Description
Product Core Brief
- Model: 1900/65A-00-00-01-00-00
- Brand: Bently Nevada
- Series: 1900 Series General Purpose Monitor
- Core Function: Continuously monitors and protects auxiliary rotating machinery.
- Product Type: Vibration & Temperature Monitor
- Key Specs: 4 Vibration Inputs | 4 Temperature Inputs | Modbus RTU
- Condition: New Original (New Surplus)
BENTLY 1900/65A-00-00-01-00-00
Product Introduction
Bently Nevada 1900/65A-00-00-01-00-00 is a standalone monitor designed for general-purpose equipment. It provides continuous protection for pumps, fans, and compressors without requiring a full 3500 rack.
Unlike the high-end 3500/42M, this unit lacks internal auto-calibration for sensors. Field engineers must manually verify gap voltages using a digital multimeter during installation. It supports up to four vibration inputs and four temperature inputs.
Key Technical Specifications
- Supply Voltage: 24 Vdc ±10%
- Vibration Inputs: 4 channels (acceleration, velocity, displacement)
- Temperature Inputs: 4 channels (RTD or Thermocouple)
- Relay Outputs: 6 configurable relays (5 A @ 250 VAC)
- Analog Outputs: 4 x 4-20 mA recorder outputs
- Communication: Modbus RTU (RS-232/RS-485)
- Operating Temp: -20 °C to +70 °C
- Dimensions: 24.1 mm x 124.5 mm x 117.3 mm
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Trace source via serial number. Inspect PCB for flux residue or pin corrosion.
- Live Functional Test: Power-on self-check. Run Modbus handshake test. Log temperature during 24 hr load.
- Electrical Parameter Test: Measure insulation resistance (500 V Megger, >10 MΩ). Verify ground continuity.
- Firmware Verification: Read firmware version. Photograph DIP switch positions.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with date.
Replacement Pitfall Guide
❗ Firmware Mismatch: Older Bently Nevada 1900/65A-00-00-01-00-00 units may lack newer protocol support. Check the System 1 software compatibility list first.
❗ DIP Switch Misconfiguration: Factory defaults rarely match field settings. Verify bus termination resistor positions. Well, technically it supports Modbus TCP, but only on firmware v3.2+ (most 1900/65A are RTU only).
❗ Terminal Incompatibility: Pin definitions changed between revisions. Check shield grounding at the third terminal block.
❗ Power Supply Mismatch: Calculate total rack power with 20% headroom. This module draws 65 mA at 24 Vdc.
❗ ESD Damage: Use anti-static mat. Dry environments increase failure risk during handling.
Keep these in mind and you’ll cut 90% of rework time.
BENTLY 1900/65A-00-00-01-00-00
Compatibility Matrix & Benchmarks
- 1900/65A-00-00-01-00-00 → 1900/65A-00-01-01-00-00 : Direct — check Modbus gateway option
- 1900/65A-00-00-01-00-00 → 3500/42M : Needs Adaptation — requires config change in System 1
- 1900/65A-00-00-01-00-00 → 3300 XL NSv : Incompatible — different form factor
