Description
Overview
The 1900/65A 01-01-03-00-01 from Bently Nevada is a compact vibration monitoring device engineered for continuous protection of small and auxiliary rotating machinery. It is designed as a standalone alternative to rack-based systems, providing essential monitoring, alarm logic, and output functions in a simplified hardware format.
This configuration is commonly applied where API 670–style protection is required without deploying a full-scale 3500 monitoring rack. It supports proximity probe-based displacement measurement along with relay-based protection and analog integration into plant control systems.
Typical installations include pumps, fans, compressors, blowers, and other general-purpose rotating assets.
Configuration Definition
The model code 01-01-03-00-01 defines the functional structure of the unit:
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Proximity probe input configured for shaft displacement measurement
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Standard vibration signal processing channel
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Dual relay output package (Alert + Danger)
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Standard isolated 4–20 mA analog output
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Universal AC/DC power input module
This combination provides a complete monitoring loop for single-channel machinery protection applications.
Technical Specifications
| Parameter |
Specification |
| Brand |
Bently Nevada |
| Model |
1900/65A 01-01-03-00-01 |
| Product Type |
Single-Channel Vibration Monitor |
| Monitoring Function |
Shaft Displacement (Proximity Probe Based) |
| Sensor Compatibility |
5 mm, 8 mm, 11 mm Proximity Probe Systems |
| Measurement Mode |
Overall Vibration / Displacement |
| Input Signal Range |
Approx. 0–200 µm peak-to-peak (system dependent) |
| Frequency Response |
3 Hz to 10 kHz (sensor dependent) |
| Buffered Output |
Front-panel BNC (raw signal access) |
| Alarm Levels |
Alert / Danger |
| Alarm Functionality |
Non-OK, vibration, system fault detection |
| Alarm Accuracy |
±1% of full scale |
| Alarm Delay |
Configurable |
| Alarm Latching |
Selectable |
| Relay Type |
2 × Form-C (SPDT) |
| Relay Ratings |
5 A @ 250 Vac / 5 A @ 30 Vdc |
| Analog Output |
Isolated 4–20 mA |
| Load Capacity |
Up to 600 Ω |
| Power Input |
85–264 Vac / 100–300 Vdc |
| Power Consumption |
< 10 W |
| Electrical Isolation |
1500 Vac |
| Mounting Type |
DIN rail or panel mount |
| Operating Temperature |
-20°C to +65°C |
| Humidity |
95% non-condensing |
| Protection Class |
IP20 |
| Dimensions |
50 × 150 × 120 mm |
| Weight |
0.8 kg |
System Functionality
The monitor continuously processes vibration signals from an attached proximity probe system and compares measured values against configured alarm thresholds. When abnormal vibration levels are detected, the system activates relay outputs for protective shutdown or alarm indication.
Key output functions include:
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Real-time vibration trend output via 4–20 mA loop
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Direct signal access through buffered BNC output
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Independent relay-based protection logic
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Adjustable alarm timing and latching behavior
Typical Applications
This configuration is widely deployed in condition monitoring of smaller rotating machines, including:
FAQ
What type of measurement does this monitor support?
It is designed for proximity probe-based shaft displacement and overall vibration monitoring.
Can this unit be integrated into a PLC or DCS system?
Yes. The isolated 4–20 mA output allows direct integration into control and trending systems.
Is this suitable for machine shutdown protection?
Yes. The dual relay outputs provide independent Alert and Danger signals for protection logic.
