Bently Nevada 1900/65A-01-01-01-00-01 General Equipment Condition Monitoring Instrument
I. Complete Model Segmentation Explanation
1900/65A -01 -01 -01 -00 -01
Segmentation format: Host model – Power Supply – Display – Communication – Shell – Additional Functions
1900/65A: Basic host model, universal equipment monitor
First segment -01: Power supply specifications
01 = External AC power input 110~220V AC 50/60Hz (Requires an external power module)
00 = Local DC power supply 18~36VDC
Second segment -01: Human-machine display configuration
01 = Built-in integrated LCD panel (No extension cables required, local parameter viewing, fault, waveform)
00 = No local display, only remote software configuration viewing
Third segment -01: Communication interface options
01 = Standard Modbus RTU RS485 serial port, can be connected to DCS/PLC/SCADA
03 = With Ethernet Modbus TCP port (Can be directly connected to System 1 for online diagnostic system)
Fourth segment -00: Cabinet shell protection
00 = Standard metal panel installation shell (IP20, used in control cabinets)
01/02 = Outdoor IP65 protective glass steel shell
Fifth segment -01: Additional Function Package
01 = Built-in event recording, complete fault recording functions; 00 = Basic simplified version
Core Hardware Channel Specifications
Input channels (total 8 channels)
4 dynamic sensing channels (Ch1~Ch4)
Software free configuration, compatible with three types of sensors:
Eddy current probe: Radial vibration of shaft, Axial displacement, Eccentric clearance
Speed sensor / Accelerometer: Shell vibration, Bearing impact
Speed sensor: Equipment rotational speed measurement
Bandwidth 0.5Hz~25kHz, 24-bit high-precision ADC, single channel can output peak speed, peak displacement, acceleration, etc. of multiple variables Baker Hugh…
4 temperature channels (T1~T4)
Support: K/E/J/T type thermocouples, 2/3-wire Pt100 thermoresistors, monitoring bearing, motor, gearbox temperature
Output interface
6 programmable relays: OK normal, Alert warning, Danger trip, supports voting logic interlock shutdown
4 independent 4–20mA analog output: Upload vibration / temperature values to DCS
4 sensor buffer output: External oscilloscope for on-site waveform measurement
RS485 Modbus RTU: Remote transmission of all measurement points, alarms, event logs
Key Function Features
Two-level alarm: Warning Alert, Danger Danger, independent thresholds, independent delay settings
200 event records, with timestamp, record over-limit, relay action, sensor failure
Built-in filtering algorithm (4/8 band high-pass/low-pass filtering), suitable for fans, pumps, compressors, motors of different rotational speed ranges
Independent operation without upper system, can also be connected to System 1 for long-term predictive maintenance
Installation: Standard panel hole installation, or optional DIN rail bracket
Applicable Equipment Scenarios
Power plant BOP auxiliary equipment, water pumps, fans, induced draft fans, air compressors, small compressors, motors, gearboxes, cooling tower fans, small hydro turbines, metallurgical conveying equipment, etc. non-critical units (replace expensive 3500 system)
Notes on Replacement of the Same Model
Any digit change in the suffix segmentation will not be compatible with hardware / communication / power supply / screen:
-00 Power supply: DC 24V model, cannot be directly replaced with this AC AC-powered model -03 Communication: Version with network interface, the backplane interface is incompatible with -01 RS485 version
-00 Display: Screenless model, unable to operate and view faults on-site
Supporting software: 1900 Configuration software, used for channel configuration, alarm value setting, and waveform export
Supply: New original equipment with 12-month warranty; Disassembled test pieces are widely available on the market, with a warranty of 3-6 months
Environmental Parameters
Operating temperature: -20℃ ~ +60℃
Protection: Body IP20; Outdoor model available with IP65 enclosure
Overall size: 196.9×149.4×74.4mm, net weight 0.77kg
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