Description
The BENTLY 1900/55 (specifically the detailed configuration code 1900/55-0Z-01-01-01) is a specialized, compact, four-channel machinery monitor designed to provide continuous online monitoring and automatic protection for general-purpose rotating machinery, particularly industrial cooling tower fans, air handlers, and small pumps. It functions effectively as a standalone machine defense loop or can interface directly with Trendmaster® 2000 architectures using its built-in Transducer Interface Module (TIM). By tracking early indicators of low-frequency unbalance, misalignment, and structural mechanical looseness, this monitor reduces maintenance overheads and prevents catastrophic mechanical failures.
Product Datasheet & Specifications
- Manufacturer: Bently Nevada (Baker Hughes)
- Part Number: 1900/55-0Z-01-01-01
- Series Model: 1900/55 Series Fan Monitor
- Monitoring Capacity: Four processing channels for transducer inputs and up to four temperature inputs
- Transducer Support: Optimally matched with the 190501 Velomitor® CT transducer; also accepts standard 2- or 3-wire accelerometers and proximity probes
- Supported Frequency Range: 1.5 Hz to 1000 Hz ± 3 dB (designed specifically for low-speed fan gearboxes running at 90 RPM or higher)
- Operating Input Power Range: 18 V DC to 36 V DC (supports external 110/220 V AC converter packages)
- Recorder Outputs: Four independent 4-20 mA analogue loop recorder channels
- Relay Contact Layout: Six fully programmable onboard relay outputs (supporting Alert, Danger, and OK conditions)
- Signal Processing: 24-bit Analog-to-Digital Converter (ADC) for advanced filtering and resolution
- Approximate Physical Dimensions: 24.9 cm x 18.2 cm x 8.9 cm
- Approximate Shipping Weight: 4.5 kg (inclusive of standard display and housing)
- Country of Origin: United States (USA)
- Environmental Range: Operating temperature from -20°C to 70°C under non-condensing humidity conditions up to 95%
BENTLY 1900/55 1900/55-0Z-01-01-01
BENTLY 1900/55 1900/55-0Z-01-01-01
BENTLY 1900/55 1900/55-0Z-01-01-01
Key Application Fields
- Industrial Cooling Towers: Dedicated vibration tracking for large heat-exchanger fan blades and associated drive-shaft couplings.
- HVAC Air Handling Units: Monitors mechanical health profiles of industrial-scale ventilation blower fans in commercial or production facilities.
- Petrochemical Refining Loops: Safeguards secondary rotating machinery, such as small auxiliary pumps, mixers, and localized exhaust blowers.
- Power Generation Utilities: Monitors water circulation pump assemblies and ventilation machinery lines to avoid accidental process trips.
- Wastewater Management: Controls structural monitoring loops on aeration blowers and secondary fluid processing mixers.
Product Instructions & Guidelines
- Pre-Installation Selection: Cross-reference the exact suffix combination (0Z-01-01-01) against your specific engineering blueprints to confirm pre-configured hardware interfaces, power routing, and localized explosion-proof safety options.
- DIN Rail and Panel Mounting: Mount the monitor frame securely onto standard TS35 DIN rails within a vibration-isolated, clean electrical cabinet to prevent cross-vibration interference from adjacent heavy switchgear.
- Transducer Field Termination: Run the sensor lines using shielded, twisted-pair cabling. Maintain tight screw terminations at the rear blocks and ensure the shield drain wire connects only to the chassis earth ground point to minimize industrial radio frequency interference (RFI).
- Front Panel Configuration: Set up localized parameters like time-delays, latching versus non-latching alert relays, and metric/imperial display formats using the front-panel control interface without needing external jumper reconfigurations.
- Regular Testing Routines: Trigger the built-in system self-test algorithm periodically to ensure proper processor function, display pixel illumination, and relay control matrix pathing. Clean the faceplate structure exclusively with anti-static cloth materials.
Q&A – Frequently Asked Questions
- Q: What makes the 1900/55 module specifically suited for fan and cooling tower assemblies?
- A: The module contains tailored low-frequency processing filters designed to function with Velomitor CT sensors, enabling it to pick up slow, destructive rotational vibrations (down to 1.5 Hz) that standard industrial accelerometers normally miss.
- Q: Can this unit operate as a completely standalone guard system without a host DCS?
- A: Yes, it functions perfectly as an independent protective system. It evaluates sensor limits on its own and can trip associated machinery directly via its six onboard programmable relays.
- Q: What is the significance of the 4-20 mA recorder outputs provided on the rear panel?
- A: These lines output a constant proportional current mapping the exact vibration levels to external PLCs, chart recorders, or plant SCADA systems for real-time data trending and logging.
- Q: How does the monitor respond to an open circuit or damaged sensor wire?
- A: The internal OK checking logic immediately detects an out-of-bounds sensor bias voltage, changes the “OK” status relay to un-OK, alerts the operator, and safely suppresses false Danger trips.
Recommended Hot Stock Models
- BENTLY NEVADA 1900/65A-01-01-01-00-01
- BENTLY NEVADA 3500/15 127610-01
- BENTLY NEVADA 3500/22M 288055-01
- BENTLY NEVADA 3500/42M 176449-02
- BENTLY NEVADA 3500/25 149369-01
- BENTLY NEVADA 330130-30-00-05-10-02-00
- BENTLY NEVADA 3500/50 288062-02
- BENTLY NEVADA 3500/32 149986-01
- BENTLY NEVADA 3500/92 136180-01
- BENTLY NEVADA 9200-06-05-10-00
