Overview
The Bently Nevada 990 Vibration Transmitter (Part Number 990-05-50-01-CN) interfaces directly with centrifugal compressors, small motors, pumps, and fans. By converting proximity probe signals into a 4–20 mA output proportional to peak-to-peak vibration amplitude, it ensures smooth integration with machinery protection systems. Furthermore, the device simplifies vibration monitoring for OEMs requiring robust, fault-tolerant solutions.
Key Features
- Integrated Proximitor Sensor: This feature eliminates the need for external units, which simplifies installation and reduces wiring complexity.
- Diagnostic Outputs: In addition to standard signals, the module provides dynamic vibration and gap voltage outputs via “PROX OUT” and “COM” terminals.
- Adjustable Potentiometers: Zero and span adjustments allow precise tuning, improving measurement accuracy.
- Test Input Pin: You can verify the loop signal quickly using a function generator.
- Not OK/Signal Defeat Circuit: It actively prevents false alarms caused by faulty probes or loose connections.
- Flexible Mounting: You can mount the transmitter either on DIN rails or via bulkhead screws, depending on your setup.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 990-05-50-01-CN |
| Product Type | 990 Vibration Transmitter |
| Signal Output | 4–20 mA proportional to vibration amplitude |
| Input Sensor | 3300 NSv proximity probe |
| System Length Options | 5 m (50) or 7 m (70) |
| Full-Scale Option | 0–5 mils pp (0–100 µm pp) |
| Mounting Option | 35 mm DIN rail clips (01) |
| Operating Temperature | -35°C to +85°C (-31°F to +185°F) |
| Storage Temperature | -52°C to +100°C (-62°F to +212°F) |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Transducer Case Material | AISI 303 / 304 Stainless Steel |
| Weight | 0.43 kg (transmitter), 0.82 kg total including cable |
| Cable Type | 75Ω coaxial, FEP insulated |
| Optional Armor | Flexible AISI 302 SST with FEP outer jacket |
| Tensile Strength | 222 N (50 lbf) maximum from probe to lead |
Applications
- Industrial Machinery Monitoring: It actively provides vibration feedback for compressors, pumps, and motors.
- OEM Integration: Designed to integrate seamlessly into existing machinery protection systems.
- Fault Detection: Moreover, the Not OK/Signal Defeat circuit ensures reliable fault protection and minimizes false alarms.
FAQ
Q1: Is this Bently Nevada 990 transmitter original and new?
A1: Yes, the 990-05-50-01-CN is fully original and brand new, ready for immediate deployment.
Q2: What type of signal does this module provide?
A2: It produces a 4–20 mA output proportional to the vibration amplitude for easy integration.
Q3: Which sensors are compatible with this transmitter?
A3: You can connect it directly to 3300 NSv proximity probes and their extension cables.
Q4: What are the mounting options?
A4: The module supports 35 mm DIN rails or bulkhead screws, offering installation flexibility.
Q5: How quickly can it be shipped?
A5: We have stock available, so we typically dispatch orders within 3 days to 2 weeks via standard shipping such as DHL.
Details
| Weight | 0.82 kg |
|---|
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