TSI Airflow & AccuBalance Instruments
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TSI Airflow & AccuBalance Instruments – Professional Air Balancing Tools for HVAC
TSI is a US-based manufacturer of precision airflow and environmental measurement instruments used by HVAC commissioning engineers, building services technicians, and air balancing specialists worldwide. Their AccuBalance range is specifically designed for HVAC air balancing work — measuring supply and return air volumes at grilles and diffusers to verify system performance against design specifications.
What's in the TSI Range
- AccuBalance air capture hoods — the industry-standard tool for measuring air volume flow at supply and return grilles. The capture hood fits over the grille and measures total airflow directly in L/s or m³/h, without needing to know the grille dimensions or velocity profile.
- Vane anemometers — rotating vane instruments for measuring air velocity at grilles, diffusers, and in open ducts.
- Hot-wire anemometers — thermal anemometers for low-velocity measurements and duct traverse work where a small probe tip is needed.
- Micromanometers — differential pressure instruments for measuring static pressure, filter pressure drop, and duct pressure across HVAC systems.
Who Uses TSI Instruments?
- HVAC commissioning engineers — verifying that supply and return air volumes match design specifications at handover
- Building services technicians — diagnosing airflow problems, identifying blocked filters, and checking system balance
- Air balancing specialists — adjusting dampers and VAV boxes to achieve correct airflow distribution across a building
- Energy auditors — measuring actual airflow against design to identify inefficiencies and over/under-ventilated zones
AccuBalance Hood vs Vane Anemometer
| Instrument | Best For | Output |
|---|---|---|
| AccuBalance Hood | Supply/return grilles, commissioning | Direct volume flow (L/s, m³/h) |
| Vane Anemometer | Grilles, diffusers, open ducts | Velocity (m/s), calculated volume flow |
| Hot-Wire Anemometer | Duct traverses, low-velocity work | Velocity (m/s), temperature |
Related Categories
- Test & Measurement Tools — browse the full range of HVAC diagnostic instruments
- Testo HVAC Instruments — compare TSI with Testo anemometers and airflow instruments
- Bluetooth Smart Tools — wireless instruments with app connectivity
- Fieldpiece HVAC Tools — Fieldpiece airflow and Smart Probe instruments
Frequently Asked Questions
Do I need an AccuBalance hood or a vane anemometer for commissioning?
For formal commissioning and air balancing work, an AccuBalance capture hood is the preferred instrument because it measures total volume flow directly without requiring grille area calculations or velocity traverses. A vane anemometer is faster for spot checks and fault finding but requires additional calculation steps to convert velocity to volume flow.
Are TSI instruments compatible with data logging software?
Many TSI instruments include data logging capability and can connect to PC software for report generation. Check the individual product listing for connectivity and software compatibility details.
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