DF681 is a portable wind speed measuring instrument. Featuring a metal aluminum casing, large screen display, rechargeable design, standard USB-A charging interface, and a pluggable hot probe. It has a wide range of applications in measuring pipeline environment, heating, air conditioning refrigeration, environmental protection, energy conservation monitoring, meteorology, agriculture, refrigeration, drying, clean workshops, chemical fiber textiles, various wind speed experiments, etc.

Main Features

Principle of hot wire measurement

Display metric and imperial units

Manual switch display backlight, convenient for reading in dark environments

Maximum/minimum fixed value

Rechargeable battery

Scheduled automatic shutdown

Can store 150 sets of historical data

Portable case+calibration certificate

technical indicators

Range: 0-30m/s

Accuracy: ± 3.0% reading+0.02m/s

Power supply: Powered by a rechargeable 3.6V lithium-ion battery. USB-A type charging interface

Probe rod interface: USB-B

Probe length: 500mm

Operating temperature range: 0 ℃ -40 ℃

Display size: 43 × 24 mm

Protection level: IP65

Dimensions: 153 × 66 × 28 mm

Weight: Approximately 800g

Instrument selection

Model Specification Range

DF681-01 0—3m/s

DF681-02 0—7m/s

DF681-03 0—20m/s

DF681-04 0—30m/s

• DF681 hot handheld anemometer. pdf