1900/65A Bently Nevada DCS Equipment Monitor

• Brand
  Bently Nevada
• Model
  1900/65A
• Product Name
  General Purpose Equipment Monitor
• Country of Origin
  United States
• HS Code
  85389090
• Dimensions
  196.9mm×149.4mm×74.4mm
• Weight
  0.77 kg
• Operating Temperature
  -20 ℃ ~ +70 ℃
• Storage Temperature
  -30 ℃ ~ +90 ℃
• Power Supply
  24VDC
• Warranty
  12 month
• Product Status
  New and original

Bently Nevada 1900/65A Product Introduction & Technical Specifications

Electrical Parameters

Rated Power Supply: 18–36 VDC wide-range DC input

Typical Operating Current: 0.35 A @ 24 VDC

Max Operating Current: 1.0 A

Typical Power Consumption: 8.5 W; Maximum 14 W

Dynamic Vibration Inputs: 4 channels, 25 kHz bandwidth, 24-bit high-precision ADC

Supported sensors: Eddy current probes, 2/3-wire accelerometers, velocity transducers

Temperature Inputs: 4 channels

Supported sensors: Type E/J/K/T thermocouples, 2/3-wire RTDs

Alarm Relay Outputs: 6 isolated programmable dry-contact relays, supporting voting logic

Analog Recorder Outputs: 4 configurable 4–20mA isolated process outputs

Buffered Signal Output: 4 built-in buffer ports for portable vibration tester connection

Communication Interfaces1. RS232/RS485 Modbus RTU (software configurable)

2. Optional Ethernet Modbus TCP gateway

Event Storage: Non-volatile memory, stores up to 200 time-stamped fault records

Insulation Strength: 2000 VAC isolation between power, signal and ground circuits

1900/65A Bently Nevada Core Product Advantages

1. Multi-Signal Integrated Monitoring: Simultaneous vibration, displacement, speed and temperature measurement in one compact unit, reducing cabinet space and spare part costs.

2. Mature High-End Monitoring Technology: Adopts the same stable signal processing circuit as 3500 rack monitoring system, higher measurement accuracy than single-function transmitters.

3. Flexible Dual-Stage Alarm Logic: Independent Alert (warning) and Danger (trip) thresholds for each variable; 6 relays support combined channel voting interlock for automatic equipment shutdown.

4. Remote Detachable Display: LCD keypad module can be mounted up to 75 meters away, convenient for on-site inspection without opening control cabinet doors.

5. Rich Digital Communication Options: Optional Modbus TCP/RTU realizes two-way data interaction with mainstream DCS, PLC and predictive maintenance software System 1.

6. Built-In Sensor Self-Diagnosis: Real-time detection of probe open circuit, short circuit and signal abnormality with instant alarm output.

7. Multiple Installation Forms: Supports DIN rail and bulkhead mounting; optional IP66 waterproof housing for outdoor cabinet and field harsh environment installation.

8. Cost-Effective Standalone Design: No large rack system required, ideal for low-to-medium power auxiliary equipment monitoring in power, chemical, mining and water treatment industries.

1900/65A Bently Nevada Standard Wiring Method

Step 1 24 VDC Power Supply Wiring

Connect cabinet 18–36 VDC control power to dedicated power terminals; strictly distinguish positive and negative polarity. Install fuse at power inlet for short-circuit protection; single-end ground power cable shielding to cabinet protective earth bar.

Step 2 Vibration Sensor Signal Wiring

Use shielded twisted pair cables to connect proximity probes, accelerometers or velocity sensors to 4 dynamic input terminals. Separate weak sensor cables from high-power AC wiring to avoid electromagnetic interference; single-ended ground cable shield at cabinet earth bar only.

Step 3 Temperature Sensor Wiring

Route thermocouple/RTD wires to 4 temperature input terminals; use dedicated compensation cables for thermocouple measurement to guarantee temperature precision.

Step 4 Alarm Trip Relay Output Wiring

Wire 6 relay dry contact terminals to cabinet alarm annunciators and equipment shutdown interlock loops. Relays provide passive dry contacts without internal power; external control power must be configured separately for trip circuits.

Step 5 4-20mA Analog Output Wiring

Connect 4 analog output channels to DCS/PLC analog input modules; match external loop resistance per system drawing to ensure stable remote signal transmission.

Step 6 Modbus Communication Wiring

RS485 RTU: Double-shielded twisted pair for A/B terminals, install 120Ω matching resistor at the end of communication bus.

Ethernet Modbus TCP: CAT5e shielded network cable connected to RJ45 port, ground cable shield to cabinet earth.

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