The TSI EBT731 Alnor Balometer Capture Hood is an electronic air balancing instrument for direct air volume measurements at diffusers and grilles. The EBT731 includes a detachable micromanometer, which provides additional flexibility for multiple measurement applications, including pressure, velocity, and flow.
The manometer has an auto-zeroing pressure sensor, an intuitive menu structure, and a large graphic display with a backlight, displaying up to five measurements simultaneously. The system supports Bluetooth and is programmed for multiple languages.
Velocity Range | |
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Pitot Probes | 0.125 to 78 m/s (25 to 15,500 ft/min) |
Airflow Probe | 0.125 to 12.5 m/s (25 to 2,500 ft/min) |
Velocity Matrix | 0.125 to 12.5 m/s (25 to 2,500 ft/min) |
Accuracy | ±3% of reading ±0.04 m/s (±7 ft/min) at velocities >0.25 m/s (50 ft/min) |
Units | m/s, ft/min |
Resolution | 0.01 m/s (1 ft/min) |
Pressure | |
Differential Pressure | ±3735 Pa (±15 in. H₂O) 37.5 kPa (150 in. H₂O), maximum safe operating pressure |
Absolute Pressure | 356 to 1016 mm Hg (15 to 40 in. Hg) |
Accuracy | ±2% of reading ±0.025 Pa H₂O (±0.0001 in.) static and differential ±2% of reading absolute |
Units | in. H₂O, in. Hg, Pa, hPa, kPa, mm Hg, cm Hg, mm H₂O, cm H₂O |
Resolution |
0.001 Pa H₂O (0.00001 in.) static and differential 1 mm Hg (0.01 in. Hg) absolute |
Volume | |
Resolution | 42 to 4250 m³/h (25 to 2,500 ft³/min) capture hood, supply, and return |
Accuracy | ±3% of reading ±12 m³/h (±7 ft³/min) at flows >85 m³/h (>50 ft³/min) |
Units | m³/h, ft³/min, l/s, m³/min |
Resolution | 1 m³/h (1 ft³/min) |
Temperature | |
Sensor in Base | 4.4 to 60°C (40 to 140°F) |
Temperature/RH Probe | -10 to 60°C (14 to 140°F) |
Accuracy | ±0.3°C (±0.5°F) |
Units | °C, °F |
Resolution | 0.1°C (0.1°F) |
Relative Humidity (RH) | |
Range | 5 to 95% RH (temperature/RH probe) |
Accuracy | ±3% RH |
Resolution | 0.1% RH |
Instrument Temperature Range | |
Operating | 4.4 to 60°C (40 to 140°F) |
Storage | -20 to 71°C (-4 to 160°F) |
Statistics | Min, max, average, and sum |
Data Storage | 26,500 samples, time, and date stamped |
Logging Interval | User selectable |
Response Time | 2 to 8 seconds, differential pressure sensor |
Power Requirements | Four AA-size cells or AC adapter |
Physical Characteristics | |
Dimensions (Micromanometer Only) | 18.8 cm x 11.4 cm x 5.8 cm (7.4 in. x 4.5 in. x 2.3 in.) |
Weight with Batteries | PH730: 0.5 kg (17 oz.) PH731: 3.4 kg (7.4 lb.) |
Pressure Connection | 6.35 mm (1/4 in.) OD straight ports with barbed ends for use with 4.76 mm (3/16 in.) ID flexible tubing |