China Bently Nevada 133396-01 Overspeed Detection I/O Module for sale

Bently Nevada 133396-01 Overspeed Detection I/O Module

Price Negotiable

Price: 66USD

MOQ: 1

Delivery Time: 2-3 work days

Brand: Bently Nevada

Product Description

Bently Nevada 133396-01 Overspeed Detection I/O Module

Product Specifications

Category	Specification Details
Product Name	Overspeed Detection I/O Module
Part Number	133396-01
System Compatibility	Bently Nevada 3500 Series Machinery Protection System
Associated Front Cards	3500/53 Electronic Overspeed Detection System
Number of Channels	2 Independent Channels (Overspeed Detection)
Input Type	Proximity Transducers / Magnetic Pickups
Power Consumption	8.0 Watts (Typical)
Recorder Output	+4 to +20 mA (Proportional to Speed)
Input Impedance	20 kΩ (Standard)
Speed Range	Up to 100,000 RPM
Accuracy	Within ±0.1% of Full Scale
Voting Logic	Supports 2-out-of-2 or 2-out-of-3 configurations
Standard Compliance	API 670, API 612 (Machinery Protection Standards)
Operating Temp	-30°C to +65°C (-22°F to +149°F)
Storage Temp	-40°C to +85°C (-40°F to +185°F)
Humidity	95% Non-condensing
Mounting	Rear Rack Mount (Full-height)

For inquiries, please contact:

Contact: Miya Zheng

Email: sales@amikon.cn

WhatsApp: +86 180 2077 6792

Key Features

Overspeed protection role — very direct use case: The Bently Nevada 133396-01 is mainly used for overspeed protection in rotating machinery systems. In most setups, it works inside steam turbine overspeed protection, gas turbine safety system, or other critical asset protection applications where timing is important and response needs to be fast.
Voting logic — not just single-point decision: It supports voting logic configurations such as 2-out-of-2 and 2-out-of-3 (2oo3). This is usually applied in machinery protection relay schemes to reduce false trips while still keeping system integrity. In real projects, this kind of redundancy is quite common in emergency shutdown system (ESD) designs.
Sensor flexibility — not locked to one type: On the input side, it is not limited to one signal type. The module can work with magnetic pickup signals as well as Proximitor sensors. Because of this, it is often used in tachometer signal conditioning, frequency input module applications, and high-speed shaft monitoring setups.
Industry compliance — expected in turbine systems: From a standards point of view, it is typically installed in systems that follow API 670 and API 612 requirements. In many steam and gas turbine projects, this level of compliance is basically expected rather than optional.
Analog outputs — for downstream systems: For output, the module provides 4-20 mA recorder output on each channel. These signals are commonly sent to DCS, PLC, or other monitoring systems, especially in industrial compressor monitoring and power plant turbine control environments.
System integration — part of the 3500 ecosystem: Physically, it is designed to fit into the Bently Nevada 3500 rack as a rear-slot module. It works together with the 3500/53 front card and integrates through the overall 3500 system architecture, including TDI module integration and configuration tools.
ESD and protection timing — where it really matters: In actual operation, it plays a key role in overspeed detection. When used in emergency shutdown system (ESD) logic, it helps detect abnormal speed conditions within milliseconds, which is critical for protecting rotating machinery and avoiding serious equipment damage.

Applications

Steam and Gas Turbine Protection: In most power generation sites, the Bently Nevada 133396-01 is mainly seen in steam turbine and gas turbine protection systems. The idea is pretty direct — keep an eye on speed, and if it goes beyond safe limits, the turbine gets tripped before anything serious happens. It’s one of those layers that operators don’t interact with daily, but they really rely on when things go wrong.
Critical Centrifugal Compressor Monitoring: In oil & gas or petrochemical plants, it often shows up on centrifugal compressors. These machines run fast, and during process upsets or sudden load changes, overspeed can become a real risk. The module handles tachometer signal conditioning and helps prevent mechanical damage when conditions shift quickly.
Emergency Shutdown Systems (ESD): It also fits naturally into emergency shutdown system (ESD) architectures. With 2-out-of-3 (2oo3) voting logic, it’s commonly used where SIL-rated functions are required. In practice, this kind of setup is more about avoiding false trips while still keeping protection dependable enough for critical service.
API 670 Compliant Machinery Protection: For sites that follow API 670, this module is usually part of the standard machinery protection package. It doesn’t work alone, but it covers the speed-sensing part of the system where redundancy and accuracy really matter.
Industrial Rotating Machinery Safety: Beyond turbines and compressors, it also gets used on other rotating equipment — things like large industrial pumps, fans, and turboexpanders. Anywhere high-speed shafts are involved, and overspeed protection is needed, it tends to fit into the design.
Remote Speed Data Integration: On the data side, the module provides 4-20 mA recorder outputs, which makes it easy to send speed signals into DCS or PLC systems. In many plants, this is used for remote speed data integration, trending, or just central monitoring through the control system.

Bently Nevada 133396-01 technical diagram

Frequently Asked Questions

What is the main role of the 133396-01 in the system?

In the Bently Nevada 133396-01 setup, the main job is overspeed detection. It works with the 3500/53 monitor card and reacts when rotational speed becomes unsafe. In practice, it’s part of the layer that helps protect critical rotating equipment, especially where fast response is needed.
Does the 133396-01 work with other monitor modules?
Not really. This module is designed specifically for the Bently Nevada 3500/53 Overspeed Detection I/O Module. It’s not interchangeable with standard tachometer or proximity I/O modules in the 3500 rack. So in most cases, it stays within that dedicated overspeed configuration.
What sensors can be used with the 133396-01?

It supports both Passive Magnetic Pickups (MPUs) and Proximitor sensors.

That gives some flexibility in the field, since different turbine or compressor setups may use different speed measurement methods.
How does the 133396-01 support 2oo3 voting logic?

In real applications, multiple 133396-01 modules can be arranged in a redundant configuration. This allows 2-out-of-2 or 2-out-of-3 (2oo3) voting logic to be implemented.

The idea is fairly simple — reduce false trips, but still keep the protection reliable enough for critical machinery safety.
Is the 133396-01 compliant with API standards?

Yes, it’s typically used in systems that follow API 670 and API 612 requirements.

In turbine overspeed protection systems, this kind of compliance is basically expected, especially in power generation and oil & gas projects.
Can the 133396-01 send speed signals to external systems?

Yes. Each channel provides a 4-20 mA output, which can be sent to DCS or PLC systems.

This is often used for remote monitoring, trending, or integrating speed data into broader plant control systems.