Compact Design with Integrated Signal Conditioning
The transmitter accepts vibration signals from a compatible 3300 NSv proximity probe, converts them into engineering units, and outputs a standard 4–20 mA signal for continuous machinery protection. Integrated Proximitor® electronics eliminate the need for an external signal conditioner, reducing cabinet space and wiring complexity.
A dedicated dynamic output is also available for waveform analysis, probe gap verification, and maintenance diagnostics without interrupting the process signal.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 990-04-XX-01-00 MOD 147202-01 |
| Product Type | 990 Vibration Transmitter |
| Measurement Range | 0–4 mils pp (0–100 μm pp) |
| Output Signal | 4–20 mA, Two-Wire Loop Powered |
| Compatible Probe | 3300 NSv Proximity Probe |
| System Length | XX (Configured 5 m or 7 m Transducer System) |
| Mounting Method | 35 mm DIN Rail Clips |
| Agency Approval | 00 – Standard Version (No Additional Approval) |
| Frequency Response | 5 Hz to 6 kHz |
| Supply Voltage | +12 to +35 VDC |
| Loop Accuracy | ±1.5% Full Scale |
| Diagnostic Output | Dynamic Proximitor® Output |
| Operating Temperature | -35°C to +85°C |
| Housing | Fully Potted Industrial Electronics |
| Approximate Dimensions | 100 × 73 × 60 mm |
| Approximate Weight | 0.46 kg |
Typical Applications
The 990-04-XX-01-00 MOD 147202-01 is suitable for continuous vibration monitoring across numerous industrial sectors.
| Industry | Typical Equipment |
|---|
| Oil & Gas | Centrifugal compressors, pumps |
| Power Generation | Steam turbines, generators |
| Petrochemical | Process compressors and motors |
| Water Treatment | High-capacity pumping systems |
| Manufacturing | Fans, blowers, electric motors |
| OEM Machinery | Compressor and pump packages |
Typical applications include:
-
Shaft vibration monitoring
-
Continuous equipment protection
-
Predictive maintenance
-
Machinery health diagnostics
-
PLC and DCS integration
-
Process alarm systems
Product Advantages
Integrated Proximitor® Electronics
The transmitter incorporates internal signal conditioning, eliminating the need for a separate Proximitor® module and reducing overall installation costs.
Flexible System Length
The XX configuration allows selection of the correct calibrated transducer system length (typically 5 m or 7 m) to match the installed probe and extension cable.
Standard Industrial Output
The 4–20 mA analog output is compatible with virtually all industrial automation platforms, enabling easy integration into existing monitoring systems.
Built-In Diagnostic Capability
Dedicated diagnostic terminals provide access to raw vibration and gap voltage signals, simplifying commissioning, calibration, and troubleshooting.
Reliable Industrial Construction
Fully encapsulated electronics provide resistance to moisture, vibration, and harsh environmental conditions, supporting long-term dependable operation.
Technical FAQs
1. What is the Bently Nevada 990-04-XX-01-00 MOD 147202-01 used for?
It converts shaft vibration from a compatible proximity probe into a 4–20 mA process signal for machinery monitoring and protection.
2. What does the "04" option represent?
It specifies a 0–4 mils peak-to-peak (0–100 μm pp) full-scale vibration range.
3. What does "XX" mean in the model number?
The XX indicates the configured transducer system length, typically 5 m or 7 m, depending on the installed probe and extension cable.
4. What does the "01" option specify?
It designates 35 mm DIN rail mounting for installation inside industrial control cabinets.
5. What does the "00" approval option indicate?
It identifies the standard configuration without additional hazardous-area agency approvals.
6. Which proximity probe is compatible?
The transmitter is designed for use with a Bently Nevada 3300 NSv proximity probe and its matching extension cable.
7. What power supply is required?
The unit operates from a +12 to +35 VDC two-wire loop-powered supply.
8. Can it connect directly to PLC and DCS systems?
Yes. Its 4–20 mA output is designed specifically for direct integration with industrial automation systems.
9. Does it support maintenance diagnostics?
Yes. The transmitter includes a dynamic Proximitor® output for waveform analysis, probe gap verification, and troubleshooting.
10. Which machines commonly use this transmitter?
It is commonly installed on centrifugal compressors, pumps, motors, fans, blowers, and other rotating equipment requiring continuous vibration monitoring.
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