Product Core Brief
- Model: 1900/25-01-00
- Brand: Bently Nevada (Baker Hughes)
- Series: 1900/25 Vibration Monitor
- Core Function: Standalone single-channel vibration monitor that processes accelerometer signals, provides alarm relay outputs, and sends 4–20 mA data to control systems.
- Product Type: Single-channel vibration monitor module
- Key Specs: Accepts 200150-series accelerometer input | 4–20 mA recorder output | Alarm relay outputs | Compatible with Trendmaster 2000 | Option code 01-00 defines relay state and reset behavior
- Condition: New Surplus / Factory New (confirm option codes, relay configuration, and firmware before procurement)
Product Introduction
The Bently Nevada 1900/25-01-00 is a single-channel, standalone vibration monitor designed for general-purpose rotating machinery. It accepts an input signal from a compatible Bently Nevada accelerometer—typically the 200150 series—and conditions the signal into vibration measurements for local alarming and remote monitoring.
The monitor provides relay outputs for Alert and Danger alarm conditions, as well as a 4–20 mA recorder output that can be connected to a PLC, DCS, SCADA, or Trendmaster 2000 data collection system. It is intended for machines where continuous vibration protection is desirable but a full 3500 rack-based system is not required.
The model suffix -01-00 refers to configuration options within the 1900/25 family. In Bently Nevada 1900-series monitors, these option codes typically define relay state and reset behavior, such as:
| Option Position | Typical Meaning |
|---|---|
| First option | Relay state: normally energized or normally de-energized |
| Second option | Relay reset: latching or non-latching |
The exact meaning of -01-00 should be confirmed against the product label, nameplate, or the official Bently Nevada 1900/25 ordering information sheet, as option codes may vary by revision and manufacturing date.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Single-channel vibration monitor |
| Brand | Bently Nevada (Baker Hughes) |
| Model | 1900/25-01-00 |
| Series | 1900/25 |
| Sensor Input | Compatible accelerometer, typically 200150 series |
| Transducer Cable | 200152 series |
| Alarm Outputs | Relay outputs for Alert/Danger |
| Analog Output | 4–20 mA recorder output |
| System Interface | Trendmaster 2000 compatible |
| Optional Enclosure | 190100-01 weatherproof enclosure (NEMA 4X) |
| Typical Applications | Pumps, fans, motors, compressors, gearboxes |
Exact input sensitivity, frequency range, power supply, and relay configuration should be verified against the installed unit label and OEM documentation.
Quality Control Process (DYNAMIC GENERATION)
- Part-number verification: Confirm 1900/25-01-00 on the nameplate or product label.
- Visual inspection: Check the enclosure for corrosion, impact damage, or missing mounting hardware.
- Connector/terminal check: Inspect sensor input terminals, relay terminals, and 4–20 mA output terminals for corrosion or loose connections.
- Option code verification: Confirm the -01-00 configuration matches the installed system requirements.
- Power-up test: Verify normal LED status indication and absence of NOT OK faults under safe test conditions.
- Relay and output check: Confirm relay operation and 4–20 mA output if test equipment and a compatible accelerometer are available.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Do not confuse 1900/25 with 1900/27 or 1900/65A. The 1900/25, 1900/27, and 1900/65A are different monitors with different input types, channel counts, and configuration options. They are not direct replacements without verification.
❗ Verify the -01-00 option code. Relay state and reset behavior must match the existing safety logic. Substituting a different option code may change how alarms behave during power loss or fault conditions.
❗ Confirm sensor compatibility. The 1900/25 is designed for use with compatible accelerometers such as the 200150 series. It should not be connected to eddy-current proximity probes or velocity sensors unless explicitly supported.
❗ Check the transducer cable. The correct cable is typically the 200152 series with the required length. Using an incorrect cable may affect signal integrity.
❗ Verify power supply requirements. Confirm whether the installed unit requires AC or DC power and that the supply voltage matches the monitor specification.
❗ Do not assume Trendmaster 2000 compatibility without checking. Some option codes affect how the monitor behaves in BYPASS or NOT OK conditions when connected to Trendmaster 2000.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Alternative | Compatibility Level | Migration Notes |
|---|---|---|---|
| Bently Nevada 1900/25-01-00 | Same 1900/25-01-00 | Direct | Match full model code and option configuration. |
| Bently Nevada 1900/25-xx-xx | 1900/25-01-00 | Needs Verification | Confirm relay state, reset mode, and system logic. |
| Bently Nevada 1900/27 | 1900/25-01-00 | Not direct | Different monitor family; verify input, output, and configuration. |
| Bently Nevada 1900/65A | 1900/25-01-00 | Not direct | 1900/65A is a multi-channel monitor with different capabilities. |
| Bently Nevada 3500 series modules | 1900/25-01-00 | Not interchangeable | 3500 is a rack-based system; 1900/25 is a standalone monitor. |
Benchmarks:
- 1900/25 standalone single-channel vibration monitor.
- Accepts compatible Bently Nevada accelerometer input, typically 200150 series.
- Provides relay alarm outputs and 4–20 mA recorder output.
- Compatible with Trendmaster 2000 data collection system.
- Option code -01-00 defines relay configuration; verify before replacement.
- Third-party listings that describe 1900/25 as a proximity probe, velocity sensor, or 3500 module are incorrect.
