Description
Product Core Brief
- Model: 1900/65A-00-00-02-00-01
- Brand: Bently Nevada
- Series: 1900 Series General Purpose Monitor
- Core Function: Provides continuous online protection for balance-of-plant assets.
- Product Type: Vibration & Temperature Monitor
- Key Specs: 24 Vdc | 8-Channel | Modbus RTU
- Condition: New Original (New Surplus)
BENTLY 1900/65A-00-00-02-00-01
Product Introduction
Bently Nevada 1900/65A-00-00-02-00-01 is a standalone monitor built for general machinery. It delivers continuous protection for auxiliary equipment like cooling tower fans and blowers.
Unlike traditional rack-based systems, this unit reduces installation costs significantly. It features 24-bit A/D converters with a 25 kHz bandwidth. Field engineers must manually configure alarm setpoints using dedicated software.
Key Technical Specifications
- Supply Voltage: 18 to 36 Vdc
- Vibration Inputs: 4 channels (velocity, acceleration, proximity)
- Temperature Inputs: 4 channels (E, J, K, T thermocouples or RTDs)
- Relay Outputs: 6 configurable relays with voting logic
- Analog Outputs: 4 configurable 4-20 mA recorder outputs
- Communication: Modbus RTU via RS-232/RS-485
- ADC Resolution: 24-bit with 25 kHz bandwidth
- Dimensions: 7.75 x 5.88 x 2.93 inches
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-00-00-02-00-01 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-00-00-02-00-01
Compatibility Matrix & Benchmarks
- 1900/65A-00-00-02-00-01 → 1900/65A-00-01-03-00-00 : Direct — verify display option code
- 1900/65A-00-00-02-00-01 → 2300 Series : Needs Adaptation — recommended replacement
- 1900/65A-00-00-02-00-01 → 3500/42M : Needs Adaptation — requires config change in System 1
