Air Velocity Meter Model TA440

A Multi-Function, Easy-To-Operate Air Flow Meter.

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  • Overview
  • Features
  • Specifications
  • Applications
  • Support
The Airflow™ Instruments Velocity Meter TA440 is like having multiple meters for the price of one, yet simple to operate. The TA440 includes a straight probe– all in one compact package. Ideal applications include HVAC system performance, commissioning, plant maintenance, critical environment certification and duct traverses.
The TA440 Model simultaneously measures and data logs several ventilation parameters using a single probe with multiple sensors. The TA440 also measures relative humidity, and also calculates dew point and wet bulb temperature.
  • Accurate air velocity measurement
  • Simultaneously measures temperature and velocity
  • Displays up to three measurements simultaneously
  • Measures humidity (TA440)
  • Articulated probe versions available
  • Calculates volumetric flow, and actual/standard velocity
  • Data logging and LogDat2TM downloading software included
Range:  0 to 30 m/s (0 to 6,000 ft/min)
Accuracy:   ±3% of reading or ±0.015 m/s (±3 ft/min), whichever is greater
Resolution:  0.01 m/s (1 ft/min)
Duct Size:
Dimensions:   1 to 635 cm in increments of 0.1 cm (1 to 250 inches in increments of 0.1 in.)
Volumetric Flow Rate:
Range Actual range is a function of velocity, and duct size
Range (TA440/TA440-A):  -10 to 60°C (14 to 140°F)
Accuracy:   ±0.3°C (±0.5°F)
Resolution:  0.1°C (0.1°F)
Relative Humidity: 
Range:  0 to 95% RH
Accuracy:  ±3% RH
Resolution:  0.1% RH
Wet Bulb Temperature: 
Range:  5 to 60°C (40 to 140°F)
Resolution:  0.1°C (0.1°F)
Dew Point: 
Range:  -15 to 49°C (5 to 120°F)
Resolution:  0.1°C (0.1°F)
Instrument Temperature Range:
Operating (Electronics):  5 to 45°C (40 to 113°F)
Model TA440 Operating (Probe):  -10 to 60°C (14 to 140°F)
Storage:  -20 to 60°C (-4 to 140°F)
Data Storage Capabilities:
Range:  12,700+ samples and 100 test IDs
Logging Interval:
1 second to 1 hour
Time Constant: User selectable
External Meter Dimensions:
8.4 cm x 17.8 cm x 4.4 cm (3.3 in. x 7.0 in. x 1.8 in.)
Meter Weight with Batteries:
0.27 kg (0.6 lbs.)
Meter Probe Dimensions: 
Probe Length:  101.6 cm (40 in.)
Probe Diameter of Tip:  7.0 mm (0.28 in.)
Probe Diameter of Base:  13.0 mm (0.51 in.)
Articulating Probe Dimensions:
Articulating Section Length:  16.26 cm (6.4 in.)
Diameter of Articulating Knuckle:  9.5 mm (0.38 in.)
Power Requirements:
Four AA-size batteries or AC adapter