Bently Nevada 990-05-XX-02-05 Vibration Transducer New
Manufacturer: Bently Nevada
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Part Number: 990-05-XX
Condition：New with Original Package
Product Type: Vibration Transmitters
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Bently Nevada 990-05-XX is a high-performance, 2-wire velocity transducer engineered for continuous casing vibration measurement on rotating machinery. It converts mechanical vibration directly into a proportional electrical signal, enabling real-time diagnostics for critical assets. This transmitter serves as a cornerstone for machinery protection programs, integrating seamlessly with Bently Nevada 3300 and 3500 monitoring systems. We provide this unit as 100% Brand New and Original, ensuring factory-spec accuracy for oil & gas, power generation, and chemical processing applications.
Part Number Breakdown: 990-05-XX
The "XX" suffix determines the specific sensitivity variant required for your machinery's vibration profile.
| Option (XX) | Sensitivity | Output Characteristic |
| 01 | 25 mV/in/sec | Standard range monitoring |
| 02 | 50 mV/in/sec | Enhanced resolution for mid-range velocity |
| 03 | 70 mV/in/sec | High sensitivity for low-vibration thresholds |
| 04 | 100 mV/in/sec | Maximum sensitivity for precision diagnostics |
Technical Specifications
| Parameter | Details |
| Measurement Type | Casing Vibration (Velocity) |
| Frequency Response | 10 Hz to 1,000 Hz |
| Dynamic Range | ±50 g peak |
| Output Signal | 2-wire voltage proportional to velocity |
| Housing Material | Stainless Steel |
| Mounting Thread | 3/8-24 UNF stud mount |
| Operating Temp | -30°C to +100°C (-22°F to +212°F) |
| Hazardous Area Ratings | ATEX, IECEx, CSA, UL |
Engineering Advantages
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Direct Casing Integration: The 990-05-XX mounts directly to the machine casing via a robust stud mount. This direct contact ensures the transducer captures high-frequency energy and transient vibrations that remote sensors often miss.
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Elimination of Signal Interference: The stainless steel housing and 2-wire architecture provide superior shielding against electromagnetic interference (EMI). This prevents "ghost" alarms in high-interference environments like pump rooms or turbine halls.
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Simplified Wiring Infrastructure: The 2-wire system reduces installation costs and complexity. It utilizes the same wires for power and signal transmission, making it an ideal choice for retrofitting older machinery where conduit space is limited.
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Harsh Environment Resilience: This transducer withstands extreme industrial conditions, including high humidity (up to 95% RH) and corrosive atmospheres. The hermetically sealed design prevents moisture ingress, ensuring long-term sensor stability and reducing maintenance intervals.
FAQs
Q: Can I connect the 990-05-XX directly to a PLC?
A: Yes. While optimized for Bently Nevada 3500 monitors, the 2-wire voltage output allows for direct integration with any standard PLC or DCS analog input card that supports the corresponding voltage range.
Q: Does the 990-05-XX require an external Proximitor?
A: No. Unlike proximity probes, the 990-05-XX is a self-contained velocity transducer. It generates its own signal based on mechanical motion and does not require an external driver to function.
Q: What are the primary indicators for replacing an existing vibration sensor with the 990 series?
A: Upgrade to the 990 series if your current sensors suffer from signal drift, frequent moisture-related failures, or if you require certified protection for hazardous (Ex) locations.
Q: How do I select the correct sensitivity (XX)?
A: Select the sensitivity based on your expected vibration levels. High-speed machinery typically requires lower sensitivity (25 mV/in/sec) to avoid signal clipping, while low-speed machinery benefits from higher sensitivity (100 mV/in/sec) to capture subtle fault frequencies.