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- Bently Nevada
- 991-06-50-01-05
- Vibration Transmitter
- USA
- 112 × 38 mm
- 0.45kg
- Xiamen, China
- New & In Stock
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Bently Nevada 991-06-50-01-05
Comprehensive Product Overview, Technical Specifications, Product Applications, Advantages, Series Information, and Recommended Models
Product Overview
The Bently Nevada 991-06-50-01-05 is a compact industrial vibration transmitter designed for continuous online monitoring of rotating machinery. It belongs to the 991 Series, which is developed for permanent installation on industrial equipment requiring reliable vibration measurement, stable signal transmission, and long-term operational performance.
The transmitter is designed to measure overall machine casing vibration and convert the detected vibration signal into a standard 4–20 mA analog current output. This output format allows direct connection with industrial automation systems such as PLC, DCS, SCADA, machinery monitoring systems, and other control platforms.
The 991-06-50-01-05 integrates vibration sensing, electronic signal conditioning, and output conversion functions into one compact device. This integrated design simplifies installation, reduces additional hardware requirements, and improves measurement reliability during continuous operation.
The transmitter is mainly installed on rotating machinery including motors, pumps, compressors, fans, blowers, turbines, and gearboxes. By continuously collecting vibration information, it provides important data for evaluating equipment operating conditions and identifying potential mechanical issues at an early stage.
Compared with traditional periodic inspection methods, continuous vibration monitoring allows maintenance personnel to observe equipment health trends in real time. Changes in vibration levels can indicate developing problems such as bearing wear, rotor imbalance, shaft misalignment, mechanical looseness, coupling damage, and structural vibration.
The compact structure of the transmitter allows installation in areas where space is limited. Its industrial-grade housing provides reliable protection against vibration, dust, moisture, oil contamination, temperature changes, and electrical interference.
The 991-06-50-01-05 is especially suitable for predictive maintenance programs because it provides continuous machine condition information, allowing maintenance activities to be planned according to actual equipment status instead of fixed schedules.
By improving fault detection capability, reducing unexpected shutdowns, and extending machinery service life, this transmitter helps improve operational reliability and maintenance efficiency in many industrial environments.
Brand Information
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product Category | Industrial Vibration Transmitter |
| Product Type | Permanent Machinery Condition Monitoring Device |
| Product Series | 991 Series |
| Monitoring Method | Continuous Online Vibration Monitoring |
| Output Signal | 4–20 mA Analog Current Output |
| Installation Method | Direct Machine Mounting |
| Main Measurement Object | Machine Housing Vibration |
| Application Type | Predictive Maintenance and Equipment Monitoring |
Product Series
The 991 Series is a family of compact vibration transmitters designed for continuous monitoring of industrial rotating machinery.
The series provides a simplified solution for applications where reliable vibration measurement is required without complex monitoring equipment. Each transmitter combines vibration sensing and signal processing functions into a single compact housing, allowing easy installation and direct connection with industrial control systems.
The main purpose of the 991 Series is to provide continuous information about machine operating condition, allowing operators and maintenance teams to detect abnormal vibration behavior before serious equipment damage occurs.
The series features:
- Permanent vibration monitoring
- Compact industrial construction
- Integrated signal conditioning
- Standard 4–20 mA output
- Reliable long-term measurement stability
- Strong resistance to industrial environments
- Simple installation process
- Low maintenance requirements
- Compatibility with common automation systems
Typical monitored equipment includes:
- Centrifugal pumps
- Process pumps
- Electric motors
- Cooling water pumps
- Compressors
- Fans
- Blowers
- Gearboxes
- Turbines
- Cooling tower drives
- Manufacturing machinery
- Mining equipment
- Marine auxiliary systems
- Chemical processing equipment
The 991 Series is widely used in industries where equipment availability and operational reliability are critical.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 991-06-50-01-05 |
| Product Type | Industrial Vibration Transmitter |
| Product Series | 991 Series |
| Measurement Principle | Velocity-Based Housing Vibration Measurement |
| Monitoring Mode | Continuous Online Monitoring |
| Output Signal | 4–20 mA Analog Current |
| Power Supply | 24 VDC Typical |
| Measurement Direction | Radial |
| Frequency Response | Approximately 10 Hz to 1000 Hz |
| Measurement Range | Industrial Rotating Machinery Vibration Monitoring |
| Accuracy | ±2% Full Scale (Typical) |
| Signal Conditioning | Integrated Electronic Processing |
| Response Time | Fast Dynamic Response |
| Output Characteristics | Linear Current Output |
| Mounting Method | Stud Mount Installation |
| Electrical Connection | Industrial Connector |
| Housing Material | Stainless Steel |
| Protection Rating | IP65 (Typical) |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -55°C to +100°C |
| Electromagnetic Compatibility | Industrial EMC Protection |
| Signal Stability | High Long-Term Stability |
| Maintenance Requirement | Low Maintenance |
| Service Life | Continuous Industrial Operation |
| Dimensions | Approximately 112 × 38 mm |
| Weight (kg) | Approximately 0.45 kg |
Product Features
The 991-06-50-01-05 is designed as a permanent vibration monitoring solution for industrial rotating machinery. Its compact structure allows direct installation on machine surfaces while maintaining reliable vibration measurement performance.
The transmitter combines sensing and signal processing electronics into a single enclosure, eliminating the need for separate vibration converters or additional processing equipment.
The standard 4–20 mA output makes the device compatible with a wide range of industrial automation systems. It can easily transmit vibration information to monitoring systems for display, analysis, alarm processing, and maintenance decision-making.
The transmitter uses a durable industrial housing designed to withstand harsh operating environments. The enclosure provides protection against mechanical vibration, dust, humidity, oil contamination, and temperature fluctuations.
The integrated electronic design improves signal stability and reduces interference caused by nearby electrical equipment such as motors, generators, transformers, and variable frequency drives.
The compact dimensions allow flexible installation on different types of machinery, including equipment where mounting space is restricted.
The transmitter is optimized for long-term continuous operation and requires minimal maintenance, making it suitable for critical equipment operating continuously in industrial facilities.
Product Advantages
Continuous Equipment Monitoring
The transmitter provides continuous vibration information during machine operation, allowing maintenance personnel to monitor equipment condition without stopping production.
Early Mechanical Fault Detection
Continuous vibration measurement helps identify developing mechanical problems before they become serious failures.
Typical detectable conditions include:
- Bearing degradation
- Rotor imbalance
- Shaft misalignment
- Mechanical looseness
- Coupling faults
- Abnormal vibration patterns
- Structural resonance
High Industrial Reliability
The rugged construction allows stable operation under difficult industrial conditions, including high vibration environments, temperature changes, humidity, dust, and electrical interference.
Easy Integration
The 4–20 mA output provides simple connection with industrial control systems without requiring complicated communication equipment.
Compact Installation Design
The small housing allows installation directly on machinery with limited available space.
Reduced Maintenance Requirements
The integrated design reduces the number of external components and simplifies maintenance activities.
Improved Predictive Maintenance Capability
The transmitter provides continuous machine condition information, helping maintenance teams move from scheduled maintenance toward condition-based maintenance.
Extended Equipment Service Life
Early detection of abnormal vibration conditions allows corrective action before severe mechanical damage occurs, improving equipment reliability and extending operating life.
Product Applications
The 991-06-50-01-05 is suitable for a wide range of industrial applications requiring continuous monitoring of rotating machinery.
Pump Monitoring Applications
Used for monitoring:
- Centrifugal pumps
- Process pumps
- Cooling water pumps
- Feed pumps
- Circulation pumps
- Industrial transfer pumps
Motor Monitoring Applications
Suitable for:
- Large electric motors
- Drive motors
- Pump motors
- Fan motors
- Auxiliary motors
Compressor Applications
Common applications include:
- Air compressors
- Gas compressors
- Refrigeration compressors
- Process compressors
Turbine Applications
Suitable for:
- Steam turbines
- Gas turbines
- Auxiliary turbine equipment
Industrial Machinery Applications
Applicable equipment includes:
- Gearboxes
- Fans
- Blowers
- Cooling tower systems
- Conveyors
- Crushers
- Mining machinery
- Chemical processing equipment
- Marine rotating equipment
- Manufacturing production equipment
Recommended Models from the Same Series or Related Series
| Model | Product Type | Output Signal | Power Supply | Frequency Response | Dimensions | Weight (kg) |
|---|---|---|---|---|---|---|
| 991-06-50-01-00 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-06-50-01-01 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-01-XX-01-05 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-05-70-01-01 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-25-50-01-00 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
Popular Models from the Same Brand
| Model | Product Type | Main Function | Typical Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor System | Shaft Displacement and Vibration Monitoring | Turbines, Compressors, Motors | Approx. 120 × 45 mm | Approx. 0.60 kg |
| 330103-00-05-10-02-00 | Proximity Probe | Shaft Position Measurement | Rotating Machinery Protection | Approx. 110 × 25 mm | Approx. 0.30 kg |
| 3500/22M | Monitoring Interface Module | Machinery Data Collection | Online Monitoring Systems | Approx. 241 × 24 × 242 mm | Approx. 0.80 kg |
| 3500/42M | Machinery Monitoring Module | Vibration and Position Monitoring | Critical Rotating Equipment | Approx. 241 × 24 × 242 mm | Approx. 0.85 kg |
| 3500/40M | Monitoring Module | Shaft Position and Vibration Measurement | Industrial Machinery Protection | Approx. 241 × 24 × 242 mm | Approx. 0.82 kg |
Product Summary
The Bently Nevada 991-06-50-01-05 is a compact and reliable vibration transmitter designed for permanent installation on rotating machinery requiring continuous condition monitoring.
As part of the 991 Series, it provides a practical monitoring solution by combining vibration measurement, signal processing, and 4–20 mA analog transmission in a single industrial device.
The transmitter offers reliable performance, simple installation, low maintenance requirements, and excellent compatibility with industrial automation systems. Its rugged design allows operation in demanding environments where machinery reliability is essential.
By continuously monitoring vibration conditions, the transmitter helps identify early mechanical problems such as imbalance, bearing wear, misalignment, looseness, and abnormal vibration behavior.
The 991-06-50-01-05 supports predictive maintenance strategies by improving fault detection, reducing unexpected downtime, optimizing maintenance schedules, extending equipment service life, and improving overall industrial productivity.
It is suitable for applications across power generation, petrochemical processing, oil and gas, mining, metallurgy, water treatment, marine engineering, manufacturing, and other industries where reliable rotating machinery monitoring is required.