Description
1. Product Title
Bently Nevada 1900/65A (PN: 172323-01) – 4-Channel Vibration Monitor
2. Product Overview
The Bently Nevada 1900/65A (Part Number 172323-01) is a versatile, standalone 4-channel vibration monitoring system designed to protect critical rotating machinery such as fans, pumps, compressors, and motors. Unlike the rack-mounted 3500 series, the 1900/65A is a compact, all-in-one unit that integrates power supply, signal conditioning, monitoring logic, and relay outputs into a single enclosure. It accepts inputs from Bently Nevada proximity probes, velocity sensors, and accelerometers to continuously monitor vibration levels, shaft position, and speed. The module 172323-01 specifically refers to the base configuration which supports an optional front-panel display and keypad for local configuration and diagnostics, making it ideal for applications where a full DCS or PLC interface is not available or where a cost-effective, localized protection solution is required.
3. Technical Specifications
- Brand: Bently Nevada (a Baker Hughes business)
- Model: 1900/65A
- Part Number: 172323-01 (Base unit with support for optional display/keyboard)
- Function: 4-Channel Vibration/Position Monitor & Protection Relay
- Input Channels: 4 Independent Channels (configurable per channel)
- Supported Sensors:
- Proximity Probes (Eddy Current) for displacement/position.
- Velocity Sensors for casing vibration.
- Accelerometers (IEPE) for high-frequency vibration.
- Input Impedance: Configurable per sensor type (e.g., high impedance for piezo, low for eddy current).
- Output Relays: 4 Form-C (SPDT) Alarm/Trip Relays (one per channel) + 1 Common OK Relay.
- Relay Rating: Typically 5A @ 250VAC / 30VDC (resistive load).
- Analog Outputs: 4 Buffered 4-20mA outputs (proportional to vibration/severity) for connection to PLC/DCS.
- Communication: RS-232/RS-485 serial port for connection to PC configuration software (BTI Config) or SCADA systems (Modbus RTU support).
- Display/Interface: Supports optional plug-in LCD display and keypad (sold separately or in specific SKUs) for local viewing of real-time values and alarm thresholds.
- Power Supply:
- AC Input: 85–264 VAC, 47–63 Hz.
- DC Input: 100–300 VDC (Universal wide-range input).
- Sensor Power: Provides integrated -24V DC power for proximity probes and +24V DC for IEPE sensors.
- Mounting: DIN-rail mount or Panel mount (flush or surface).
- Operating Temperature: -20°C to +70°C (-4°F to +158°F)
- Certifications: CE, UL, CSA, ATEX/IECEx (for use in hazardous areas when installed in appropriate enclosures), SIL 2 capable (depending on configuration).
4. Key Features & Benefits
- Standalone Simplicity: The 1900/65A eliminates the need for external racks, power supplies, and separate signal conditioners, providing a complete monitoring solution in a single box. This significantly reduces installation time and panel space.
- Flexible Configuration: Each of the four channels can be independently configured for different sensor types and measurement parameters (e.g., Channel 1 for shaft vibration, Channel 2 for casing velocity), offering great adaptability for mixed-machinery trains.
- Local Diagnostics & Display: With the optional display module supported by PN 172323-01, operators can view real-time vibration values, alarm statuses, and historical trip events directly on the device without needing a laptop or HMI.
- Robust Protection Logic: Features configurable alarm and trip delays (on-delay/off-delay) to prevent nuisance trips during startup or transient conditions, ensuring reliable machine protection while maximizing uptime.
- Integrated Sensor Power: Built-in power supplies for common industrial sensors simplify wiring and reduce the total bill of materials for the control panel.
5. Application Scenarios
- Industrial Cooling Fans: Deployed to monitor large induced-draft fans in power plants, detecting bearing wear and imbalance through velocity sensors, and triggering a shutdown before catastrophic failure occurs.
- Water & Wastewater Pumps: Used on critical high-head pumps to monitor shaft displacement and casing vibration, protecting against cavitation and misalignment issues in municipal water treatment facilities.
- Small to Medium Compressors: Integrated into air or gas compressor packages where a full 3500 rack system is too costly or large, providing essential API 670-compliant protection in a compact footprint.
6. Frequently Asked Questions (FAQ)
- Q: What is the difference between the 1900/65A part numbers 172323-01 and others?
- A: The part number 172323-01 typically designates the base 1900/65A unit that includes the necessary circuitry to support the optional front-panel display and keypad. Other suffixes might indicate units pre-configured with specific factory settings, different power cord options, or bundled with the display already installed.
- Q: Can the 1900/65A replace a Bently 3500 system?
- A: For small-scale applications requiring 4 channels or fewer, the 1900/65A is an excellent, cost-effective alternative to the 3500 rack system. However, for large turbines or complex machinery trains requiring dozens of channels, high-speed transient data capture, or extensive networking, the modular 3500 system remains the superior choice.
- Q: How do I configure the 1900/65A?
- A: The unit can be configured locally using the optional front-panel keypad and display (if installed) or remotely via a PC using the free Bently Nevada 1900 Configuration Software connected through the RS-232/485 port. This software allows for detailed setup of sensor types, alarm thresholds, relay logic, and 4-20mA scaling.
BENTLY 3500/20 125744-02 Bently Nevada 3500/15 133292-01 Bently Nevada 3500/15 127610-01
- A: The unit can be configured locally using the optional front-panel keypad and display (if installed) or remotely via a PC using the free Bently Nevada 1900 Configuration Software connected through the RS-232/485 port. This software allows for detailed setup of sensor types, alarm thresholds, relay logic, and 4-20mA scaling.
