Product Overview
The Bently Nevada 990-10-50-02-CN is a 990 Vibration Transmitter designed for continuous machine monitoring. This industrial automation module accepts one non-contacting 3300 NSv proximity probe and extension cable, converting vibration signals into a 4-20 mA output. Its robust design and failure-handling features make it essential for critical rotating equipment.
Technical Specifications
| Parameter |
Value |
| Full-scale Option |
0-10 mils pp (0-250 μm pp) |
| System Length |
5.0 meters (16.4 feet) |
| Mounting Option |
Bulkhead screws |
| Input |
1 non-contacting 3300 NSv probe and cable |
| Power |
+12 to +35 Vdc at transmitter terminal |
| Output |
4-20 mA over full-scale range |
| Loop Accuracy |
±1.5% (over 250 Ω load) |
| Maximum Loop Resistance |
1,000 Ω at 35 Vdc |
| Current Limiting |
23 mA typical |
| Frequency Response |
5 Hz to 6,000 Hz +0, -3 dB |
| Minimum Target Size |
9.5 mm (0.375 in) diameter |
| Weight |
0.43 kg (0.9 lbm) |
| Agency Approval |
CN country-specific |
Industry Applications
The Bently Nevada 990-10-50-02-CN is ideal for monitoring vibration in turbines, compressors, pumps, and fans. Its 4-20 mA output integrates directly with PLC and DCS systems for real-time data. The NOT OK signal defeat function (output drops below 3.6 mA within 100 µs) ensures immediate fault indication, reducing equipment damage risk.
Installation & Setup Guidance
Mount the transmitter using the bulkhead screws. Gap the probe between 0.5 and 1.75 mm from the target. Power the unit with +12 to +35 Vdc. Use the non-interacting zero and span adjustments for calibration. Maximum cable distance for the Proximitor sensor output is 3 meters. For hazardous areas (Zone 2/Div 2), limit power supply to 28 V.
Troubleshooting & Common Issues
The Bently Nevada 990-10-50-02-CN handles failure modes effectively. If the transmitter detects a fault (e.g., probe disconnect), it drives the output below 3.6 mA within 100 µs to signal the system. After the condition clears, output restores within 2-3 seconds. Verify probe gap and loop resistance (max 1,000 Ω) to prevent false triggers.
Buying Guide
When purchasing the Bently Nevada 990-10-50-02-CN, verify your full-scale range (0-10 mils) and system length (5 meters). Ensure compatibility with 3300 NSv probes. For reliable sourcing, contact PLC Source PRO (ubest101) for genuine parts and support.