EBT731 Balometer by TSI Alnor - Capture Hood
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EBT731 Balometer by TSI Alnor - Capture Hood
The EBT731 Balometer by TSI Alnor is a capture hood flow meter designed for fast, accurate measurement of supply and return airflow at diffusers and grilles in HVAC commissioning and balancing applications. It measures airflow from 25–2,500 CFM with an accuracy of ±3% ±7 ft/min, and its onboard memory stores over 26,500 samples for thorough documentation of balanced systems. Weighing 7.4 lbs with approximately 12 hours of battery life, it is well-suited for HVAC system commissioning, energy audits, cleanroom qualification, and indoor air quality investigations.
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Rent for flexible short-term use or purchase to own
Rental Rates
Daily
$185.00
Weekly
$430.00
Monthly
Contact for pricing
Reference rates only. You get the best rate calculation - actual price based on your selected rental dates.
What is the TSI Alnor EBT731 Balometer used for?
It measures volumetric airflow at supply and return diffusers and grilles for HVAC commissioning, test and balance (TAB), and troubleshooting. It gives you direct CFM readings at the diffuser — faster and more repeatable than velocity traverses for most TAB work.
What is the EBT731 airflow measurement range?
25 to 2,500 CFM (42–4,250 m³/h).
EBT731 vs. LoFlo 6200D — which capture hood do I need?
Use the EBT731 for standard to high-flow diffusers (25–2,500 CFM). Use the LoFlo 6200D when working with low-volume diffusers or critical environments (labs, cleanrooms) where the hood's resistance can distort low-flow readings.
EBT731 vs. anemometer for TAB work — which is better?
A balometer gives you volume (CFM) directly at the diffuser without conversion. An anemometer gives velocity you then need to convert using duct area. For commissioning work with many diffusers, direct volume measurement is typically faster and more consistent.
How do I get repeatable readings with the EBT731 capture hood?
Center the hood over the diffuser, keep it square with no gaps, and hold position until the reading stabilizes. Use a consistent orientation for each diffuser type. Document fan speed, VAV box state, and door position — these all affect flows and make results defensible.
Does the EBT731 support datalogging?
Yes — it stores 26,500+ samples across up to 100 test IDs, supporting a full commissioning documentation workflow.
What's included in the EBT731 Balometer rental kit?
Handheld micromanometer with base, 2×2 ft fabric hood with frame and connectors, support poles, 18" pitot probe, static pressure probes, neoprene tubing, rechargeable AA batteries and charger, rubber grip handle, mini USB cable, TrakPro software, manual, and calibration certificate.
What does it cost to rent the EBT731 Balometer?
$185/day and $430/week. Pricing beyond two weeks is by quote. For large commissioning projects with many test points, the weekly rate is almost always more economical — a typical multi-floor TAB project will span several days minimum.
Exposure Hazards This Equipment Detects
Air Velocity (CFM / ft/min)
CAS:
N/A
Learn More
Updated on March 09, 2026
PEL TWA
no limits assigned
REL TWA
no limits assigned
TLV TWA
no limits assigned
Features & Capabilities
| Calibration Certificate Available: | ✓ Yes |
| Datalogging: | ✓ Yes |
| Monitoring Scope: | Area Monitoring |
Equipment Specifications
| Type/Class Rating: | Capture Hood — Standard-Flow Balometer |
| Measured Parameters: | Airflow (Volumetric), Air Velocity (with Pitot Probe, Air Flow Probe, or Velocity Matrix), Differential/Absolute Pressure, Temperature (with optional probe), Relative Humidity (with optional probe) |
| Measurement Range: | Airflow: 25–2,500 ft³/min (42–4,250 m³/h), supply and return; Velocity: 25–15,500 ft/min (0.125–78 m/s) with pitot probe, 25–5,000 ft/min (0.125–25 m/s) with air flow probe, 25–2,500 ft/min (0.125–12.5 m/s) with velocity matrix; Differential Pressure: ±15 in. H2O (3,735 Pa), 150 in. H2O max safe operating pressure; Absolute Pressure: 15–40 in. Hg (356–1,016 mm Hg); Temperature: 14–140°F (–10 to 60°C) with temperature/RH probe; Relative Humidity: 5–95% RH |
| Response Time: | Differential pressure sensor: 2 to 8 seconds |
| Resolution: | Pressure: 0.00001 in. H2O (0.001 Pa) static and differential, 0.01 in. Hg (1 mm Hg) absolute; Velocity: 1 ft/min (0.01 m/s); Airflow: 1 ft³/min (1 m³/h); RH: 0.1% RH; Temperature: 0.1°F (0.1°C) |
| Accuracy: | Pressure: ±2% of reading ±0.0001 in. H2O (0.025 Pa) static and differential, ±2% of reading absolute; Velocity: ±3% of reading ±7 ft/min (0.04 m/s) above 50 ft/min; Airflow: ±3% of reading ±7 ft³/min (12 m³/h) above 50 ft³/min; RH: ±3% RH; Temperature: ±0.5°F (0.3°C) |
| Connectivity: | USB data transfer via TrakPro software |
| Compatible Probes / Accessories: | 18-inch Pitot probe, Static pressure probes, Temperature probe, Humidity probe, 16-Point Velocity Matrix, 2×2 ft fabric hood |
| Data Logging Interval: | User selectable |
| Data Logging Capacity: | 26,500 samples, time and date stamped |
| Battery Run Time: | Four AA rechargeable NiMH (included) or alkaline, or AC adapter (included); minimum of 12 hours typical; 4-hour recharge via internal charger |
| Size / Weight: | Manometer: 7.4 × 4.5 × 2.3 in. (18.8 × 11.4 × 5.8 cm); 7.4 lb (3.4 kg) with batteries |
Kit Contents
Manufacturer Resources
Documents
User manuals, safety guides, and technical documentation from the manufacturer:
Videos
Product demonstrations and instructional videos from the manufacturer:
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