Overview

The Bently Nevada 3300/50-01-02-03-02 Tachometer Monitor is designed for precise speed measurement and overspeed protection in rotating machinery such as turbines, compressors, and industrial motors. It continuously tracks rotor speed, zero-speed conditions, and acceleration to ensure machinery operates within safe limits.

Supporting multiple sensor types—TTL, magnetic pickups, and eddy-current proximity probes—this module offers flexible integration across diverse industrial environments. It is API 670 compliant, making it suitable for high-integrity protection systems in petrochemical and power generation facilities.

For example, in a steam turbine system, the 3300/50 monitor continuously checks shaft speed and initiates shutdown logic when overspeed thresholds are exceeded to prevent severe mechanical failures.

Technical Data

Typical Applications

• Turbine overspeed protection in power generation

• Rotor speed monitoring in compressors and expanders

• Zero-speed detection in motor control and safety interlocks

• API 670-compliant protection in petrochemical environments

• System 1 integration for real-time analytics and condition monitoring

Its strong compatibility with both legacy 3300 racks and modern condition monitoring solutions makes it a popular choice for equipment upgrades and new installations.

FAQ

Q: What sensor types are supported?
A: TTL signals, magnetic pickups, and eddy-current proximity probes.

Q: What is the frequency measurement range?
A: From 0 Hz up to 10 kHz.

Q: Does it meet API 670?
A: Yes, it is compliant with API 670 machinery protection requirements.

Q: Can it detect zero-speed conditions?
A: Yes, it provides accurate zero-speed protection for motors and turbines.

Q: What is the warranty period?
A: Standard 1-year manufacturer warranty.