Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Family | Bently Nevada 1900/65A |
| Full Model Code | 1900/65A-01-02-01-00-00 |
| Power Option (A) | 01 — 110 to 220 VAC @ 50/60 Hz external supply |
| Display Option (B) | 02 — Attached display with 10 ft PVC cable |
| Mounting Option (C) | 01 — DIN-rail mount |
| Approvals Option (D) | 00 — None |
| Communication Option (E) | 00 — No Modbus communication |
| Vibration Inputs | 4 channels (configurable) |
| Supported Vibration Sensors | 2-wire/3-wire accelerometers, velocity sensors, proximity probes |
| Temperature Inputs | 4 channels (E, J, K, T thermocouples; 2-wire/3-wire RTD) |
| A/D Resolution | 24-bit |
| Bandwidth | Up to 25 kHz |
| Alarm Levels | ALERT and DANGER |
| Relay Outputs | 6 configurable relays with voting logic |
| Analog Outputs | 4 configurable 4–20 mA recorder outputs |
| Buffered Outputs | 4 monitor buffered outputs + 1 display output |
| Communication | None (no Modbus option installed) |
| Display | Attached display/keyboard with 10 ft PVC cable |
| Mounting | DIN-rail mount |
| Power Supply | 110/220 VAC external supply (18–36 VDC to monitor) |
| Typical Applications | Fans, pumps, compressors, motors, generators, auxiliary rotating equipment |
Product Introduction
The Bently Nevada 1900/65A-01-02-01-00-00 is a general-purpose equipment monitor configured for 110/220 VAC external power, an attached display with a 10 ft PVC cable, DIN-rail mounting, no special approvals, and no Modbus communication option.
Like all 1900/65A units, it provides four vibration inputs and four temperature inputs in a single compact package. Each vibration channel can be configured for proximity probes, velocity sensors, or accelerometers. Each temperature channel supports common thermocouple types (E, J, K, T) and 2-wire/3-wire RTDs.
The key difference from other 1900/65A variants is the option configuration:
- A01 means it uses an external 110/220 VAC-to-DC power supply rather than direct 18–36 VDC.
- B02 means it includes an attached display/keyboard with a 10 ft PVC cable, allowing local viewing of channel data and minor configuration changes.
- C01 means it is configured for DIN-rail mounting.
- D00 means no special approvals are specified.
- E00 means no Modbus communication option is installed. This unit cannot communicate with a DCS, SCADA, or PLC via Modbus unless upgraded.
QA/QC Transparency SOP
- Model Code Verification: Confirm the full model code 1900/65A-01-02-01-00-00 matches the nameplate. Verify A01 power option, B02 display option, C01 DIN-rail mount, D00 approvals, and E00 no Modbus.
- Display & Cable Inspection: Verify the attached display is present with the 10 ft PVC cable intact. Check for cable damage, connector issues, or display faults.
- Power Supply Verification: Confirm the external 110/220 VAC power supply is present and delivers 18–36 VDC to the monitor module.
- Power-Up Self-Test: Apply power and verify normal LED indication and display operation. Confirm no persistent fault conditions.
- Channel Function Test: Apply known sensor signals or use a signal simulator to verify vibration and temperature channel response.
- Alarm & Relay Verification: Simulate ALERT and DANGER conditions. Verify relay actuation and 4–20 mA output response.
- Communication Confirmation: Confirm that no Modbus communication is available (E00). If Modbus is required in the application, this unit cannot provide it without a communication upgrade.
- Configuration Check: Confirm that configuration data is present in non-volatile memory. If blank, note that configuration must be loaded before field installation.
- Final QC & Packaging: Document test results, configuration status, and condition grade. Pack with terminal protection and ESD-safe materials.
Field Engineer Gotchas
- No Modbus on this unit. The E00 option means no Modbus communication is installed. Do not expect Ethernet or serial Modbus connectivity.
- External AC supply required. The A01 option uses a 110/220 VAC external supply. Do not apply AC directly to the monitor module itself — it receives 18–36 VDC from the external supply.
- Display cable is 10 ft PVC. The B02 option includes a 10 ft PVC cable. If a longer or TEF cable is needed, this is not the correct variant.
- DIN-rail mount only. The C01 option is DIN-rail mount. It is not configured for bulkhead mount or weatherproof housing.
- Configuration does not transfer automatically. A replacement unit must be loaded with the correct configuration file, including channel assignments, alarm setpoints, relay logic, and 4–20 mA mapping.
- Not a 3500 rack module. The 1900/65A is a standalone monitor and cannot be installed in a 3500 rack.
Bently Nevada 1900/65A-01-02-01-00-00
Application Scenarios
- AC-powered installations: Sites where 110/220 VAC is available and an external power supply is preferred over direct 18–36 VDC.
- Local display requirement: Applications where operators need to view channel data and alarm status locally without a separate HMI or SCADA system.
- DIN-rail panel installations: Compact control panels for auxiliary equipment where DIN-rail mounting is standard.
- Non-networked monitoring: Applications where 4–20 mA analog outputs and relay contacts are sufficient, and Modbus communication is not required.
- Legacy 1900/65A replacement: Restoring monitoring capability on existing installations where the original unit had the same option configuration.
FAQ
What does 1900/65A-01-02-01-00-00 mean?
It is a 1900/65A general-purpose equipment monitor with: A01 = 110/220 VAC external power supply, B02 = attached display with 10 ft PVC cable, C01 = DIN-rail mount, D00 = no special approvals, E00 = no Modbus communication.
Does it support Modbus?
No. The E00 option means no Modbus communication is installed.
What power does it need?
It uses an external 110/220 VAC power supply that outputs 18–36 VDC to the monitor module.
Can I use it without the display?
The B02 option includes an attached display. The monitor can operate without local display interaction, but the display hardware is part of this configuration.
Is it compatible with the 3500 system?
No. The 1900/65A is a standalone monitor and is not compatible with the 3500 rack system.
What should I check before installing a replacement?
Verify the full model code, configuration file, channel assignments, sensor types, alarm setpoints, relay logic, 4–20 mA mapping, display cable condition, and external power supply output voltage.
Is this unit still in production?
The 1900/65A is generally considered a legacy platform. Availability should be confirmed with Baker Hughes or an authorized distributor; otherwise, expect surplus or refurbished supply.
