitoring of the expansion difference between the rotor and cylinder prevents severe axial collisions caused by inconsistent temperature rise rates.

Large Generator Monitoring: Used to monitor the displacement between the generator stator and rotor, preventing damage to winding insulation due to abnormal expansion.

Oil & Gas: Centrifugal Compressors: In refineries or liquefied natural gas (LNG) plants, monitoring the clearance safety between the impeller and casing under high-speed, high-pressure conditions.

Gas Pipeline Pumping Stations: In remote monitoring scenarios, providing continuous signal input to ensure the safe operation of unattended equipment.

Petrochemical Industry: Used in large reactor drive pumps or blowers, especially in plants involving high-temperature processes, ensuring that mechanical seals and internal components do not fail due to thermal deformation.

Specifications

Competitive Advantage

Competitive Advantage Dual-Channel Monitoring with Quantified Data
The 81544-01 provides two simultaneous channels, capturing rotor expansion from 0–10 mm with ±0.01 mm accuracy, enabling automated systems to calculate differential expansion magnitude and direction in real time.

Competitive Advantage Precise Alarm Control
With 2 over and 2 under alarm setpoints per channel, the 81544-01 supports threshold settings in millimeter increments, allowing automated process systems to trigger alerts accurately based on rotor axial displacement.

Competitive Advantage Compact Integration and High Signal Fidelity
The 81544-01, at 5 × 9.8 × 22.8 cm and 0.26 kg, integrates easily into automation racks. Its 10 kΩ input impedance and two-channel signal capture deliver precise data for continuous monitoring, reducing manual inspection and supporting automated maintenance decisions.