Upgrade Your Vibration Monitoring with Bently Nevada 990-04-50-03-CN
When unplanned machine downtime threatens production, the Bently Nevada 990-04-50-03-CN vibration transmitter delivers reliable, real-time shaft displacement data. This 990 Vibration Transmitter replaces older monitoring modules, offering improved accuracy and simpler integration. Designed for industrial automation, the 990-04-50-03-CN accepts a 3300 NSv proximity probe and outputs a 4-20 mA signal proportional to vibration.
Technical Specifications of 990-04-50-03-CN
- Full-Scale Option: 04 – 0-4 mils pp (0-100 μm pp)
- System Length: 5.0 metres (16.4 feet)
- Mounting: DIN clips and screws (Option 03)
- Input: One non-contacting 3300 NSv proximity probe plus extension cable
- Power: +12 to +35 Vdc at transmitter terminal
- Maximum Loop Resistance: 1,000 Ω including cable at 35 Vdc
- Current Limiting: 23 mA typical
- 4-20 mA loop accuracy: Within ±1.5% over full-scale range
- Frequency Response: 5 Hz to 6,000 Hz +0, 3 dB
- Weight: 0.43 kg (0.9 lbm)
Installation & Setup Guidance
Mount the 990-04-50-03-CN using DIN clips and screws (Option 03). Ensure probe gap is between 0.5 and 1.75 mm (20 to 55 mils) from target. The transmitter requires +12 to +35 Vdc input at the terminal. Connect a non-contacting 3300 NSv probe via extension cable; maximum leadwire length from Proximitor Sensor Output via BNC connector is 3 meters (10 feet).
Selection Guide & Purchasing Advice
Before ordering, verify that your system requires the CN agency approval option and 0-4 mils full-scale range. The 990-04-50-03-CN is a direct upgrade for older 990 series transmitters. For genuine Bently Nevada parts, trust PLC Source PRO (ubest101).
Troubleshooting & Common Issues
If signal output drops below 3.6 mA, the NOT OK/signal defeat circuit activates within 100 µs. Output restores automatically 2-3 seconds after condition clears. Check probe gap if measurement is off. For further diagnostics, consult the transmitter manual.