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Phone: +86 16626708626Description
3. Key Technical Specifications
- Transducer Inputs: 4 channels (supports accelerometers, velocity sensors, proximity)
- Temperature Inputs: 4 channels
- Relay Outputs: 6 configurable relays
- Recorder Outputs: 4 x 4-20 mA
- Buffered Output: 1 dedicated
- Power Supply: 18–36 V DC (common option) or AC variants
- Communications: Modbus via Ethernet or RS232/485 serial
- A/D Conversion: 24-bit
- Operating Temperature: -30°C to +65°C (typical)
- Mounting: Panel or DIN rail options
- Display: Attached or remote options available
- Alarms: Two levels per channel
4. Product Introduction
The Bently Nevada 1900/65A is a compact general purpose equipment monitor that provides continuous monitoring and protection for a wide range of machinery. It accepts four transducer inputs for vibration or position plus four temperature inputs.
Maintenance teams use it on auxiliary equipment, pumps, fans, and smaller critical assets where a full 3500 rack is overkill. It delivers relay outputs for shutdowns, 4-20 mA signals for trending, and Modbus communications for integration with plant systems. In field installations, the 1900/65A gives reliable local protection with straightforward configuration.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No power or display | Input voltage missing | High | Measure voltage at power terminals (18–36 V DC) | Verify supply and fuses before replacement |
| Channel not reading | Sensor wiring or configuration error | High | Check gap voltage or sensor output with multimeter | Confirm input type in software matches connected sensor |
| Relay not activating | Alarm setpoint or logic not set | Medium | Review configuration via software | Adjust setpoints; test relay manually if safe |
| Modbus comms failure | Network or address mismatch | Medium | Ping unit IP; check serial settings | Verify cable, baud rate, and slave address |
| Erratic readings | Ground loop or EMI | Low | Check shielding and isolate grounds | Improve wiring practices per manual |
If problems continue after basic checks, send diagnostic logs, photos of wiring, and software configuration export to technical support.
- 1900/65A
- 1900/65A
6. Frequently Asked Questions (FAQ)
How many sensors can the 1900/65A handle? Four transducer inputs plus four temperature inputs. Each transducer channel supports accelerometers, velocity sensors, or proximity probes.
Does it support hot-swapping? No. Shut down power before swapping modules or making major wiring changes.
What power options exist? Common is 18–36 V DC. Other AC versions are available depending on the exact model suffix—confirm your part number.
Can it replace an older monitor on my machine? Yes in many cases, but verify sensor compatibility and output mappings. The software makes reconfiguration fairly straightforward.
Is this New Surplus? New Original / New Surplus with full testing. These units come from reliable OEM channels and perform identically to current production.
How do I configure alarms and outputs? Use the 1900 Configuration Software. It lets you set scale factors, alarm levels, relay logic, and Modbus registers without special programming skills.
What about lead time and warranty? 1-year warranty. Many 1900/65A configurations ship quickly from stock—contact us with your full model string for exact availability.
