Product Specification Document: Bently Nevada 1900/65A-01-01-03-00-00

1. Product Overview

2. Basic Product Information

Manufacturer and Model Identity

• Manufacturer: Bently Nevada, a Baker Hughes company

• Model Number: 1900/65A-01-01-03-00-00

• Product Series: 1900 Cordant Series General Purpose Equipment Monitor

• Product Type: Standalone Multi-Channel Machinery Condition Monitor

• Model Code Definition: The suffix -01-01-03-00-00 indicates universal 90–250 VAC power input, enhanced hardware configuration, special relay function setting, default communication parameters and standard enclosure without custom modifications.

• System Compatibility: 3300 XL proximity probes, velocity transducers, ICP accelerometers, Type E/J/K/T thermocouples, Pt100/Pt1000 RTDs, Modbus RTU-enabled DCS, SCADA and PLC systems

• Country of Origin: United States

• Main Components: Main monitor module, integrated LCD display, tactile keypad and multi-status LED indicators

Electrical Characteristics

• Power Supply: 90 VAC to 250 VAC, 50/60 Hz, universal industrial AC input defined by the first -01 code

• Power Consumption: Maximum 15 W under full-load operating status

• Signal Processing: 24-bit high-precision ADC for all input channels, supporting wide frequency bandwidth and high-fidelity signal conversion

• Input Channels: Four universal transducer inputs configurable for proximity, velocity, acceleration and Keyphasor signals; four dedicated temperature inputs compatible with 2-wire and 3-wire RTDs and multiple types of thermocouples

• Output Interfaces: Six programmable SPDT relay outputs with custom relay logic per the -03 code; four galvanically isolated 4–20 mA analog outputs; one buffered raw signal output for external vibration analysis and on-site troubleshooting

• Communication Interface: RS-485 Modbus RTU, adjustable baud rate from 9600 bps to 115200 bps

• Electrical Isolation: Complete galvanic isolation between power loop, signal inputs, outputs and communication ports to eliminate ground loop and electromagnetic interference

Physical and Mechanical

• Enclosure: Reinforced metal housing with EMI shielding. Internal PCB is coated with conformal coating to resist dust, moisture and mild chemical corrosion.

• Mounting: Standard 35 mm DIN rail mounting, also compatible with panel installation.

• Terminals: Removable screw terminal blocks, supporting 12 AWG to 22 AWG field wiring for convenient connection and maintenance.

• Human-Machine Interface: Built-in LCD screen for real-time data viewing and parameter configuration; LED indicators display power status, normal operation, alarm and fault conditions clearly.

• Ingress Protection: IP20 rating for standard indoor cabinet installation.

Environmental Limits

• Operating Temperature: -20 °C to +70 °C

• Storage Temperature: -30 °C to +90 °C

• Relative Humidity: 5% to 95% RH, non-condensing environment

• Vibration Resistance: Withstands continuous 5 g vibration within 10 Hz to 1 kHz frequency range

• Shock Resistance: Tolerates 10 g transient mechanical shock

Compliance and Certification

• Applicable Standards: API 670, ISO 10816, IEC 61000-6-2, IEC 61000-6-4

• Certifications: CE, cULus, ATEX Zone 2, RoHS and ABS marine certification

• Hazardous Area Rating: Class I Division 2 / Zone 2, Temperature Class T4, suitable for non-incendive hazardous industrial locations

• Quality Control: Manufactured in accordance with ISO 9001 quality management system. Every unit is fully calibrated and functionally tested before delivery.

• Lifecycle Status: In active production, with full technical support for new projects, system expansion and equipment retrofits.

3. Function and Product Positioning

Core Functions

• Multi-Parameter Comprehensive Monitoring: Simultaneously measures shaft radial vibration, axial thrust displacement, rotational speed, phase and bearing/process temperature to realize full-condition monitoring of rotating machinery.

• Flexible Signal Processing: Each transducer channel supports multiple sensor types, equipped with configurable high-pass and low-pass filters as well as signal scaling functions to adapt to diverse field measurement demands.

• Customized Relay Alarm & Interlock: Featured with special relay logic defined by the -03 code. Six relays can realize complex alarm grouping, interlock and sequential control beyond standard settings, meeting customized protection requirements. Each channel supports independent Alert and Danger thresholds with adjustable hysteresis.

• Intelligent Fault Diagnosis & Event Logging: Automatically detects sensor open circuit, short circuit and signal anomalies. The non-volatile memory stores up to 200 time-stamped event records for fault tracing, routine maintenance and compliance auditing.

• Data Interconnection: Modbus RTU uploads real-time data to plant control systems; isolated 4–20 mA analog outputs connect to recorders and DCS analog channels for data distribution.

• Local Operation: Onboard display and keypad support on-site data checking, parameter setting and alarm reset without additional configuration software.

Operational Features

• Universal AC Power: Compatible with global industrial AC voltage range, no external adapter needed for direct power connection.

• Enhanced Hardware Design: Optimized circuit structure improves anti-vibration and anti-interference performance, adapting to complex industrial electromagnetic environments.

• Custom Relay Logic: Factory preset special relay assignment and action logic, ideal for sites with customized interlock and alarm rules.

• Wide Sensor Compatibility: Fully compatible with full range of Bently Nevada 3300 XL sensors, and supports mainstream third-party industrial sensors via parameter adjustment.

• Hot-Swap Capability: Allows on-site replacement during normal system operation to reduce downtime.

• Data Security: Configuration data and event logs are stored in non-volatile memory, with no data loss after power failure.

Product Positioning

4. Core Performance Parameters

Measurement Performance

• Transducer Channels: Frequency response 0 Hz to 10 kHz; supports vibration displacement, velocity and acceleration measurement

• Temperature Channels: Thermocouple range -200 °C to +1300 °C; RTD range -200 °C to +850 °C

• Measurement Accuracy: ±0.1% full scale for transducer inputs; ±0.5 °C for temperature inputs

• Repeatability: Better than ±0.05% full scale

• Filter Options: Configurable 4-pole to 8-pole high-pass and low-pass filters

Output Performance

• Relay Specifications: 5 A rated current at 30 VDC; normally open and normally closed contacts configurable with custom action logic

• Analog Output: 4–20 mA isolated output, maximum load 500 Ω, output accuracy ±0.1% full scale

• Communication: Modbus RTU protocol, supports up to 247 slave devices on a single RS-485 network

Reliability

• MTBF: More than 150,000 hours under standard 25 °C operating environment

• Warranty: 1-year standard factory warranty, extended warranty available

• Maintenance: No mandatory routine maintenance; annual calibration verification and visual inspection are recommended

5. General Matching Accessories

Installation and Mounting Accessories

• Standard 35 mm DIN rail mounting hardware (included)

• Optional panel mounting adapter plate

• External protective enclosure for dusty and humid working areas

• Spare terminal blocks and display components

Compatible System Products

• 3300 XL series proximity probes and matched extension cables

• Industrial velocity sensors and ICP accelerometers

• Standard thermocouples and Pt100/Pt1000 RTD sensors

• Modbus RTU based DCS, PLC and remote monitoring terminals

Maintenance and Spare Parts

• Official 1900 Series configuration software

• Calibration verification tools

• Conformal coating repair materials

• Factory calibration report and full test documents (included upon delivery)

Supporting Documentation

• Dedicated datasheet and installation manual for 1900/65A-01-01-03-00-00

• 1900 Series overall application guide

• Modbus RTU communication protocol specification

• API 670 application guideline for auxiliary machinery monitors

6. Applicable Equipment and Industry Fields

Primary Applications

• Power Generation: Auxiliary pumps, cooling fans, blowers and small compressors in thermal power and combined-cycle power plants

• Oil and Gas: Refinery fans, offshore platform pumps, auxiliary compressors and pipeline conveying equipment

• Petrochemical: Process pumps, cooling tower fans, agitators and transmission gear units on chemical production lines

Secondary Applications

• Water and Wastewater Treatment: Large water supply pumps, aeration blowers and processing fans

• Pulp and Paper Industry: Paper machine drive fans, material pumps and auxiliary transmission equipment

• Marine and Offshore: Vessel auxiliary pumps, ventilation fans and non-critical rotating equipment on offshore platforms

Compatibility Notes

• Power Requirement: Designed for 90–250 VAC input. Do not connect to DC power beyond specification range.

• Sensor Matching: Must be used with 3300 XL series proximity probes; incompatible with old non-XL 3300 sensors.

• Relay Logic: The unit is factory set with special relay rules; reconfigure carefully if on-site logic needs adjustment.

• Network Setting: Assign unique Modbus slave address for each unit on the same network to avoid communication conflicts.

• Hazardous Area Use: When applied in Class I Division 1 hazardous areas, install certified external safety barriers between sensors and the monitor.