1. Product Overview
YGM307 is an air flow transmitter based on the pitot tube flow measurement principle. One or several pairs of sample gas collection holes can be opened in the probe part to measure the air volume of a single point or the average air volume of multiple points. This product provides air output per unit area. Users can set input parameters according to the sectional area of the air duct. The shell is made of engineering plastics and aluminum alloy, which can be used to measure the air volume under different working conditions.
2. Technical parameters
Measuring range: selected according to the site wind speed
Measurement accuracy: ± 6% FS (at 20 ℃, under standard atmospheric pressure) Under stable gas flow rate, ± 4% FS is optional
Signal output: current output type: 4 ～ 20mA (three wire system); Load resistance RL ≤ 500 Ω
Voltage output type: 0 ～ 10V (three wire system); Load resistance RL ≥ 10K Ω
485 output type: standard ModBus RTU
Response time: T90 ≤ 3s
Power supply: 20~28VDC
Electrical connection: M16 × 1.5, cable diameter: 4-8mm
Length of probe rod: 100mm~500mm, customizable
Enclosure protection grade: IP65 (when selecting display module, the protection grade is IP54)
Maximum working pressure: less than 1 Bar
Working temperature: transmitter: - 40~+50 ℃
Probe rod: - 40~+60 ℃, - 40~+80 ℃, - 40~+120 ℃ (optional)
Storage environment: temperature: - 20~+60 ℃; Humidity: 0 ～ 85% RH
3. Circuit connection

4. Installation dimension drawing

5. Model Selection Table
YGM307 air volume transmitter