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Bently Nevada 3500/50 Tachometer Module Ready For Ship

Bently Nevada 3500/50 Tachometer Module Ready For Ship

Product Name:Tachometer Module

Brand Name:Bently Nevada

Model Number:3500/50

Country of Origin:USA

Warranty:12 Months

Whatsapp：+86 18159889985

Email：[email protected]

Appurtenance:

Overview
Contact for quotation
Specifications
Description
Applications
Features
Functions
FAQ
Spares
Recommended Products

Overview

Brand Name:	Bently Nevada
Model Number:	3500/50
Country of Origin:	USA
Packaging Details:	Original new Factory Sealed
Delivery Time:	in stock
Payment Terms:	T/T

Contact for quotation

Sales Manager:	Stella
Send an email:	[email protected]
Contact in Whatsapp:	+86 18159889985

Specifications

Parameter	Specification
Product Model	3500/50 Tachometer Module
Monitoring Channels	2 Channels
Input Signal Type	Accepts proximity probe and magnetic pickup signals
Input Signal Range	+10 VDC to -24 VDC
Input Impedance	20 kΩ standard, 40 kΩ TMR, 7.15 kΩ internal barrier
Power Consumption	5.8 W typical
Maximum Input Frequency	20 kHz
Speed Measurement Range	Up to 99,999 RPM
RPM Accuracy	±0.1 RPM (<100 RPM), ±1 RPM (100-10,000 RPM)
Recorder Output	4-20 mA proportional output
Operating Temperature	-30°C to +65°C
Storage Temperature	-40°C to +85°C
Humidity	95% non-condensing
Monitor Dimensions	241.3 × 24.4 × 241.8 mm
I/O Module Dimensions	241.3 × 24.4 × 99.1 mm
Monitor Weight	0.82 kg
I/O Module Weight	0.20 kg

Description

Bently Nevada 3500/50 is a high-performance tachometer monitoring module designed for critical rotating machinery applications within the 3500 Machinery Protection System. Supporting inputs from proximity probes and magnetic pickups, the module continuously measures shaft speed, rotor acceleration, and rotational direction while providing real-time alarm processing for enhanced equipment protection. 3500/50 integrates seamlessly with other 3500 Series monitors, improving overall system reliability and operational visibility.

Engineered for demanding industrial environments, 3500/50 offers flexible configuration options including speed monitoring, zero-speed detection, reverse rotation indication, and rotor acceleration alarming. The module can also distribute conditioned Keyphasor® signals across the rack backplane, eliminating the need for an additional dedicated Keyphasor module in many applications.

With advanced signal conditioning, programmable alarm thresholds, peak value storage, and robust communication capabilities, 3500/50 helps maintenance and operations teams detect abnormal machine behavior early, minimize unplanned downtime, and optimize asset performance in turbines, compressors, pumps, and other critical rotating equipment.

Applications

Power Plants: Used for steam turbine, gas turbine, and generator speed monitoring, ensuring reliable machinery protection and operational safety.
Oil & Gas Facilities: Monitors compressor trains, pumps, and critical rotating assets, supporting predictive maintenance strategies.
Chemical Plants: Provides rotor speed supervision for process-critical equipment, improving production reliability and safety.
Steel Mills (Metallurgical Plants): Tracks rotational speed and acceleration of rolling mill drives operating in harsh industrial environments.
Machinery Manufacturing Plants: Applied in test benches, automated production equipment, and rotating machinery validation systems.
Mining Operations: Supports condition monitoring of crushers, conveyors, and heavy rotating equipment.
Marine Industry: Protects propulsion systems and auxiliary rotating machinery aboard ships and offshore platforms.

Features

Dual-channel tachometer monitoring for critical rotating machinery.
Supports proximity probes and magnetic pickup transducers.
Integrated Keyphasor® signal distribution across the 3500 rack.
Programmable speed, acceleration, and reverse rotation alarms.
Peak speed and peak reverse speed recording capability.
High-accuracy RPM measurement up to 99,999 RPM.
4–20 mA recorder outputs for external monitoring systems.
Compatible with standard, TMR, and internal barrier I/O modules.

Functions

Speed Monitoring: Continuously measures shaft rotational speed for machinery protection.
Speed Band Detection: Identifies operation within defined speed ranges.
Zero Speed Monitoring: Detects machine stoppage conditions and generates notifications.
Rotor Acceleration Monitoring: Tracks acceleration and deceleration rates during startup and shutdown.
Reverse Rotation Detection: Monitors shaft direction and records reverse rotation events.
Alarm Management: Compares measured values against configurable alarm thresholds.
Data Logging Support: Provides proportional outputs for SCADA and maintenance systems.

FAQ

Q1: What types of machinery can the 3500/50 Tachometer Module monitor?
A1: The 3500/50 is designed for turbines, compressors, pumps, motors, generators, and other critical rotating equipment requiring accurate speed supervision.

Q2: How many input channels are available on the 3500/50 module?
A2: The module provides two independent monitoring channels, allowing simultaneous measurement of multiple rotational parameters.

Q3: Can the 3500/50 monitor rotor acceleration during startup and shutdown?
A3: Yes, the module calculates rotor acceleration and deceleration rates, helping operators evaluate machine performance during transient conditions.

Q4: Does the 3500/50 support configurable alarm thresholds?
A4: Yes, users can configure multiple alarm setpoints and delay times through the 3500 Rack Configuration Software to meet specific protection requirements.

Q5: What benefits does the integrated Keyphasor® signal capability provide?
A5: The integrated Keyphasor® functionality allows conditioned speed reference signals to be shared across the 3500 rack, reducing hardware requirements and simplifying system architecture.

Spares

135489-04	Relay output module, version 4
135613-01	Signal interface expansion card
135813-01	Motor control interface module
136188-01	Process monitoring relay board
136188-02	Process monitoring relay board, v2
136703-01	Digital I/O signal module
136711-01	Safety control relay card
136711-02	Safety control relay card, v2
136719-01	Digital I/O control module
138708-01	Analog signal interface card
139554-01	Process monitoring expansion unit
140471-01	Relay output control module
140471-02	Relay output control module, upgraded
140482-01	Motor driver interface board
143493-00-080-040-50-00	High-precision sensor interface unit
143729-01	Safety relay control module
146031-01	Digital control expansion board
146031-02	Digital control expansion board, upgraded