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Product Overview
The Bently Nevada 990-10-50-01-05 Vibration Transmitter is part of the 990 series—an industry-trusted line of compact, loop-powered devices designed to deliver continuous vibration monitoring in real-time. This model is specifically configured to convert the dynamic signal from an industrial-grade vibration sensor into a 4–20 mA output that corresponds to the measured vibration level. The output signal integrates easily with control systems like DCS, PLCs, and SCADA to enable trend analysis, fault detection, and preventive maintenance.
Engineered for harsh environments and non-critical machinery where full protection systems are not economically feasible, the 990-10-50-01-05 offers a rugged, reliable, and cost-effective solution to ensure early detection of mechanical problems.
Key Features
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Accepts input from standard IEPE accelerometers
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Provides industry-standard 4–20 mA output proportional to vibration level
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Ideal for general-purpose machinery monitoring applications
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Supports velocity measurement (RMS or Peak), configurable per application
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Designed for harsh industrial environments with IP65/NEMA 4X-rated enclosure
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Loop-powered two-wire design for simple installation
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Compact and lightweight form factor
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Factory-calibrated for specific vibration ranges
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Compatible with a wide variety of control and automation systems
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Optional intrinsic safety and hazardous area certifications
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Bently Nevada 990 Vibration Transmitter |
| Model Number | 990-10-50-01-05 |
| Input Type | IEPE-type accelerometer |
| Output Signal | 4–20 mA (loop-powered) |
| Measurement Parameter | Velocity (default); Acceleration (available on request) |
| Output Range | Factory-set (e.g., 0–25 mm/s RMS) |
| Frequency Response | 10 Hz – 1,000 Hz (nominal) |
| Accuracy | ±1% of full scale |
| Power Supply | 12–30 VDC (supplied via 4–20 mA loop) |
| Enclosure Material | Anodized aluminum or stainless steel (model dependent) |
| Environmental Rating | IP65 / NEMA 4X |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -50°C to +100°C |
| Certifications | CE, RoHS; ATEX/IECEx optional |
| Dimensions | 100.1 x 73.9 x 53.3mm |
| Weight | 0.43 kg |
Industry Applications
The 990-10-50-01-05 is suited for monitoring a wide variety of industrial rotating equipment, particularly in environments where early detection of failure is vital but space and cost are limiting factors:
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Oil & Gas: Compressors, pumps, motors, and fans in upstream and downstream operations
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Power Generation: Small to medium-sized motors, ID/FD fans, and feed pumps
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Chemical & Petrochemical: Continuous monitoring of rotating process equipment
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Water & Wastewater: Blowers, lift station motors, and pumps
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Food & Beverage: Monitoring of motors and mixers under hygienic enclosures
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Metals & Mining: Screens, crushers, conveyors, and gearboxes
Product Advantages
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Simplified Monitoring: Converts vibration data to 4–20 mA for easy interpretation
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Compact & Robust: Withstands harsh conditions while minimizing space usage
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Reduced Downtime: Enables early detection of imbalance, misalignment, and bearing wear
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Maintenance-Friendly: No need for complex wiring or configuration during installation
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Wide Compatibility: Integrates easily into existing control infrastructure
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Certifiable for Hazardous Zones: Available in models certified for explosive atmospheres
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Cost-Efficient: Ideal solution for non-critical assets that still need regular monitoring
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Pre-Configured & Ready to Use: Shipped factory-calibrated, reducing commissioning time
Frequently Asked Questions (FAQ)
1. What does the 990-10-50-01-05 transmitter measure?
It measures vibration levels—typically in velocity units (e.g., mm/s RMS) using input from an accelerometer.
2. What type of sensors is this compatible with?
It supports standard IEPE-type accelerometers.
3. How is the device powered?
It is powered through the 4–20 mA current loop (12–30 VDC).
4. What is the signal output type?
A 4–20 mA analog signal proportional to vibration level.
5. Can it be mounted directly on equipment?
Yes, it’s designed for field mounting near or on rotating machinery.
6. Does it require calibration?
It is factory-calibrated. No field calibration is typically required under normal conditions.
7. Is it suitable for hazardous environments?
Yes, certified versions are available for use in ATEX/IECEx Zone 1 and Zone 2 locations.
8. How accurate is the output?
It provides ±1% full-scale accuracy.
9. Can the output range be customized?
Yes, the transmitter can be configured with a custom measurement range at the time of order.
10. What systems can this be integrated with?
It integrates with any industrial system that accepts 4–20 mA inputs, including DCS, PLC, and SCADA.
Related Models in the Same Series
| Model | Description |
|---|---|
| 990-04-XX-01 | General-purpose vibration transmitter for standard applications |
| 990-05-70-02-01 | Explosion-proof transmitter with stainless steel housing |
| 990-04-XX-02 | Transmitter with extended frequency range |
| 991-01-XX-01 | DIN-rail version of vibration transmitter for panel mounting |
| 990-TEMP-XX-01 | Integrated temperature and vibration monitoring transmitter |
| 990-PR-XX-01 | Dual-signal transmitter for pressure and vibration |
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