Model Interpretation

1900/55‑XX‑XX‑XX‑XX

1900/55: Base model (4‑channel fan monitor, vibration + speed + temperature)

1st XX (Power):

01: 115/230 VAC (50/60 Hz)

02: 85–264 VAC universal

2nd XX (Relays):

00: Standard relay configuration

3rd XX (Options):

01: With speed monitoring

00: No speed monitoring

4th XX (Certification):

01: CSA/ATEX certified

Common part number: 137250‑01.

Technical Parameters

Mechanical

Form Factor: Stand‑alone, panel‑mount

Dimensions (H×W×D): 337 mm × 295 mm × 130 mm

Weight: ~3.18 kg

Enclosure: Industrial metal, IP20

Inputs

Vibration Channels: 4 seismic (accelerometer/velocity) inputs

Speed Channel: 1 tachometer input (0–10 kHz)

Temperature Inputs: 2 RTD (PT100) inputs

Sensor Compatibility: Trendmaster® 2000 accelerometers, 3300 series proximity probes, PT100 RTDs

Vibration Range: 0–50 mm/s peak velocity (low‑frequency optimized: 1–1 kHz)

Speed Range: 0–60,000 RPM

Accuracy: ±1.5% FS (vibration), ±0.1% FS (speed)

Outputs

Relays: 4 × DPDT (Alert, Danger, Speed, Temperature); 5 A @ 250 VAC

Analog Outputs: 4 × 4–20 mA (isolated, for vibration/speed/temperature)

Buffered Output: BNC (raw vibration signal)

Power & Environmental

Power: 115/230 VAC or 85–264 VAC universal

Power Consumption: ~15 W

Operating Temp: −20°C to +60°C

Humidity: 5%–95% RH, non‑condensing

Display: LCD (real‑time values, alarm status)

Status LEDs: OK, Alert, Danger, Fault

Communications

Protocol: Modbus RTU (RS‑485)

Data: Vibration, speed, temperature, alarm status

Core Functions

4‑Channel Low‑Frequency Vibration Monitoring: Optimized for fan gearboxes and large rotating assemblies.

Integrated Speed & Temperature Monitoring: Comprehensive protection for fan systems.

Dual Alarm Thresholds: Independent Alert/Danger for each channel with adjustable delays.

Modbus RTU Communication: Remote monitoring and configuration via RS‑485.

Stand‑Alone Operation: No rack system required; ideal for field installation.

Applications

Power Generation: Cooling tower fans, boiler fans, air handling units.

Oil & Gas: Process fans, blowers, and large auxiliary equipment.

HVAC & Water Treatment: Aeration blowers, ventilation fans, dust collectors.

Manufacturing: Conveyor fans, large cooling fans, and general‑purpose rotating machinery.