AWISEL
Balometers
For directly measuring and balancing supply and exhaust airflow.
Where it fits
Direct airflow at the terminal.
Balometers support direct supply and exhaust airflow measurement at diffusers, grilles and terminal units. They are useful when a direct capture method is clearer than point-by-point velocity calculation.
They are commonly considered for HVAC balancing, healthcare ventilation checks and cleanroom supply or exhaust reviews.
Terminal details
Start with the terminal.
Share diffuser, grille or terminal dimensions and whether the flow is supply or exhaust.
Expected air volume and room use help determine the suitable instrument configuration.
Ceiling height, terminal position and hood fit affect practical use on site.
Product options
Manufacturer-documented TSI and Testo options.
The options shown here are built around the TSI Airflow Instruments PH731 family and testo 420. AWISEL reviews terminal type, flow range, site access, reporting needs and user readiness together.
TSI Airflow PH731
ProHood Capture Hood PH731
PH731 can be selected for direct air volume readings at diffusers and grilles. The detachable micromanometer supports broader pressure, velocity and flow checks with the same instrument set.
- Model: PH731
- Hood: 610 x 610 mm
- Includes: detachable micromanometer and Swirl X Flow Conditioner
- Functions: supply/return sensing and back pressure compensation
- Measurements: pressure, velocity and flow with optional probes
- Use: HVAC commissioning, cleanroom certification and test-balancing
TSI Airflow PH731-STA
PH731-STA Capture Hood Bundle
PH731-STA is suited to projects where higher ceiling terminals, remote display, data logging and more controlled one-person balancing need to be considered together.
- Model: PH731-STA
- Bundle: PH731 hood, stand and smart tablet
- App: LogDat Mobile remote reader and data logger
- Reach: up to 15 ft / 4.5 m with hood attached
- Data: Bluetooth communication, notes, voice notes and photos
Testo 420
testo 420 Volume Flow Hood
testo 420 is considered when a light volume flow hood is preferred for larger air inlets and outlets. The integrated flow straightener and removable instrument simplify field use.
- Product no.: 0563 4200
- Hood: 610 x 610 mm
- Weight: less than 2.9 kg
- Volume flow: 50 to 4,000 m³/h; accuracy stated for 85 to 3,500 m³/h
- Measures: flow velocity, volume flow, absolute pressure, temperature and relative humidity
Technical documents
PDFs for product review.
Product information is prepared from the official manufacturer pages and the downloadable technical documents below.
| Product | Document | Format | Use | Source |
|---|---|---|---|---|
| TSI PH731 | PH731 ProHood and PH730 detachable micromanometer spec sheet | English UK / A4 | Main technical sheet for product data and specifications | |
| TSI PH731 | PH731 / PH730 owner's manual | English US / 78 pages | Operation, setup and service reference | |
| TSI PH731-STA | LogDat Mobile and Capture Hood Stand app note AF-157 | English UK / A4 | Bundle, stand and remote logging workflow | |
| TSI Airflow | Airflow air measurement instruments catalog | English UK / A4 | Product family context and accessory overview | |
| testo 420 | testo 420 data sheet | English / A4 | Main technical sheet for range, hood size and instrument data | |
| testo 420 | testo 420 instruction manual | English / 26 pages | Operation and setup reference |
Need balometer selection and training?
Tell us the terminal type, expected flow range, application area and user team. We will help define the instrument choice and training scope.