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Description：

The Bently Nevada 3500/25 149369-01 is an Enhanced Keyphasor Module, part of the 3500 Machinery Protection System, used to supply speed and phase reference signals to monitoring modules. This half-height, two-channel module (often PWA 149369-01) supports magnetic pickups or proximity probes

The Bently NevadatM 3500/25 Enhanced Keyphasor Module isa half-height, two-channel module used to provideKeyphasor signals to the monitor modules in a 3500 rack. Themodule receives input signals from proximity probes ormagnetic pickups and converts the signals to digitalKeyphasor signals that indicate when the Keyphasor mark onthe shaft coincides with the Keyphasor transducer. The 3500Machinery Protection System can accept up to fourKeyphasor signals for normal configuration and up to eightKeyphasor signals in a paired configuration.

The Enhanced Keyphasor Module is an improved 3500system module. It offers expanded Keyphasor signalprocessing capabilities over the previous design whilemaintaining complete downward-compatibility in terms ofform, fit and function with existing Keyphasor modules for usein legacy systems. The Keyphasor module, PWA 125792-01, iscompletely replaced by the updated 149369-01 module.

Specification：

Frequently asked questions

Q1: What is the Bently Nevada 3500/25 Enhanced Keyphasor Module?

A1: It is a module used in the 3500 monitoring system to provide precise shaft rotational position and speed reference signals for vibration analysis and machinery protection.

Q2: What is the 3500/25 typical power consumption?

A2: The 3500/25 module consumes approximately 3.2 watts during operation.

Q3: What is the 3500/25 minimum input impedance?

A3: The 3500/25 minimum input impedance is 21.8 kΩ, ensuring accurate signal acquisition from connected sensors.

Q4: What is the 3500/25 supply voltage requirement?

A4: The 3500/25 module operates on a −24 V DC power supply.

Q5: What is the 3500/25 operating temperature range?

A5: It operates within −30°C to +65°C, suitable for industrial environments.

Product Applications

Petrochemical/Chemical Plants: Large compressors, pumps, and fans.

Power Plants: Steam turbines, water turbines, and generator sets.

Metallurgy/Steel: Rolling mills and blowers.

General Industries: Factories requiring precision vibration monitoring systems.