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The HHF11A anemometer can measure air flow, humidity, dew point, wet bulb, air volume, and capacity. The built-in microprocessor ensures high accuracy. It can also track the maximum and minimum values along with current readings, displaying the flow rate in the user’s choice of meters per second or cubic feet per minute.
With its low-friction, ball-bearing, mounted-wheel design, the HHF11A is accurate at both high and low air velocity. The impeller is accurate to 5% FS and can measure the slightest breeze (0.3 m/s). Other features include single-point averaging of air volume and capacity, °C/°F selection, and auto shut-off after 10 minutes of non-use.
With its low-friction, ball-bearing, mounted-wheel design, the HHF11A is accurate at both high and low air velocity. The impeller is accurate to 5% FS and can measure the slightest breeze (0.3 m/s). Other features include single-point averaging of air volume and capacity, °C/°F selection, and auto shut-off after 10 minutes of non-use.
| Measurement | Range | Resolution | Accuracy |
| Air Velocity | 0.3 to 35 m/s (1 to 114 ft/s) | 0.1 | ±5% FS |
| Air Volume | 0 to 99,999 m³/min (0 to 99,999 ft³/min) | 0.1 | ±5% FS |
| Capacity | 0 to 99,999 BTU/h (0 to 99,999 kW) | 0.1 | ±3% FS |
| Temperature | -20 to 60 °C (-4 to 140°F) | 0.1° | ±0.6°C (1°F) |
| Humidity | 0 to 100% | 0.1% | ±3% FS from 10 to 90% ±5% FS above 90% |
| Dew Point | -68 to 70°C (-90 to 158°F) | 0.1° | ±3% FS from 10 to 90% ±5% FS above 90% |
| Wet Bulb | -22 to 70°C (-7.6 to 158°F) | 0.1° | ±3% FS from 10 to 90% ±5% FS above 90% |