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Passer — Use Cases

Vibration Monitoring of Rotating Equipment​

Challenge: Early detection of bearing, gearbox, pump, and fan defects before catastrophic failure.

Solution: Passer-V2 with ICP accelerometers at measurement points → Larus-10 → Strix.Diagnost

Pump Unit
┌─────────────────────────────────────┐
│  Electric    Coupling   Pump         │
│  motor      ┄┄┄┄┄┄┄   (bearing)    │
│    [A1]      [A2]      [A3]  [A4]   │  ◄── accelerometers
└─────────────────────────────────────┘
     │           │         │     │
     └───────────┴─────────┴─────┴──► Passer-V2 (4 channels)
                                              │ Modbus RTU
                                              ▼
                                         Larus-10
                                              │ MQTT
                                              ▼
                                         Strix.Diagnost

Detectable defects:

  • Inner / outer bearing race wear (BPFI, BPFO)
  • Rolling element defect (BSF)
  • Misalignment, imbalance (1X, 2X harmonics)
  • Resonance, cavitation (pumps)
  • Gear mesh (GMF — gear mesh frequency)

Business result: −30% unplanned downtime, defect detection 7–14 days before failure.

Current Diagnostics of Electric Drives​

Challenge: Electric motor condition monitoring without mechanical intervention (relevant for hard-to-reach locations, hazardous areas).

Solution: Passer-T with current transformers → Larus → Strix

Method advantages:

  • Installation takes 15 minutes — CT snaps onto cable
  • No equipment shutdown required
  • Suitable for motors behind explosion-proof barriers (CT outside the panel)

Detectable defects (MCSA — Motor Current Signature Analysis):

  • Stator winding break / short
  • Rotor defect (broken bars, eccentricity)
  • Bearing problems (indirectly, via current pulsations)
  • Load fluctuations (pump cavitation, valve seizure)

Test Benches​

Challenge: Automated data acquisition and documentation during product testing.

Solution: Passer-V2 (high-frequency vibration) + Passer-T (current) → Larus-100 → SCADA

Example: UEC-Perm Engines

Aircraft engine test bench:

  • 32 vibration points (accelerometers on engine housing and bench supports)
  • Synchronized acquisition at 50 kHz across all channels simultaneously
  • Event correlation with engine speed (tachometric marker)
  • Automated test report generation

Synchronization requirement: PTP (IEEE 1588) with ±1 μs accuracy between Passers — for signal correlation in multi-point measurements.

Mill and Crusher Diagnostics (Mining Industry)​

Challenge: Ball mill monitoring at ore processing plants.

Solution: Passer-V2 → Larus-10 → Strix.Diagnost

Example: Polyus Gold

  • Ball mills rated at 4–8 MW
  • Main drive and mill drum bearing monitoring
  • Gear transmission vibration analysis (GMF)
  • Alerts on ISO 10816 / ISO 20816 threshold exceedance

Business result: prevention of unplanned shutdown costing >10M RUB.

Passer-V2 vs Passer-T Comparison​

CriterionPasser-V2 (vibration)Passer-T (current)
Installation methodSensor glued / screwed into housingCT on cable without cutting
Shutdown requiredYes (sensor mounting)No
InformativenessHigh (precise fault location)Moderate (motor diagnostics)
Hazardous areaRequires ATEX sensorsCT outside hazardous zone — safe
Implementation costHigher (accelerometers + mounting)Lower (CTs only)

Recommendation: Passer-T as a first diagnostics step (fast, affordable, no shutdown), Passer-V2 — where precision matters (fault type, remaining life prediction).