Industrial Applications
The 990-04-90-01-05 is designed for continuous vibration monitoring of critical rotating machinery in a wide variety of industries.
| Industry | Typical Equipment |
|---|
| Oil & Gas | Compressors, process pumps |
| Power Generation | Steam turbines, generators |
| Petrochemical | Rotating process equipment |
| Manufacturing | Motors, blowers, fans |
| Water & Utilities | Pumping stations |
| OEM Equipment | Compressor and pump packages |
Typical monitoring applications include:
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Shaft vibration monitoring
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Continuous machinery protection
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Predictive maintenance
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Equipment condition trending
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PLC/DCS vibration input
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Alarm and shutdown systems
Product Advantages
Integrated Proximitor® Electronics
The transmitter combines signal conditioning and vibration conversion into a single compact device, reducing installation costs and simplifying system design.
Standard 4–20 mA Output
The industry-standard analog signal enables seamless integration with modern automation platforms, supporting continuous monitoring and data logging.
9-Meter System Compatibility
Designed for use with 9-meter 3300 NSv transducer systems, this model provides additional installation flexibility where longer probe cable runs are required.
Hazardous Area Certification
The 05 approval option includes multiple hazardous-area certifications, allowing installation in regulated industrial environments that require internationally recognized compliance.
Rugged Industrial Construction
The fully potted housing protects internal electronics against vibration, moisture, and harsh operating conditions, supporting long service life and dependable performance.
Technical FAQs
1. What is the Bently Nevada 990-04-90-01-05 used for?
It converts shaft vibration from a compatible proximity probe into a 4–20 mA output for machinery monitoring and protection systems.
2. What does the "04" option indicate?
It specifies a 0–4 mils peak-to-peak (0–100 μm pp) vibration measurement range.
3. What does the "90" option represent?
It identifies compatibility with a 9-meter transducer system, including the probe and extension cable.
4. What does the "01" option specify?
It designates 35 mm DIN rail mounting for convenient installation inside industrial control cabinets.
5. What does the "05" approval option mean?
The 05 configuration includes Multiple Approvals, including CSA/NRTL/C and ATEX/IECEx hazardous-area certifications.
6. Which probe is compatible with this transmitter?
It is designed for use with a Bently Nevada 3300 NSv proximity probe and the corresponding extension cable.
7. What power supply is required?
The transmitter operates from a +12 to +35 VDC loop-powered supply.
8. Can it connect directly to a PLC or DCS?
Yes. The 4–20 mA output is designed for direct integration with PLC, DCS, and SCADA systems.
9. Does the transmitter provide a diagnostic signal?
Yes. It includes a dynamic Proximitor® output that allows waveform analysis and maintenance diagnostics without interrupting the process signal.
10. Which equipment commonly uses this transmitter?
It is widely installed on centrifugal compressors, pumps, motors, fans, and other rotating machinery requiring continuous vibration monitoring.
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