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- Bently Nevada
- 991-01-90-02-00
- Vibration Transmitter
- USA
- 120 × 80 × 55 mm
- 0.46kg
- Xiamen, China
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Bently Nevada 991-01-90-02-00
Comprehensive Product Introduction, Technical Specifications, Applications, Advantages, Series Information and Related Model Recommendations
Product Introduction
The Bently Nevada 991-01-90-02-00 is an industrial vibration transmitter designed for monitoring the operating condition of rotating machinery. It belongs to the 991 Vibration Transmitter Series, a product family developed for continuous vibration measurement, machinery condition monitoring, and predictive maintenance applications.
The transmitter provides a practical and reliable method for monitoring rotating equipment by receiving vibration signals from compatible sensors, processing the collected data, and converting the measurement information into a standardized industrial output signal.
The 991-01-90-02-00 is designed for applications where machinery reliability, operational stability, and early fault detection are important requirements.
Rotating machinery naturally produces vibration during operation. Under normal operating conditions, vibration remains within an acceptable range. However, increases in vibration level or changes in vibration characteristics may indicate developing mechanical problems.
By continuously monitoring vibration conditions, this transmitter helps maintenance personnel identify potential equipment issues before they become serious failures.
Typical monitored conditions include:
- Rotor imbalance
- Shaft misalignment
- Bearing deterioration
- Mechanical looseness
- Coupling wear
- Excessive vibration
- Abnormal machine loading
- Changes in operating performance
The transmitter receives vibration signals from monitoring sensors and converts the measured information into a stable industrial output signal suitable for connection with monitoring and control systems.
The compact design allows installation close to rotating machinery, improving measurement reliability and simplifying system integration.
The 991-01-90-02-00 is suitable for industries requiring dependable vibration monitoring, continuous equipment condition evaluation, and long-term machinery protection.
Brand Information
Brand: Bently Nevada
Bently Nevada is an industrial monitoring brand specializing in rotating machinery monitoring, vibration measurement, equipment protection, and condition monitoring technologies.
The brand focuses on improving machinery reliability through continuous monitoring solutions and supporting predictive maintenance strategies.
Main characteristics include:
- Reliable vibration measurement
- Accurate machinery condition assessment
- Stable industrial performance
- Long service life
- Strong environmental adaptability
- Continuous online monitoring capability
- Compatibility with industrial automation systems
The products are commonly applied in industries where rotating equipment reliability is critical for safe operation, production efficiency, and maintenance optimization.
Product Series
991 Vibration Transmitter Series
The 991 Vibration Transmitter Series is an industrial vibration monitoring product family designed for continuous monitoring of rotating equipment.
The series provides vibration measurement, signal processing, and industrial output conversion functions.
Compared with traditional manual inspection methods, the 991 Series provides continuous information about machine operating conditions, allowing users to identify abnormal vibration trends at an early stage.
The series is commonly used for:
- Rotating machinery condition monitoring
- Equipment health evaluation
- Predictive maintenance programs
- Machinery reliability improvement
- Industrial automation monitoring
Main characteristics include:
- Compact industrial structure
- Reliable signal processing
- Stable output performance
- Fast response capability
- Low maintenance requirements
- Easy field installation
- Long-term operational stability
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | Bently Nevada 991-01-90-02-00 |
| Product Type | Industrial Vibration Transmitter |
| Product Series | 991 Vibration Transmitter Series |
| Application | Rotating Machinery Condition Monitoring |
| Measurement Function | Vibration Monitoring and Signal Conversion |
| Monitoring Parameter | Machine Vibration |
| Input Signal | Vibration Sensor Input |
| Output Signal | 4–20 mA Analog Output |
| Power Supply | 24 VDC Industrial Power Supply |
| Signal Transmission | Analog Current Loop |
| Installation Method | Field Mounted |
| Operating Mode | Continuous Online Monitoring |
| Sensor Compatibility | Industrial Vibration Monitoring Sensors |
| Housing Material | Industrial Metal Housing |
| Electrical Connection | Terminal Connection |
| Signal Processing | Internal Electronic Signal Conditioning |
| Environmental Capability | Industrial Field Environment |
| EMC Performance | High Electromagnetic Compatibility |
| Response Performance | Fast Dynamic Response |
| Operating Temperature | Industrial Standard Temperature Range |
| Storage Temperature | Industrial Storage Range |
| Maintenance Requirement | Low Maintenance Design |
| Protection Function | Machinery Vibration Monitoring |
| Dimensions | Approximately 120 × 80 × 55 mm |
| Weight | Approximately 0.46 kg |
Working Principle
The 991-01-90-02-00 operates by collecting vibration information generated by rotating machinery.
A vibration sensor installed on the equipment detects mechanical movement and transfers the vibration signal to the transmitter.
The transmitter processes the incoming signal through internal electronic circuits and converts the vibration information into a standardized output signal.
The operating process includes:
- Rotating equipment generates mechanical vibration.
- Sensors detect vibration changes.
- Vibration signals are transferred to the transmitter.
- Internal circuits process and condition the signal.
- A standard industrial output signal is generated.
- Monitoring systems evaluate equipment condition.
This operating method provides continuous information about machinery health and allows maintenance teams to detect abnormal operating conditions earlier.
Product Features
Compact Industrial Structure
The transmitter adopts a compact structure suitable for installation in industrial environments.
The compact design reduces installation space requirements and provides flexibility for different machinery monitoring applications.
Continuous Vibration Monitoring
The product provides continuous monitoring during normal equipment operation.
Continuous monitoring allows users to identify gradual vibration changes that may not be visible during periodic inspections.
Reliable Signal Output
The transmitter provides stable signal conversion and consistent output performance.
The standardized analog output allows easy connection with industrial monitoring systems.
Industrial Reliability
The product is designed for demanding industrial applications.
It can maintain stable performance under conditions including:
- Mechanical vibration
- Electrical interference
- Temperature changes
- Long operating periods
Easy Integration
The transmitter can be integrated into:
- PLC systems
- DCS systems
- SCADA systems
- Industrial monitoring platforms
- Data acquisition systems
Predictive Maintenance Support
The transmitter provides important vibration information for predictive maintenance.
By analyzing vibration trends, users can:
- Detect developing faults
- Schedule maintenance activities
- Reduce unexpected downtime
- Improve equipment availability
- Extend machinery service life
Low Maintenance Operation
The product requires limited maintenance after installation.
The reliable design supports long-term industrial operation with reduced service requirements.
Product Applications
Compressor Monitoring
The transmitter is suitable for industrial compressor monitoring.
Typical applications include:
- Centrifugal compressors
- Process compressors
- Gas compressors
- Industrial air compressors
It helps identify abnormal vibration conditions and improves compressor reliability.
Turbine Monitoring
Suitable applications include:
- Steam turbines
- Gas turbines
- Auxiliary turbine systems
The transmitter helps evaluate turbine vibration conditions and supports stable operation.
Pump Monitoring
Applications include:
- Centrifugal pumps
- Process pumps
- Water circulation pumps
- Industrial pumping equipment
Motor Monitoring
Suitable equipment includes:
- Large electric motors
- Motor-driven systems
- Industrial drive equipment
- Production machinery
Fan and Blower Monitoring
Applications include:
- Industrial fans
- Cooling systems
- Ventilation equipment
- Large blower units
Gearbox Monitoring
Applications include:
- Industrial gearboxes
- Speed reduction systems
- Mechanical transmission equipment
Industry Applications
| Industry | Typical Equipment |
|---|---|
| Power Generation | Turbines, generators, auxiliary rotating equipment |
| Oil and Gas | Compressors, pumps, process machinery |
| Petrochemical | Rotating production equipment |
| Manufacturing | Motors, production machinery, drive systems |
| Water Treatment | Pumps and circulation systems |
| Mining | Heavy rotating machinery |
| Cement Industry | Large rotating equipment |
| Marine Industry | Propulsion and auxiliary machinery |
Product Advantages
| Advantage | Description |
|---|---|
| High Reliability | Provides stable vibration monitoring during continuous operation |
| Accurate Measurement | Provides reliable machinery condition information |
| Compact Design | Requires limited installation space |
| Easy Installation | Simplifies field installation requirements |
| Stable Signal Transmission | Provides consistent analog output |
| Low Maintenance | Reduces maintenance workload |
| Strong Adaptability | Suitable for different industrial environments |
| Predictive Maintenance Support | Helps detect possible failures early |
| Wide Application Range | Suitable for many rotating machines |
| Long Service Life | Designed for extended industrial operation |
Recommended Models from the Same Series or Related Models
| Model | Product Type | Output Signal | Dimensions | Weight (kg) | Main Application |
|---|---|---|---|---|---|
| 991-01-90-02-00 | Vibration Transmitter | 4–20 mA | 120 × 80 × 55 mm | 0.46 kg | General vibration monitoring |
| 991-01-90-01-00 | Vibration Transmitter | 4–20 mA | 120 × 80 × 55 mm | 0.46 kg | Rotating machinery monitoring |
| 990-10-XX-01-00 | Vibration Transmitter | 4–20 mA | 120 × 80 × 55 mm | 0.46 kg | Machinery condition monitoring |
| 990-10-XX-02-00 | Vibration Transmitter | 4–20 mA | 120 × 80 × 55 mm | 0.46 kg | Industrial vibration monitoring |
| 990-12-XX-01-00 | Vibration Transmitter | 4–20 mA | 120 × 80 × 55 mm | 0.46 kg | Continuous equipment monitoring |
Recommended Popular Models from the Same Brand
| Model | Product Type | Series | Main Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 3500/42M | Proximitor Monitor Module | 3500 Series | Multi-channel vibration monitoring, alarm processing, machinery protection | 241 × 24 × 241 mm | 0.82 kg |
| 3500/22M | Communication Interface Module | 3500 Series | Machinery communication and monitoring integration | 241 × 24 × 241 mm | 0.80 kg |
| 3500/15 | Power Supply Module | 3500 Series | Industrial redundant power supply management | 241 × 24 × 241 mm | 0.76 kg |
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor | 3300 XL Series | Shaft displacement and vibration measurement | Ø8 mm × approximately 100 mm | 0.35 kg |
| 1900/65A | Machinery Condition Monitor | 1900 Series | Compact vibration monitoring, alarm functions and condition evaluation | 180 × 140 × 70 mm | 1.20 kg |
Maintenance Benefits
The 991-01-90-02-00 provides significant benefits for modern industrial maintenance management.
Traditional maintenance methods usually rely on scheduled inspections, but mechanical problems may develop between inspection periods.
Continuous vibration monitoring provides real-time equipment condition information and allows maintenance personnel to make better decisions.
The transmitter helps users:
- Detect mechanical problems earlier
- Reduce unexpected downtime
- Improve maintenance planning
- Increase equipment availability
- Reduce repair costs
- Extend machinery operating life
- Improve operational reliability
Continuous monitoring of vibration trends allows maintenance teams to identify developing problems and take corrective actions before major equipment failures occur.
Product Summary
The Bently Nevada 991-01-90-02-00 is an industrial vibration transmitter belonging to the 991 Vibration Transmitter Series.
It is designed for continuous monitoring of rotating machinery and provides reliable vibration measurement through standardized industrial output.
With advantages including compact structure, stable signal processing, accurate vibration monitoring, easy installation, strong environmental adaptability, and reliable system integration, the transmitter is suitable for compressors, turbines, pumps, motors, fans, gearboxes, and other critical rotating equipment.
The product supports predictive maintenance strategies by providing continuous machinery condition information, helping users improve equipment reliability, reduce downtime, optimize maintenance planning, and extend the operating life of industrial assets.