Passer — Data Acquisition Controller
Passer is an industrial controller for high-frequency acquisition and primary signal processing from external sensors. It is important to understand: Passer is not a sensor, but an intelligent interface between physical sensors and the upper-level system.
Mental Model
"Not just 'capture the signal', but immediately answer: what's wrong with it?"
Passer digitizes the analog signal at up to 92 kHz and computes basic metrics: RMS, crest factor. The raw signal is transmitted to Larus, where spectral analysis (FFT) and detailed diagnostics are performed.
External sensor Passer Larus
┌──────────────┐ ┌───────────────────┐ ┌────────────┐
│ ICP acceler- │──────► │ ADC (up to 92 kHz)│ │ │
│ ometer (V) │ 0–5V │ RMS │─────►│ Ethernet │
├──────────────┤ │ Crest factor │ │ → Larus │
│ Current │──────► │ Raw signal │ │ (FFT on │
│ transformer │ signal│ │ │ Larus) │
│ (T) │ │ │ │ │
└──────────────┘ └───────────────────┘ └────────────┘
Model Comparison
| Parameter | Passer-V | Passer-T |
|---|---|---|
| Primary purpose | Vibration monitoring | Current diagnostics of electric motors |
| Part number | PSRV-220 | PSRT-110 |
| Signal type | Analog, 0–5 V | Voltage 0–400 V / current 0–5 A |
| Accuracy | ±0.3% | ±1.2% |
| Sensor installation | Sensor glued / screwed in | CT snaps onto cable (15 min) |
| Shutdown required | Yes (sensor mounting) | No |
| Hazardous area | Requires ATEX sensors | CT outside hazardous zone — safe |
| On-device processing | RMS, crest factor (FFT — on Larus) | MCSA (Motor Current Signature Analysis) |
| Operating temperature | −40…+80 °C | −25…+80 °C |
| Interface | Ethernet (2 × port) | Ethernet (2 × port) |
| Mounting | DIN rail 35 mm | DIN rail 35 mm |
When to Choose Which?
Choose Passer-V if:
- You need precise fault localization (bearing, gear mesh, imbalance)
- You monitor mechanical equipment (pumps, compressors, gearboxes)
- You need high-frequency analysis (up to 51.2 kHz)
Choose Passer-T if:
- You need electric motor diagnostics without shutdown
- Installation is in a hard-to-reach or hazardous area
- Budget is limited (CTs only, no accelerometers)
Recommendation: Passer-T as a first step (fast, affordable, no shutdown), Passer-V — where precision matters (fault type, remaining life prediction). For a complete picture — use both on the same machine.
Passer-Sch
A separate variant — a mounting board for grounding monitoring in CVM100 enclosures. Not a data acquisition controller in the traditional sense.
Next
- Passer-V: Vibration Monitoring — specs, wiring diagram, use cases
- Passer-T: Current Diagnostics — specs, wiring diagram, use cases
- Passer-Sch: Grounding Monitoring — board for CVM100
- Use Cases — ready-made solutions and reference projects