Product Introduction

The Bently Nevada 3500/50 134938‑01 Tachometer Module is a precision signal acquisition module designed to measure shaft speed and provide a reliable phase reference for machinery protection systems. Its compact size, industrial‑grade construction, and seamless system integration make it ideal for industrial monitoring applications where accuracy and uptime are critical. Whether deployed in power generation or heavy industry, this tachometer module enhances the fidelity of rotational data feeding into broader protective logic and condition monitoring.

Technical Specifications

Specification	Description
Product Type	Tachometer Module
Model	3500/50
Part Number	134938‑01
Function	Shaft speed and phase reference signal acquisition
Application	Rotating machinery monitoring and protection
Manufacturer	Bently Nevada
Installation	3500 Series rack mounting
Dimensions	241.3 × 24.4 × 241.8 mm
Weight	0.82 kg

Recommended Related Models

Bently Nevada 3500/50 I/O Modules – Interface additional sensor signals
Bently Nevada 3500/50 Preamplifier Modules – Enhanced signal conditioning
Bently Nevada 3500/40 Enhanced Key Phase Modules – Phase reference solutions
Bently Nevada 3300 XL Probes – Proximity and speed sensors

Popular Related Models

Bently Nevada 3500/50 Tachometer Modules (various part numbers)
Bently Nevada 3500/50 I/O Modules with External Terminals
Bently Nevada Keyphasor Signal Modules
Bently Nevada 3300 XL Vibration & Proximity Probes

Application Scenarios

The Bently Nevada 3500/50 134938‑01 Tachometer Module is engineered for highly accurate rotational speed and phase reference signal acquisition in industrial machinery monitoring systems. It is typically used in:

Rotating equipment speed measurement for turbines, compressors, and generators
Phase and speed reference capture for machinery protection and control
Integration with 3500 Series monitoring racks and processors
Condition‑based and predictive maintenance platforms
High‑speed or safety‑critical applications requiring robust tachometer signals

Key Advantages

This tachometer module delivers dependable performance with strong signal integrity:

Precise rotational speed measurement improves machinery protection accuracy
Designed for 3500 Series integration with consistent mechanical and electrical fit
High‑reliability performance suitable for continuous 24/7 operation
Compact and rugged construction ideal for industrial environments
Improves phase reference quality for other protection and monitoring logic

Technical FAQs

What is the main function of this module?
It captures and conditions tachometer (speed) signals for machinery monitoring systems.
Which machinery typically uses it?
Turbines, generators, compressors, and other rotating industrial equipment.
Is it compatible with 3500 Series monitoring systems?
Yes — it integrates seamlessly into 3500/50 and general 3500 Series racks.
Can it operate continuously?
Yes — engineered for 24/7 industrial duty cycles.
Does it provide phase reference signals?
Yes — tachometer output is often used as a phase reference for protection logic.
Is this module suitable for high‑speed rotation?
Yes — it captures fast changes accurately.
Does installation require special tools?
No — standard rack mounting and terminations apply.
Does it require frequent maintenance?
No — periodic checks during routine maintenance are sufficient.
Is it robust enough for harsh industrial environments?
Yes — built to withstand demanding mechanical and electrical conditions.
Why choose an original Bently Nevada tachometer module?
To ensure signal accuracy, system compatibility, and long‑term reliability.