Bently Nevada 1900/65A-01-02-01-00-00 – General-Purpose Machinery Protection Monitor for Pumps, Fans, and Small Compressors

This unit is the Bently Nevada 1900/65A, a compact, DIN‑rail machinery protection monitor that helps you safeguard rotating assets with simple, reliable trip logic and easy 4–20 mA feedback to your control system. From my experience, it’s a solid fit for single or dual-bearing machines where you want proven vibration protection without the complexity of a full rack. The “-01-02-01-00-00” build typically indicates a 24 Vdc supply with dual dynamic inputs, 4–20 mA outputs, and programmable relays — a very common field configuration for pumps and blowers.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance; full payment before delivery
• Express delivery: FedEx / UPS / DHL

Key Features

• Two-channel vibration monitoring – Measures radial/axial vibration or casing acceleration/velocity for protection and trending.
• 4–20 mA per channel – Simple tie‑in to DCS/PLC; one thing I appreciate is how maintenance can trend health without extra gateways.
• Programmable alert/danger relays – Clean, deterministic trips to shut down or alarm in most cases.
• Flexible sensor support – Works with proximity probes, accelerometers, and velocity (Velomitor‑type) sensors.
• RS‑485 Modbus RTU – Lightweight integration for status, setpoints, and values; typically reduces wiring overhead.
• USB service/configuration – Faster commissioning and setpoint management on the bench or at the panel.
• DIN‑rail mounting, compact form – Saves cabinet space and simplifies retrofit projects.
• Rugged temperature range – Built for industrial environments where panels run warm.

Technical Specifications

Brand / Model	Bently Nevada 1900/65A-01-02-01-00-00 (hardware series commonly referenced as 167699-02)
HS Code	9032.89 (Other automatic regulating or controlling instruments)
Power Requirements	24 Vdc nominal (typically 18–36 Vdc), <10 W typical load
Dimensions & Weight	Compact DIN‑rail module; approx. 100–120 mm (W) × 140–160 mm (H) × 90–120 mm (D); ~0.9–1.1 kg
Operating Temperature	Typically −35 °C to +70 °C
Signal Input Types	2 dynamic inputs for proximity/acceleration/velocity sensors; optional tachometer (Keyphasor‑style) speed reference
Outputs	4–20 mA per channel; programmable Alert/Danger relays; buffered transducer outputs available
Communication Interfaces	RS‑485 Modbus RTU; USB service/configuration port
Installation Method	DIN‑rail or panel mounting; typically used in general‑purpose or Div 2/Zone 2 panels

Application Fields

Engineers choose the 1900/65A when they need dependable protection for:

• Process pumps and seal‑less magnetic drive pumps (API/ISO service)
• Fans, blowers, small/medium motors and gearboxes
• Vacuum pumps, compressors, centrifuges, and mixers
• Utility assets: cooling towers, HVAC drives, booster sets
• Skid OEM packages where space and simplicity matter

One maintenance lead told us they swapped older relays for a 1900/65A on a pump train and immediately got cleaner trip logic and clearer 4–20 mA trends into the PLC — fewer nuisance trips, better decisions.

Advantages & Value

• Reliability – Mature platform with predictable alert/danger behavior; in many cases this reduces unplanned stops.
• Compatibility – Works with common Bently Nevada proximity systems and industrial accelerometers/velocities; easy 4–20 mA to any PLC/DCS.
• Cost Efficiency – Lower footprint and wiring than rack systems; typically faster commissioning.
• Lifecycle Support – Straightforward field replacement, spares, and configuration backup ease long‑term ownership.

Installation & Maintenance

• Panel/Cabinet – Mount on 35 mm DIN‑rail inside a clean, ventilated enclosure; leave at least 50 mm clearance for wiring and heat dissipation.
• Power & Ground – Use a clean 24 Vdc supply; bond shield drains at the monitor end; maintain a single‑point ground to minimize noise.
• Wiring – Use shielded, twisted pairs for dynamic signals; route sensor cables away from VFD power to avoid coupling.
• Safety – Verify relay logic and fail‑safe wiring during FAT/SAT; use trip‑multiply or inhibit during run‑up/overspeed checks when applicable.
• Routine Care – Periodic visual check of terminations, confirm 4–20 mA scaling in the DCS, and re‑validate setpoints after major maintenance.
• Firmware/Config – Back up configuration files; update firmware via the service port when released by the manufacturer.

Quality & Certifications

• Certifications: CE, UL/cUL (Class I, Div 2) and ATEX/IECEx Zone 2 for many builds; RoHS compliant.
• Manufacturer Warranty: Bently Nevada provides standard warranty on new units (typically 1 year, region dependent).
• Our Coverage: 365‑day warranty on supplied units as stated above.

Supporting Components (Common Pairings)

• Bently Nevada 3300 XL Proximity Probe Systems (5 mm / 8 mm) with matching Proximitor drivers – for shaft vibration and position.
• Bently Nevada Velomitor velocity sensors (e.g., 330400 series) – for casing velocity on pumps and fans.
• Industrial IEPE accelerometers (BNC or terminal connection) – for broadband acceleration on gearboxes and motors.
• Keyphasor‑style tachometer pickups – when speed reference or phase is required for certain measurements.
• Shielded signal cable assemblies and USB configuration cable – for low‑noise installations and quick setup.

You might notice that this build code is a practical, field‑proven combination. If your application calls for different relays or comms, the 1900/65A family supports multiple option sets, so we can match it to your standards with minimal change on the panel.