Bently Nevada 1900/65A-01-01-03-00-01 Equipment Monitor
A weatherproof AC-powered 1900/65A with attached display and Modbus communications.
Technical Summary
1900/65A-01-01-03-00-01 uses the external 110–220 VAC supply, attached display and fiberglass NEMA 4X/IP66 enclosure of the weatherproof 1900/65A package.
Its final 01 field adds Modbus communications, distinguishing it from 1900/65A-01-01-03-00-00 even though their power, display and housing fields are identical.
Specifications
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Complete Model | 1900/65A-01-01-03-00-01 |
| Power Option | 110 to 220 VAC, 50 to 60 Hz external supply |
| Display Option | Attached display, no cable |
| Mounting Option | Fiberglass NEMA 4X/IP66 housing with window |
| Approval Option | None |
| Communications Option | Modbus communications |
| Transducer Inputs | 4 configurable channels |
| Temperature Inputs | 4 channels |
| Relay Outputs | 6 |
| Recorder Outputs | 4 × 4–20 mA |
| Configuration Interface | I900 Configuration Software |
Features
- Combines local display access with remote Modbus data integration.
- Supports configuration of monitor channels, setpoints, variables and relay voting.
- Uses the weatherproof enclosure for protected field installation.
- Provides recorder, relay and buffered-transducer interfaces alongside communications.
Compatibility
- Record Modbus addressing, register use, polling behavior and plant gateway configuration.
- Confirm the external AC supply and enclosure-entry arrangement before exchange.
- Map transducer and temperature channels separately from the network database.
- Check approval requirements because the 00 approval field selects none.
Replacement
- Export both the monitor database and the supervisory-system communication mapping.
- Capture network settings, cable route and gateway connections before shutdown.
- Commission locally first, then validate Modbus values, quality, scaling and stale-data behavior at the control system.
FAQ
What distinguishes 1900/65A-01-01-03-00-01 from the otherwise similar 00 communication version?
The final 01 field adds Modbus communications, so network configuration and supervisory-system testing become part of replacement.
Which network records are needed for 1900/65A-01-01-03-00-01?
Provide addressing, gateway details, register mapping, polling interval, byte order, scaling and the plant tag database.
Can 1900/65A-01-01-03-00-01 be replaced without changing the DCS?
Only when the replacement restores the same communication settings and validated register behavior expected by the existing integration.
Does Modbus replace the relay trip paths on 1900/65A-01-01-03-00-01?
Do not assume so. Maintain and test the documented hardwired protection architecture independently of supervisory communications.
What must be tested after replacing 1900/65A-01-01-03-00-01?
Prove each sensor and relay locally, then verify remote values, scaling, alarms, communication-loss handling and timestamp behavior.
Which enclosure checks still apply to 1900/65A-01-01-03-00-01?
Inspect the gasket, window, glands, grounding and AC supply even when the maintenance request is driven by a network fault.
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