MV2 independently measures the real-time cooling capacity, power consumption and COP of VRF systems, providing reliable performance data under actual operating conditions.
Real timeCooling capacity, power consumption and COP calculation
2 optionsPermanent monitoring or non-intrusive spot measurement
All brandsCompatible with VRF systems from different manufacturers
≤10%Measurement uncertainty verified by A*STAR’s National Metrology Centre
How it works
Measure actual VRF performance.
MV2 measures the refrigerant and electrical parameters needed to determine the actual cooling performance of a VRF system.
Sensors installed around the outdoor unit collect refrigerant flow, temperature, pressure and electrical power data. MV2 processes these readings to calculate cooling capacity and COP continuously, providing a clear picture of system performance under actual operating conditions.
Measurement options
Permanent monitoring. An intrusive mass flow meter provides continuous measurement for long-term monitoring and performance optimisation.
Non-intrusive measurement. An externally mounted ultrasonic flow meter supports temporary studies and on-demand spot measurements with minimal disruption to the existing system.
01Measure refrigerant conditions
Temperature and pressure sensors measure the refrigerant conditions on both the liquid and gas sides of the VRF system.
02Measure refrigerant flow
A mass flow meter or non-intrusive ultrasonic flow meter measures the refrigerant flow required to determine cooling capacity.
03Measure electrical power
The system records the power consumed by the compressor and condenser fans.
04Calculate and record performance
MV2 calculates cooling capacity, electrical consumption and COP in real time. The results can be viewed, downloaded or integrated with a Building Management System.
MV2 sensor deployment
MV2 collects refrigerant and electrical measurements from the VRF system to calculate cooling capacity, power consumption and COP in real time. Select any photograph to open it at full size.
Benefits
Make VRF performance measurable.
Independently verifies actual VRF performance.
Calculates cooling capacity and COP in real time.
Identifies inefficient operation and performance decline.
Supports system tuning and energy optimisation.
Uses measured data instead of manufacturer estimates.
Supports Green Mark M&V requirements.
Suitable for permanent monitoring or spot measurements.
Compatible with new and existing VRF systems.
Measured, not estimated
From estimated performance to measured results.
VRF performance is often assessed using manufacturer data or indirect calculations. MV2 measures the system under actual operating conditions, allowing performance issues and optimisation opportunities to be identified using real evidence.
A live MV2 record: cooling capacity, power consumption and COP logged minute by minute. Because all three are measured rather than assumed, COP can be followed as the load moves.
Technical characteristics
The measurements behind every result.
MV2 determines the actual cooling output of a VRF system using measured refrigerant enthalpy, refrigerant flow and electrical power.
The methodology is developed with reference to ISO 5151:2017, while the system’s measurement uncertainty has been independently verified by A*STAR’s National Metrology Centre.
Measured performance
Cooling capacity, power consumption and COP
Measured parameters
Flow, temperature, pressure and power
Measurement accuracy
≤10% uncertainty, verified by A*STAR NMC
Measurement options
Permanent monitoring or non-intrusive spot measurement
Data output
Real-time and historical performance data
Data access
USB, local portal, BMS or cloud platform
Compatibility
Suitable for different VRF brands
Reference standard
ISO 5151:2017
Four ways to get the data out: a USB download, a LAN connection to the MV2 web portal, ModbusTCP into a BMS network, or streaming to IOJunction on cloud or on premises.
Applications
Where MV2 can be applied.
MV2 is suitable wherever the actual operating performance of a VRF air-conditioning system needs to be measured, verified or improved.
Performance verification
New VRF system commissioning
Post-installation performance verification
Cooling-capacity and COP assessment
Verification of energy-efficiency claims
Brand & system efficiency comparison
Energy optimisation
Investigation of high energy consumption
Identification of inefficient operating conditions
System tuning and control optimisation
Before-and-after retrofit comparison
Compliance and certification
Green Mark measurement and verification
Energy audits and sustainability assessments
Performance-based contractual verification
Measurement support for energy-saving projects
The nine applications
Select any photograph to open it at full size.
Connected work
Measurement is the start of the work, not the end.
Service
Energy Audit & OSE
MV2 data feeds the baseline and the prioritised improvement roadmap.
