TSI Airflow & AccuBalance Instruments | Air Balancing Tools Australia

If you’re testing airflows on commercial jobs, hospitals or cleanrooms in Australia, TSI airflow instruments are a proven choice. This collection brings together AccuBalance® capture hoods, hood & frame kits, micromanometers and specialist probes, so you can balance systems accurately and document ventilation performance with confidence.

TSI tools are widely used in HVAC commissioning, testing & balancing, indoor air quality (IAQ) investigations and cleanroom certification, helping you verify airflows against NCC ventilation objectives while supporting energy-efficient building operation.

Why HVAC pros choose TSI for air balancing

• Reliable readings for compliance reporting — AccuBalance capture hoods and DP-Calc micromanometers are engineered for consistent pressure and flow measurement, with ranges and features designed for HVAC commissioning work.
• One-person operation — Lightweight, ergonomic hood designs make it practical for a single technician to measure supply, return and exhaust diffusers without juggling multiple tools.
• Flexible accessories for tricky diffusers — Multiple hood & frame kits, a 16-point velocity matrix and straight airflow probes allow you to test linear slots, laminar flow terminals and oversized grilles.
• Supports NCC ventilation & IAQ strategies — Measuring actual airflow and pressure helps demonstrate that mechanical systems deliver adequate outdoor air and control contaminants in line with Australian guidance.

What you’ll find in the TSI collection

TSI Basic AccuBalance® Air Capture Hood – 8380-B

The TSI 8380-B Basic AccuBalance® Air Capture Hood is your main tool for fast, repeatable supply and return airflow measurements at diffusers and grilles. It combines a capture hood base with a detachable digital micromanometer, so you can take direct volume readings at terminals and then use the manometer on its own for pressure and velocity work.

View Tsi Basic Accubalance Air Capture Hood - Tsi8380-b

TSI Hood & Frame Kits – match the hood to the grille

Your capture hood is only as accurate as its fit to the diffuser. Use dedicated TSI hood & frame kits to seal properly and avoid bypass:

• TSI Hood & Frame Kits 305mm × 1220mm – TSI 801200 – ideal for long linear diffusers and narrow slot outlets.
• TSI Hood & Frame Kits 610mm × 1220mm – TSI 801201 – suits large rectangular supply diffusers and cleanroom terminals.
• TSI Hood & Frame Kit 305mm × 1525mm – 801202 – handy for long throws and extended linear runs.
• TSI Hood & Frame Kits 915mm × 915mm – 801203 – built for large square terminals and high-capacity diffusers.
• TSI Hood & Frame Kits 406mm × 406mm – 801209 – a compact hood for smaller grilles and tighter spaces.
• TSI Hood Expansion Kit 305mm × 1220mm and 610mm × 1220mm – 801206 – expand your coverage while reusing the same base unit.

TSI DP-Calc™ Micromanometer – 5825

The TSI 5825 DP-Calc™ Micromanometer is built for duct and room pressure work. It measures differential and static pressure, calculates velocity with pitot tubes, and logs data for HVAC commissioning, testing & balancing and IAQ investigations.

View TSI Dp-calc Micromanometer - 5825

Velocity matrix & airflow probes for challenging terminals

For complex or non-standard terminals, add:

• TSI 16-Point Velocity Matrix Add-On Kit for 8380 – traverse large or unusual diffusers where a hood seal is difficult.
• TSI straight airflow probes – ideal for duct traverses and point measurements during troubleshooting and commissioning.

Fieldpiece LT83A multimeter – electrical checks while balancing

The collection also includes the Fieldpiece Classic Style Multimeter LT83A, giving you a handy meter for basic electrical checks while you’re on site commissioning or balancing systems.

Where TSI instruments are used in Australia

• HVAC balancing and commissioning – verify that airflows and pressures match design intent and support NCC performance requirements for mechanical ventilation.
• Cleanrooms, healthcare and labs – confirm air change rates and pressure cascades in critical environments where airflow control is essential.
• IAQ investigations and energy optimisation – identify under-ventilated zones, blocked filters or fan issues, and support retrofit decisions that align with Australian energy-efficiency guidance.

How to choose the right TSI hood & accessories

1. Confirm your base instrument – check compatibility with your AccuBalance model (e.g. 8380/8380-B).
2. Match hood size to the diffuser or grille – use smaller square hoods for standard diffusers, longer hoods for linear slots, and larger hoods for high-capacity terminals.
3. Decide if you need pressure & velocity measurements – add a DP-Calc micromanometer if you also need duct traverses, pressure drops or room pressure checks.
4. Add a velocity matrix or probe for complex terminals – use a 16-point velocity matrix or airflow probe when a capture hood can’t fully seal.
5. Plan for calibration and documentation – keep calibration certificates and use the built-in logging features to support commissioning and compliance reports.

Related HVAC Shop collections & resources

• Air Balancing Hood Collection
• Test & Measurements – HVAC Tools
• Digital Gas Manometers & Pressure Instruments
• Learn All About Air Balancing Hoods – Blog
• Optimise Comfort: HVAC Air Balancing for Perfect Airflow – Blog

FAQs – TSI Airflow & AccuBalance Instruments

What is a TSI AccuBalance air capture hood used for?

A TSI AccuBalance capture hood is used to measure supply, return and exhaust airflows directly at diffusers and grilles. This is essential for air balancing, validating mechanical ventilation performance and producing commissioning reports for commercial buildings, health facilities and cleanrooms.

How do I choose the right TSI hood & frame kit size?

Measure the face size of the diffuser or grille and select the closest matching TSI hood size. Use smaller square hoods for standard diffusers, long rectangular hoods for linear slots, and velocity matrices where a full hood seal is not practical.

Do I need a DP-Calc micromanometer as well as a capture hood?

For basic diffuser volume readings a capture hood may be enough, but for duct traverses, filter pressure drop tests, room pressure cascades and fan troubleshooting, adding a DP-Calc micromanometer is strongly recommended.

Can TSI airflow tools help me meet Australian ventilation and IAQ requirements?

Yes. Australian NCC ventilation and IAQ guidance expects adequate outdoor air and control of contaminants. TSI airflow tools help you measure and document real airflows and pressures, supporting performance solutions and verification methods for mechanical ventilation systems.

Who should use and interpret TSI airflow measurements in Australia?

While basic measurements are straightforward, air balancing and IAQ assessments should be carried out or supervised by appropriately qualified HVAC or refrigeration technicians to ensure results align with NCC requirements, Australian Standards and industry best practice.

FAQs – TSI Airflow & AccuBalance Instruments

Q1: What is a TSI AccuBalance air capture hood used for?
A: A TSI AccuBalance capture hood is used to measure supply, return and exhaust airflows directly at diffusers and grilles. This is essential for air balancing, validating mechanical ventilation performance and producing commissioning reports for commercial buildings, health facilities and cleanrooms.

Q2: How do I choose the right TSI hood & frame kit size?
A: Measure the face size of the diffuser or grille and select the closest matching TSI hood size (for example 406 × 406 mm, 610 × 610 mm or 305 × 1220 mm). For linear diffusers, long slots or canopy terminals, choose a longer hood such as 305 × 1525 mm or use a velocity matrix where a full seal isn’t possible.

Q3: Do I need a DP-Calc micromanometer as well as a capture hood?
A: If you only need diffuser volume readings, a capture hood alone may be enough. But for duct traverses, filter pressure drops, room pressure cascades and troubleshooting fan performance, a DP-Calc micromanometer like the TSI 5825 is highly recommended, as it measures differential/static pressure and calculates velocity and flow when used with pitot tubes. 

Q4: Can TSI airflow tools help me meet Australian ventilation and IAQ requirements?
A: Yes. Australian guidance on ventilation and IAQ under the NCC and ABCB handbooks expects building designers and operators to ensure adequate outdoor air and control of contaminants. TSI airflow tools help you measure and document real airflows and pressures, supporting performance solutions and verification methods for mechanical ventilation systems. 

Q5: Who should use and interpret TSI airflow measurements in Australia?
A: While basic measurement is straightforward, air balancing and IAQ assessments should be carried out or supervised by appropriately qualified HVAC or refrigeration technicians. Industry bodies such as AIRAH recommend competent professionals for commissioning and IAQ work to ensure results align with NCC, relevant Australian Standards and good engineering practice. Australian Building Codes Board+1