EPRO SP3402 Vibration Monitor – Technical Specifications
1. General Data
Manufacturer: EPRO (now part of Baker Hughes)

Model: SP3402

Type: Vibration monitoring module for bearing condition & overall vibration

Application: Industrial machinery (pumps, motors, fans, compressors, etc.)

2. Input Specifications
Sensor Compatibility:

Velocity sensors (e.g., seismic transducers, 4–20mA loop-powered)

Accelerometers (IEPE or charge-type, depending on variant)

Measurement Modes:

Overall vibration (RMS or peak velocity, e.g., 0–20 mm/s or 0–25.4 mm/s)

Bearing condition (via gSE/HFD/envelope detection for high-frequency analysis)

Frequency Ranges:

Overall vibration: Typically 10 Hz – 1 kHz (ISO 10816 compliant)

Bearing defect detection: 1 kHz – 15 kHz (demodulated high-frequency signals)

3. Output Signals
Analog Outputs:

4–20mA (vibration level or bearing condition, selectable)

Fault output (optional)

Relay Outputs:

2 or 3 relays (configurable for Warning/Danger thresholds)

Contact Rating: Typically 250V AC/DC, 5A

Optional Communication:

RS-485/Modbus RTU (for integration with DCS/PLC systems)

4. Thresholds & Alarms
Adjustable Setpoints:

Warning (Alert) and Danger (Trip) levels for vibration/bearing condition

Configurable via DIP switches or software (MMS6000 compatibility)

Time Delays: Adjustable to prevent false alarms (e.g., 1–10 sec).

5. Power Supply
Voltage Range: 20–30V DC (standard) or 90–250V AC/DC (optional)

Power Consumption: ~3W (typical)

6. Environmental & Certifications
Operating Temperature: -30°C to +70°C (-22°F to +158°F)

Housing Protection: IP66/IP67 (dust/water-resistant)

Certifications:

ATEX/IECEx (for hazardous areas – Zone 1/21 if applicable)

CE, UL, cUL (depending on variant)

7. Mechanical Details
Mounting: DIN-rail or panel mounting

Dimensions: ~100 x 120 x 60 mm (varies by model)