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TA4 Thermal Anemometer




The TA4 multi tasking Thermal Anemometer is so versatile it saves you money by measuring air velocity, air stream temperature and volume flow, all in one hand held meter.

The multipurpose digital meter is lightweight, durable and easy to read with all the features easily accessible. When switched on the instrument, after countdown, displays the last mode of operation. Any required function is then enabled using the tactile push buttons. These also control the zero reset and area input for volume flow readings or your choice of metric/imperial units on the display.

The slim, telescopic probe is ideal for measuring at high levels or in awkward positions and is quick and simple for general use or entry through restricted access points in ductwork. The superb yaw and pitch characteristics of the Airflow thermistor bead probe design also allow accurate, repeatable readings to be maintained, even up to a 20 degree probe deviation from the airstream direction of flow - see Tech Topic 001

Calibrated to an Internationally recognised standard the TA4 is supplied with a FREE TRACEABLE CERTIFICATE OF CALIBRATION and a reply card is also included for purchasers to register with our FREE annual calibration reminder service.

All Airflow?instruments, including the TA4, are designed to help meet the stringent requirements of the Control Of Substances Hazardous to Health (COSHH) and Building Regulations in the UK

For our UK customers the reminder card service ensures valid certification for COSHH, ISO9001 and Quality Assurance requirements.



Fast, multi-function capability in metric or imperial display

Automatic temperature compensation throughout the range

Reads volume flow - Just enter the area

Super slim?telescopic probe

Key Pad user calibration capability

Durable carry case


Super value - three meters in one

Client confidence with traceable calibration

Quick and easy results with minimal downtimes

Accuracy and comparative values -every time

Hand held convenience


HVAC commissioning and trouble shooting

Clean room safety monitoring

Grilles, louvres and flow hood balancing

Environmental and comfort tests

Air conditioning and ventilation duct checks

Certified for COSHH assurance


Metric Mode

Imperial Mode

Velocity Range

0-30 m/sec

0-6000 ft/min

Volume Range

0-2700 m/sec

0-999,999 cfm

Temperature Range



Accuracy @ 20C & 1013 mbar

3% of Reading ( 1 Digit)

Velocity Resolution

0.01 m/sec

1 ft/min above 30 ft/min
2 ft/min below 30 ft/min

Temperature Accuracy

1C ( 1 Digit)

2F ( 1 Digit)

Area input range

0.008-90 m

0.08-900 ft

Power Supply

4 x 1.5 volt AA cells (rechargeable, alkaline or zinc carbon)

Battery Life

Approximately 15 hours (alkaline cells) operating life

Probe Dimensions


194 mm

7.6 in


930 mm

36.6 in

Tip Diameter

8 mm

5/16 in

Cable Length

1000 mm

39.4 in

Weight (less batteries)

360 gm

12.7 oz

Standard accessories

Durable carrying case, Calibration certificate
Operating instructions


Articulated probe available to special order