ONYX-RUN
ONYX-RUN kit — compressor run-status and current proof
You don't know when your compressors run or what they consume — no basis for any optimization decision.
On request
Capability · IoT & monitoring
Measure compressed air, continuously
ONYX kits for advanced diagnostics and energy monitoring; CALMS products for compressor fleet monitoring and management.
ONYX kits — diagnostics & energy monitoring
Power, pressure, flow and dew point on a Modbus server with online charts — local server or cloud, no subscription. Designed for Hydro-Québec energy audits.
Compare models — ONYX kits — diagnostics & energy monitoring
| Specification | ONYX-RUN | ONYX-DIAG | ONYX-360 | ONYX-RSD |
|---|---|---|---|---|
| Measurements | Current (A) · run status · power (kW · kWh) optional | Power (kW · kWh) · run status · pressure · flow | Power (kW · kWh) · run status · pressure · flow · dew point | 6 × temperature (-20 to 200 °C) · pressure · power quality |
| Included sensors | 1 Rogowski coil per compressor (Accuenergy components) · power optional (voltage reference) | Power meters (Accuenergy components) · 4-20 mA pressure transmitters · flow meter (VPInstruments technology) | Power meters (Accuenergy components) · 4-20 mA pressure transmitters · flow meter (VPInstruments technology) · dew point sensor | 6 temperature probes · 1 pressure probe · power-quality analyzer |
| IoT server | ONYX server — Modbus gateway + online charts | ONYX server — Modbus gateway + online charts | ONYX server — Modbus gateway + online charts, alarms configured | ONYX server — Modbus gateway + online charts |
| Communication | Modbus RTU (RS-485) · Modbus TCP (Ethernet) · wireless and LTE options | Modbus RTU (RS-485) · Modbus TCP (Ethernet) · wireless and LTE options | Modbus RTU (RS-485) · Modbus TCP (Ethernet) · wireless and LTE options | Modbus RTU (RS-485) · Modbus TCP (Ethernet) · wireless and LTE options |
| Power supply | 120 VAC or 24 VDC | 120 VAC or 24 VDC | 120 VAC or 24 VDC | 120 VAC or 24 VDC |
| Data hosting | Local server OR cloud (managed by Onyx M3, flat-rate, included) | Local server OR cloud (managed by Onyx M3, flat-rate, included) | Local server OR cloud (managed by Onyx M3, flat-rate, included) | Local server OR cloud (managed by Onyx M3, flat-rate, included) |
| Visualization | online dashboards | online dashboards | online dashboards + alarms | Online charts · remote alarm |
| List price | On request | On request | On request | On request |
ONYX-DIAG
ONYX-DIAG kit — compressed air diagnostics: power, pressure, flow
Power alone is not enough: without pressure and flow, the system's real efficiency — and where it loses money — stays invisible.
On request
ONYX-360
ONYX-360 kit — permanent compressed air and dew point monitoring
Between two visits, nobody watches the compressor room: a drifting dryer or a major leak can go unnoticed for weeks.
On request
ONYX-RSD
ONYX-RSD kit — diagnosing intermittent faults (rotary screw)
A specialized advanced-diagnostics kit for intermittent faults on rotary screw compressors — when the problem only shows up now and then, and no one-time measurement catches it.
On request
Build your ONYX kit
A few choices — immediate approximate budget, pre-filled quote request.
Flow meters
VPInstruments flow meters (VPFlowScope): mass flow, pressure and temperature in a single device — bi-directional measurement depending on the model. The measurement technology behind our audits and ONYX kits, sold separately.
Compare models — Flow meters
| Specification | VPFLOWSCOPE-M | VPFLOWSCOPE-INLINE | VPFLOWSCOPE-PROBE | VPFLOWSCOPE-DP |
|---|---|---|---|---|
| Measuring principle | Insertion probe — thermal mass (Thermabridge) | In-line — thermal mass | Insertion probe — thermal mass (Thermabridge) | Differential pressure (patented) |
| Simultaneous measurements | Mass flow · pressure · temperature · totalized flow (4-in-1) | Mass flow · pressure · temperature · totalized flow (4-in-1) | Mass flow · pressure · temperature (3-in-1) | Flow · pressure · temperature · totalized flow (4-in-1) |
| Bi-directional | Optional (measures both directions) — for ring networks | Yes | Optional — for ring networks | Yes |
| Pipe diameters | P220: 1″–3″ (DN25–80) · P350: 2.5″ and up | 0.5″ · 1″ · 2″ (BSP or NPT thread) | — | — |
| Probe length | P220: 220 mm · P350: 350 mm (13.7″) | — | 400 mm (15.4″) standard · 300 / 600 mm optional | — |
| Pressure range | P220: −1…16 bar(g) / 0…250 psig · P350: 0…10 bar(g) | 16 bar(g) / 250 psig — 35 bar(g) / 500 psig version available | 0…16 bar(g) / 0…250 psig | — |
| Gases measured | Compressed air, N₂, O₂, He, Ar and other technical gases | Compressed air, nitrogen, oxygen, helium, argon, CO₂ — any dry, non-corrosive gas | Dry compressed air, nitrogen and inert non-condensing gases | Compressed air and common industrial gases |
| Interfaces | 4–20 mA · RS-485 (Modbus RTU) · Ethernet (Modbus/TCP) | 4–20 mA · RS-485 (Modbus RTU) | RS-485 (Modbus RTU) · 4–20 mA | 4–20 mA · RS-485 (Modbus RTU) |
| Calibration | Exchangeable VPSensorCartridge — no on-site recalibration | — | — | — |
| Installation | Under pressure, without shutting down the network | Straight runs: ≈ 10 × D upstream · 5 × D downstream | Under pressure (insertion) | — |
| List price | On request | On request | On request | On request |
VPFLOWSCOPE-M
VPFlowScope M — insertion flow meter for compressed air and gases (VPInstruments)
You want to measure compressed air flow in a compressor room or on a line without stopping production.
On request
VPFLOWSCOPE-INLINE
VPFlowScope In-line — point-of-use in-line flow meter (VPInstruments)
You want to quantify the compressed air a specific machine or workstation uses, to hunt leaks and bill actual usage.
On request
VPFLOWSCOPE-PROBE
VPFlowScope Probe — 3-in-1 flow probe for audits (VPInstruments)
You run compressed air audits and want a flow probe installed under pressure, with display and logging right on the device.
On request
VPFLOWSCOPE-DP
VPFlowScope DP — hot, saturated compressed air flow meter (VPInstruments)
You need to measure flow at the compressor outlet, where the air is hot and 100% saturated — a point where thermal flow meters fail.
On request
The equipment behind our assessments, our audits and Hydro-Québec energy audit files.
Which system should you choose?
| Specification | ONYX kits | CALMS products |
|---|---|---|
| Platform | Online charts (open standard) | CALMS cloud, specialized in compressed air |
| Hosting | Local server or cloud (flat rate included) | Cloud |
| Subscription | None | Per tier |
| Best for | Advanced diagnostics · energy monitoring · Hydro-Québec audits | Monitoring · fleet management · control |
The two often combine — we help you choose.
Audit & measurement loggers
CALMS loggers for a one-time measurement campaign on a compressor fleet.
Compare models — Audit & measurement loggers
| Specification | CAL-EDGE-0 | CAL-EDGE-8 | CAL-KIT | CAL-SENSOR-WBOX |
|---|---|---|---|---|
| Analog inputs 4-20 mA | — | 8 | 8 (CAL-EDGE-8 logger) | 2 (12-18 bit) |
| Protocols | Modbus RTU, Modbus TCP/IP, ADS, OPC UA | Modbus RTU, Modbus TCP/IP, ADS, OPC UA | Modbus RTU, Modbus TCP/IP, ADS, OPC UA | Modbus RTU · W-Modbus (wireless) |
| Interface | Ethernet 10/100 · RS-485 | Ethernet 10/100 · RS-485 | Ethernet 10/100 · RS-485 | RS-485 (2-wire) |
| Cloud connectivity | LTE 4G (SMA antenna included) | LTE 4G (SMA antenna included) | LTE 4G (SMA antenna included) | — |
| Measurement interval | 1 s (configurable) | 1 s (configurable) | 1 s (configurable) | — |
| Storage | 8 GB eMMC (256 GB SSD option) | 8 GB eMMC (256 GB SSD option) | 8 GB eMMC (256 GB SSD option) | — |
| Operating temperature | 0 to 50 °C | 0 to 50 °C | 0 to 50 °C | -40 to 85 °C |
| Dimensions | 30 × 110 × 130 mm | 56 × 125 × 250 mm | Explorer case (secure transport) | 103 × 120 mm |
| Weight | 511 g | 865 g | Logger alone: 865 g | — |
| Enclosure | Aluminum | Aluminum | Aluminum (logger) · Explorer case | Aluminum · DIN rail or wall mount |
| List price | On request | On request | On request | On request |
CAL-EDGE-0
CAL-EDGE-0 — 4G compressed air data logger (CALMS)
You don't know what your compressed air system actually consumes — no data, no basis for decisions.
On request
CAL-EDGE-8
CAL-EDGE-8 — 8-channel compressed air audit logger (CALMS)
The compressor controller isn't enough: you need independent pressure, flow and current measurements to audit the system.
On request
CAL-KIT
CAL-KIT — CALMS compressed air audit kit (logger + sensors)
Assembling logger, sensors and cabling piece by piece for every audit costs time — and there's always a cable missing once you're on site.
On request
CAL-SENSOR-WBOX
CAL-SENSOR-WBOX — wireless sensor module for CALMS logger
Some sensors are too far away or too hard to reach to be wired back to the logger.
On request
Permanent monitoring
Continuous fleet monitoring and control: alarms, automatic monthly reports, sequencing.
Compare models — Permanent monitoring
| Specification | CAL-EDGE-PM | CAL-PM | CAL-PM-BASIC-4 |
|---|---|---|---|
| Controller | 32-bit s-PLC 400 MHz · 64 MB RAM · 1 GB microSD | 32-bit s-PLC 400 MHz · 64 MB RAM · 1 GB microSD | Arm Cortex-A53 1.2 GHz s-PLC · 1 GB RAM · 16 GB microSD |
| Protocols | Real-time Ethernet, ADS TCP, Modbus TCP, TCP/IP, UDP/IP | Real-time Ethernet, ADS TCP, Modbus TCP, TCP/IP, UDP/IP | Real-time Ethernet, ADS TCP, Modbus TCP, TCP/IP, UDP/IP |
| Inputs | Analog and digital (vs CAL-EDGE-0) | Market compressors, sensors and software | 8 analog (4-20 mA) · 24 digital (24 VDC) |
| Communication | LTE 4G · Ethernet 10/100 · 2× RJ45 EtherCAT | LTE 4G · Ethernet 10/100 · 2× RJ45 EtherCAT | 3G/4G or LAN · 3× Ethernet 10/100 |
| Measurement interval | 1 s | 1 s | 5 s (configurable) |
| Cloud upload | Every 5 min | Every 5 min | Every 5 min |
| Storage | Min. 8 GB | Min. 8 GB | 16 GB microSD |
| Operating temperature | -20 to +50 °C | -20 to +50 °C | 0 to 50 °C |
| Power supply | 110-220 V AC, 50-60 Hz | 110-220 V AC, 50-60 Hz | 100-240 V AC, 50-60 Hz |
| Dimensions · weight | 16 × 20 × 30 cm · 4.2 kg | 16 × 20 × 30 cm · 4.2 kg | — |
| Mounting | Wall or mast · metal enclosure | Wall or mast · metal enclosure | Wall or mast · steel enclosure · IP23 |
| List price | On request | On request | On request |
CAL-EDGE-PM
CAL-EDGE-PM — permanent compressed air monitoring (CALMS)
No one watches the compressed air system between audits: efficiency drifts go unnoticed for months.
On request
CAL-PM
CAL-PM — CALMS compressor monitoring and control (sequencing)
Your compressors don't talk to each other: with no sequencer, they idle and fight over the same pressure band.
On request
CAL-PM-BASIC-4
CAL-PM-BASIC-4 — control and sequencing of 4 compressors (CALMS)
You want to monitor and drive up to four compressors from a single panel, without having a custom system designed.
On request
Flow control
A smart valve that stabilizes pressure and cuts artificial demand (DN50 to DN200).
CFC
CFC — compressed air flow and pressure control valve (CALMS)
The whole network runs at the pressure of the most demanding point: every extra psi inflates leaks and artificial demand.
On request
Leak detection
Ultrasonic detection: every leak located is quantified in flow and annual cost.
CALMS-ULD
ULD — ultrasonic compressed air leak detector (CALMS)
Leaks often account for 20 to 30% of the air produced, but without a detector they're inaudible in plant noise.
On request
Brands we integrate
Compatible with your system
Compressors, sensors and software of every brand. Describe your application — we confirm configuration and price. Billing by transfer or purchase order, no online payment.