Product Core Brief
- Model: 1900/65A‑00‑00‑01‑00‑00
- Brand: BENTLY
- Series: 1900 General‑Purpose Monitor Platform
- Order Suffix Breakdown
- 00 = Power: 18‑36 VDC input
- 00 = Display: No local attached display, no remote display hardware
- 01 = Mounting: DIN‑rail mounting hardware fitted
- 00 = Approvals: Standard base certifications
- 00 = Communications: No Modbus‑TCP Ethernet option installed
- Core Function: Stand‑alone multi‑variable monitor for pumps, fans, blowers and small rotating equipment; accepts vibration, position and temperature sensors, generates alert/danger relay outputs without rack‑based infrastructure.
- Product Type: General‑Purpose Equipment Monitor, DIN‑rail mount, DC‑powered, display‑less, no onboard Ethernet.
- Key Specs: 4 dynamic transducer inputs;4 temperature inputs;6 SPDT relays;4 isolated 4‑20 mA outputs; no integrated Ethernet ⚠️ EOL‑retired; 2300 series designated replacement; limited surplus stock.
Bently 1900/65A
Product Introduction
BENTLY 1900/65A‑00‑00‑01‑00‑00 is a display‑less variant of the 1900/65A monitor. It mounts directly to standard DIN‑rail and runs from 18‑36 VDC plant power. There is no front‑panel screen; all configuration is completed via PC configuration software connected over service port.
This unit can process proximity probes, velocity sensors or accelerometers on the four dynamic channels, plus RTD and thermocouple signals on four temperature channels. It provides six programmable SPDT relays for alarm and trip logic and four isolated 4‑20 mA analog outputs for DCS recorders. This specific part number ships without Modbus‑TCP Ethernet hardware. If network data export is required, a separate 1900/01 communications upgrade kit must be purchased and installedBaker Hugh…. It uses 24‑bit ADC with 25 kHz dynamic bandwidth —though your mileage may vary when running long unshielded sensor cables inside high‑EMI cabinets.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Dynamic Input Channels | 4 channels; proximity probes, 2‑wire /3‑wire velocity, accelerometers |
| Temperature Input Channels | 4 channels; 2‑wire/3‑wire RTD; TC types E, J, K, T |
| Alarm Levels | Per‑channel Alert / Danger; channel NOT‑OK fault detection |
| Relay Outputs | 6 SPDT relays;5 A @250 VAC resistive; latching / non‑latching; AND/OR voting logic |
| Analog Outputs | 4 isolated 4‑20 mA recorder outputs |
| Auxiliary Outputs | 4 buffered transducer outputs |
| Communications | Service port only; no factory‑fitted Modbus‑TCP Ethernet; upgrade kit 1900/01 required for network connectivityBaker Hugh… |
| Power Supply | 18‑36 VDC; typical 0.35 A, max 1.0 A |
| Mounting | DIN‑rail clip (factory fitted for this part number); bulkhead plate not included |
| Local Display | None; configuration via PC software only |
| Operating Ambient Temperature | ‑40 °C to +70 °C |
| Relative Humidity | 5‑95 %, non‑condensing |
| Dimensions | 196.9 mm ×149.4 mm ×74.4 mm |
| Physical Weight | 0.77 kg |
| Country of Origin | United States |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Source traceability, serial number anti‑counterfeit check, visual inspection (no corrosion, cracked case, burned terminal blocks). Inspect screw terminals for thread damage. Confirm suffix code matches 1900/65A‑00‑00‑01‑00‑00 to verify no display and no Ethernet hardware.
- Live Functional Test: Full power‑on self‑test; simulate vibration and temperature inputs; verify alert/danger relay actuation and 4‑20 mA scaling; continuous 24‑hr burn‑in with temperature logging. Since no front‑panel display exists, read status entirely through configuration software.
- Electrical Parameter Test: Insulation resistance (500 V Megger, >10 MΩ), ground continuity. Flag any resistance drift below threshold.
- Firmware Verification: Read and log firmware revision; confirm Ethernet option flag shows disabled. Save and photograph complete configuration profile. Well, technically it supports multi‑variable per‑channel processing, but only on firmware v4.2+.
- Final QC & Packaging: Anti‑static bag seal, QC‑passed label with test date. Include matching terminal plug hardware with the unit.
Bently 1900/65A
Replacement Pitfall Guide
❗ Communications Hardware Absent: This exact part number does not include Modbus‑TCP. Field crews often mistakenly expect Ethernet port out‑of‑box. Network access requires separate 1900/01 upgrade kit and firmware re‑enableBaker Hugh….❗ No Local Display: There is no front‑panel keypad‑display. All setup, tuning and troubleshooting must be done with PC configuration software. You cannot adjust thresholds locally on the unit itself.❗ Relay Logic Misconfiguration: Factory defaults are generic. Verify energize‑on‑alarm versus de‑energized‑for‑trip logic before connecting safety‑critical trip circuits. Mis‑wired relay modes can disable machine protection.❗ Power Supply Mismatch: Operate strictly within 18‑36 VDC range. Voltage transients above 36 VDC can destroy internal power conditioning without obvious exterior damage. Apply 20 % power headroom for field power supplies.❗ ESD Damage: Use anti‑static mat and wrist strap while wiring terminals. Static discharge can degrade analog input circuitry with zero visible physical signs.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- Scan cycle: 18 ms (simulated full‑load:4 vibration +4 temperature active channels)
- Comms throughput: Service‑port only; network capability dependent on optional 1900/01 upgrade kit.
