Product Core Brief
- Model: 1900/65A-00-01-01-00-00
- Brand: Bently Nevada
- Series: 1900/65A General Purpose Equipment Monitor
- Core Function: Standalone 8-channel monitor that continuously measures vibration and temperature, compares against user-programmable Alert/Danger setpoints, and drives relay and 4–20 mA outputs for machinery protection.
- Product Type: General Purpose Equipment Monitor
- Key Specs: 4 vibration inputs + 4 temperature inputs | 24 Vdc power | DIN rail mount | no display
- Condition: New Original / New Surplus
Product Introduction
Running auxiliary pumps, fans, blowers, and small compressors without continuous protection is a common reliability gap. The Bently Nevada 1900/65A-00-01-01-00-00 closes that gap without requiring a full 3500 rack. It accepts four vibration inputs—configurable for accelerometers, velocity sensors, or proximity probes—and four temperature inputs for thermocouples or RTDs.
Each channel can generate up to four derived variables, with independent Alert and Danger setpoints. Six configurable relays and four 4–20 mA recorder outputs make integration into DCS, SCADA, or PLC systems straightforward. The unit stores configuration in non-volatile memory and supports Ethernet/RS-232/RS-485 Modbus communication when equipped with the gateway option. For this specific -00-01-01-00-00 configuration, the display and Modbus gateway presence should be verified against the physical label before commissioning.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Part Number | 1900/65A-00-01-01-00-00 |
| Product Type | General Purpose Equipment Monitor |
| Vibration Inputs | 4 channels (accelerometer, velocity, or proximity) |
| Temperature Inputs | 4 channels (E, J, K, T thermocouples; 2-/3-wire RTD) |
| ADC Resolution | 24-bit |
| Bandwidth | Up to 25 kHz |
| Relay Outputs | 6 configurable relays (Alert/Danger/OK logic) |
| Analog Outputs | 4 configurable 4–20 mA recorder outputs |
| Communication | Ethernet + RS-232/485 (Modbus; verify gateway fitment) |
| Power | 18–36 Vdc (A00) |
| Display | None (B00) |
| Mounting | DIN rail (C01) |
| Operating Temperature | -20°C to +70°C |
| Approvals | CSA/NRTL/C, ATEX/IECEx Zone 2 (model-dependent; verify label) |
Key Selling Points & Differentiators
- 8-channel coverage in a standalone footprint. Four vibration plus four temperature inputs replace multiple single-purpose monitors.
- Mature signal chain. Uses the same proven circuit architecture found in 3500/3300 systems, just in a compact DIN-rail package.
- Flexible sensor compatibility. Each vibration channel can be software-configured for 2-/3-wire accelerometers, velocity sensors, or eddy-current proximity probes.
- Direct integration. 4–20 mA recorder outputs and optional Modbus gateway simplify DCS/PLC/SCADA connectivity.
- Clear boundary. Not recommended for API 670 critical turbine/compressor protection where a full 3500 rack with TMR voting is specified. This unit targets general-purpose and balance-of-plant assets.
Quality Transparency SOP
- Part number and revision audit. We verify the side label reads 1900/65A-00-01-01-00-00 and confirm the A00/B00/C01 option codes match the physical unit.
- Power-up test on 24 Vdc bench supply. We confirm normal LED status, no fault indications, and stable operation under no-load conditions.
- I/O continuity check. Using a Fluke multimeter, we verify terminal block integrity on all sensor, temperature, relay, and 4–20 mA terminals.
- Configuration port verification. We confirm the Ethernet/serial port is physically present and responsive (Modbus gateway fitment varies by sub-option).
- Visual QA and ESD packing. Connectors, LEDs, DIN rail clip, and housing are inspected for damage. The unit is anti-static bagged with desiccant for shipment.
Technical Risk Avoidance
❗ Verify the power option before wiring. The A00 code means 18–36 Vdc. Do not apply 110/220 Vac directly—only the A01 variant uses an external AC-to-DC supply.
❗ Confirm display and gateway fitment. The -00-01-01-00-00 code indicates no display (B00) and DIN rail mount (C01). The D00/E00 fields govern communication and approvals; check the label to confirm whether the Modbus gateway is populated.
❗ Match sensor type to channel configuration. Proximity probes, velocity sensors, and accelerometers require different channel types and sensitivity settings. A mismatch will produce incorrect readings or fault conditions.
❗ Observe hazardous-area voltage limits. If installed in a Zone 2 / Division 2 area, relay contact voltages must stay below 30 Vac rms or 30 Vdc per the approval documentation.
Buyer’s FAQ
Is this genuine OEM or aftermarket? Genuine Bently Nevada surplus. We buy from verified industrial inventory and verify the part number against the physical label. No clones or rebuilt substitutions.
What condition is it in? New Original or New Surplus, depending on stock. If it has been previously installed, we will list it as Used Pull. The listing will state condition explicitly.
Does this unit include the Modbus gateway? The -00-01-01-00-00 code does not make gateway fitment obvious from the ordering string alone. We verify the Ethernet/serial port and label before shipping and will note it in the listing.
Can I use this as a direct replacement for 1900/55? Only with the correct mounting kit. The C04 option is the 1900/55 replacement kit; your unit is C01 (DIN rail). Mechanical adaptation would be needed.
What warranty do you offer? Standard 12-month warranty against DOA and functional defects. Configuration support and sensor scaling are buyer responsibilities.
