3-Cup Anemometer, 0~45 m/s Wind Speed Sensor, RS 485 Output

Description

Three-cup anemometer for sale, measures 0-45 m/s wind speed, outputs pulse/current 4-20mA/RS-485/voltage 0-5V. The wind speed sensor is specifically designed to accurately and reliably measure air velocity under the adverse environmental conditions. The wind gauge outputs voltage and current signals by electromagnetic induction, the value and horizontal wind speed are linear relation.

Specification

Features

• The 3-cup anemometer is a sensitive wind speed sensor designed to measure air velocity and wind run.
• Wind cups are made of carbon fiber material, with high intensity and low starting threshold.
• The signal processing units are built in the housing shell. It can be widely used in meteorology, marine, environmental monitoring, weather station, airport, harbor, laboratory, industrial and agricultural areas.

3-Cup Anemometer Output Characteristics

• Pulses Output

Characteristic transfer function:

F = 0, V = 0

F ≠ 0, V = 0.1 + 0.0875 × F

(where V = wind speed (m/s), F = output frequency (Hz) )

• Current Output

• Voltage Output

• RS-485 Output

lf the transmission distance is over 100m, please add a 120Q terminal matching resistances on the front endand back end of bus interface respectively. See the modbus communication protocol specification.

3-Cup Anemometer Dimension Diagram (Unit: mm)

Tips: 0-5V output signal conversion calculation for 0-45m/s anemometer.

For example, 3-cup anemometer wind range is 0~45m/s, 0-5V output. When the output signal is 2V, calculate the current wind speed value.

The span of this wind speed range is 45m/s, expressed by a 5V voltage signal,
45m/s ÷ 5V = 9m/s /V, that is, a voltage of 1V represents a wind speed change of 9m/s.

The measured value is 2V － 0V = 2V * 9m/s /V = 18m/s. The current wind speed is 18m/s.

The calculation formula is:
Wind speed = 9*voltage, the unit of voltage value is V.