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TSI Alnor

4 in stock. View available part numbers.


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  • Automatically senses & displays supply or return flows
  • Back pressure compensation ensures accurate readings
  • Multiple hood sizes available
  • Bluetooth communications
  • Detachable digital micromanometer offers flexibility
  • Includes 2 ft x 2 ft (610 mm x 610 mm) air capture hood/frame/base
  • Velocity
    • Pitot probes: 25 to 15,500 ft/min
    • Air flow probe: 25 to 5,000 ft/min
    • Velocity matrix: 25 to 2,500 ft/min
    • Accuracy: ±3% of reading ±7 ft/min
  • Pressure
    • Differential pressure: ±15in H2O
    • Absolute pressure: 15 to 40 in Hg
    • Accuracy: ±2% of reading
  • Volume
    • Range: 25 to 2,500 ft3/min capture hood
    • Accuracy: ±3% of reading
  • Relative humidity
    • Range: 5 to 95% RH
    • Accuracy: ±3% RH
  • Temperature
    • Sensor in base: 40 to 140°F
    • Temperature/RH probe: 14 to 140°F (optional accessory)
    • Accuracy: ±0.5°F
  • NIST Certificate Included
  • Meets performance guidelines as outlined under the 2013 California Building Efficiency Standards (Title 24, Part 6) Section 100.0 (h), residential Appendices Section RA3.3.2.1 and RA3.7.3

What's in the Box

  • 2 x 2ft (610 x 610mm) air capture hood/frame/base
  • Detachable micromanometer
  • 18 inch (46cm) pitot probe
  • 2 static pressure probes
  • 16ft (4.8m) neoprene tubing
  • Wheeled luggage-style carrying case
  • NIST-traceable calibration certification
  • 4 AA size rechargeable NiMH batteries
  • Multi-country AC adapter
  • Downloading software
  • USB interface cable
  • Manual

The TSI Alnor EBT731 Balometer Capture Hood is a multipurpose electronic air balancing instrument primarily used for efficiently taking direct air volume readings at diffusers and grilles. It features a detachable micromanometer which can be used with optional probes for increased flexibility in multiple measurement applications. The EBT731 also includes Bluetooth communications for transferring data or remote polling. LogDat Mobile provides a wireless interface to TSI instruments via Bluetooth. Click LogDat Mobile for more details

Offering durable, trouble-free operation, this lightweight, ergonomically designed capture hood kit saves time and money by combining multiple measurement tools into one package. The EBT731 Balometer Capture Hood helps you create healthy and energy efficient environments while meeting local codes, guidelines and regulations for ventilation systems.

Applications include:

  • Test and balance contractors
  • Commissioning agents
  • Facilities managers
  • Health and safety specialists
  • Ventilation system installers


TSI Alnor 800187 Air Flow Probe
18" (46 cm) air flow probe designed for use with the TSI Alnor EBT721 balometer
TSI Alnor Temperature and Humidity Probe
Temperature and humidity probe for the EBT731
TSI Alnor Thermo-anemometer Air Velocity Probes
Hot-wire probes that measure air flow from 0 to 9,999 feet per minute and temperature with relative humidity optional
TSI Alnor 3002017 Static Pressure Probe
Static pressure probe designed for use with the TSI Alnor EBT721 and EBT731 balometers
TSI Alnor Velocity Matrix Probe
Telescopic, articulated probe for the TSI Alnor velocity matrix
TSI Alnor Pitot Probes
Various length Pitot probes designed for use with TSI Alnor instruments


Carrying cases, spare cases

TSI Alnor Replacement Soft Carrying Case
Replacement soft carrying case for EBT731 Balometer, wheeled with handle


Please consider these optional accessories.

TSI Alnor 801090 Velocity Matrix
16-point grid that averages air velocity and is designed for use with the TSI Alnor EBT721 balometer
In Stock
TSI Alnor Norprene Tubing
The TSI Alnor 372000000 Norprene tubing comes in an 8-foot (2.5 meter) length
TSI Alnor 801040 Power Cord
Power cord designed for use with the TSI Alnor EBT720, EBT721, 8710, 8375 and PH72 units
TSI Alnor Balometer Hoods
Various sized hoods for TSI Alnor balometers
TSI Alnor Duct Plugs
Duct plugs for the EBT731, various diameters available
In Stock
TSI Alnor Swirl X Flow Conditioner
Swirl X Flow Conditioner for the EBT731
TSI Alnor CH-STAND Stand
Designed to work with TSI, Alnor and Airflow capture hoods
TSI Alnor Frame Support Pole Kit
Four frame support poles used to construct TSI Alnor air capture hoods
Part Number Price Available
Show Configuration
Base Price
Accessory Kit
Not included
$2,920.50 2
Show Configuration
Base Price
Accessory Kit
Balometer bundled with hood stand and Smart tablet (+$351.00)
$3,271.50 2

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Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 2-3 weeks". Click here to select options