ONYX-RSD kit — advanced diagnostics for intermittent faults
The ONYX-RSD is a specialized ONYX kit built for intermittent faults on rotary screw compressors. It instruments the machine in depth — 6 temperature points, pressure and power quality — with a remote alarm, online or offline. It’s the advanced-diagnostics tool we deploy when the problem hides.
Field challenge
Intermittent faults are the most expensive to diagnose: the compressor trips, overheats or weakens “every now and then,” then everything returns to normal before the technician arrives. A one-time measurement catches nothing — you have to instrument the machine and wait for the event to happen again.
Measurable benefits
Six temperature probes (bearings, stages, oil, air), a pressure probe and a power-quality analyzer record continuously. The remote alarm flags the deviation the moment it occurs, and the data around the event is kept: the intermittent cause becomes visible, time-stamped and quantified. No more guesswork.
Online or offline
The kit works online — live data in the online charts and a remote alarm — or in standalone offline mode: it records locally even with no network, useful in unconnected rooms. The data is then retrieved for analysis. For continuous energy monitoring of the system, see the ONYX-DIAG or the ONYX-360 instead.
Specifications
| Measurements | 6 × temperature (-20 to 200 °C) · pressure · power quality |
|---|---|
| Included sensors | 6 temperature probes · 1 pressure probe · power-quality analyzer |
| Alarm | Remote alarm (configurable thresholds) |
| Operation | Online (online charts) · offline option (standalone local recording) |
| IoT server | ONYX server — Modbus gateway + online charts |
| Communication | Modbus RTU (RS-485) · Modbus TCP (Ethernet) · wireless and LTE options |
| Power supply | 120 VAC or 24 VDC |
| Data hosting | Local server OR cloud (managed by Onyx M3, flat-rate, included) |
| Visualization | Online charts · remote alarm |
Measurement devices
Compatibility
- Rotary screw compressors of all brands
- Intermittent-fault diagnostics: overheating, trips, electrical drift
- Unconnected rooms: standalone offline mode
What's included
- 6 temperature probes (-20 to 200 °C)
- 1 pressure probe
- Power-quality analyzer
- Configured remote alarm
- ONYX IoT server (preconfigured Modbus gateway + online charts)
- Cabling and connection accessories
Frequently asked questions
How does this differ from the ONYX-DIAG?
The ONYX-DIAG measures the system's energy efficiency (power, pressure, flow). The ONYX-RSD is an advanced-diagnostics kit: it instruments one rotary screw compressor in depth (6 temperatures, pressure, power quality) to track down a specific intermittent fault.
Why six temperature sensors?
To locate the source of an intermittent overheating: bearings, compression stages, oil, intake and discharge air. Six points cover the critical zones of a rotary screw compressor.
What if the room has no network?
The kit works offline: it records locally, standalone, and the data is retrieved afterwards. Online, you also get live tracking and the remote alarm.
Request a quote
Tell us about your application (flow, pressure, number of compressors): we confirm the configuration and the price. Billing by transfer or purchase order — no online payment.
Not sure this is the right equipment? Free consultation — we'll look at your system together.