The transmitter is designed for measuring the wind speed in the pipe. The high-precision wind speed measuring unit developed by ourselves is sensitive and can measure the small wind speed quickly and accurately. Pipe-type installation, easy to install on-site, anti-interference circuit design, can withstand on-site inverter and other strong electromagnetic interference, equipment with screw-free terminal wiring, more convenient to use. LCD screen real-time display the current pipe wind speed, more intuitive embodiment of the current pipe wind speed situation. The high-precision wind speed measuring unit has the advantages of small starting wind speed and sensitive reaction, and can be applied to the occasions with bad environment, such as ventilation pipes and oil fume pipes; installation of perforated flange, using high-quality silicone sealing ring, small air leakage, durable;Wiring terminal adopts screw-free terminal, no tools, as long as a press a plug can be connected; The use of dedicated EMC anti-interference devices, can withstand all kinds of strong electromagnetic interference, such as on-site frequency converters;There are DC and AC-DC power supply modes Colour:As Shown Material:plastic type: 4-20MA Package Contents: 1 x 0-30m/s Pipes Wind Speed Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.