Bently Nevada 1900/55 & 1900/55-0Z-01-01-01 (Fan Monitor) – English Datasheet

General

Manufacturer: Bently Nevada (Baker Hughes)

Model: 1900/55; 1900/55-0Z-01-01-01

Type: 2‑Channel Fan/General Vibration Monitor (Stand‑alone)

Application: Continuous vibration monitoring & protection for fans, blowers, pumps, and general rotating machinery.

Mounting: Panel‑mount or DIN‑rail mount.

Model Code (1900/55‑0Z‑01‑01‑01)

Segment Code Description

1 0Z Universal AC/DC Power (85–264 VAC, redundant)

2 01 Standard Input (vibration/velocity/acceleration)

3 01 Standard Relay Outputs (Alert/Danger)

4 01 Standard 4–20 mA Analog Outputs

5 01 Standard Firmware (no customization)

Inputs

Channels: 2 independent dynamic vibration channels.

Sensor Types: Eddy‑current proximity probes, velocity sensors, accelerometers.

Frequency Range: 10 Hz to 1 kHz (standard); up to 10 kHz (optional).

Sensor Power: –24 VDC (for proximity probes), 40 mA max per channel.

Measurements

Modes: Displacement (μm), velocity (mm/s), acceleration (g).

Types: RMS, Peak‑Peak, True Peak.

Accuracy: ±1% of full scale (FS).

Resolution: 0.1% FS.

Outputs

Analog: 4–20 mA per channel (isolated, 0–600 Ω load).

Relays: 2 SPDT relays per channel (Alert & Danger), 5 A @ 250 VAC.

Buffered Sensor Output: 1 per channel.

Communication: Modbus RTU (RS‑485, optional).

Alarm Logic

Alert: Programmable threshold (70–90% FS).

Danger: Programmable threshold (80–100% FS).

Delay: 0–60 seconds (adjustable).

Latching: User‑selectable (manual/auto‑reset).

Electrical

Power Supply: 85–264 VAC, 50/60 Hz (0Z option); 18–32 VDC (optional).

Power Consumption: ≤15 W (max).

Isolation: 1500 VAC input/output isolation.

Environmental

Operating Temp: –20 °C to +70 °C.

Storage Temp: –40 °C to +85 °C.

Humidity: 5%–95% RH, non‑condensing.

Protection: IP54 (front panel).

Mechanical

Dimensions (H × W × D): 120.7 × 50.8 × 251.5 mm.

Weight: 1.39 kg.