1. Product Overview
YGM305 is a dust explosion-proof product specially designed for places with dust explosion hazards. It has passed the national explosion-proof certification. The explosion-proof sign is Ex tD A21 IP65 iaD 20 T130 ℃, which conforms to the national standards of GB12,476.1-2013, GB1247.4-2010 and GB12,476.5-2013. The YGM305 probe part adopts a rhombic average velocity measuring piece, which can measure the air speed at multiple points. The measuring piece itself has a purging and anti pollution design to ensure that it has good durability even in the environment with severe dust pollution; The shell is made of cast aluminum alloy, with IP65 protection grade, which can completely prevent dust from entering, thus effectively realizing safe explosion-proof.
2. Main technical indicators
Measuring range: selected according to the on-site air volume (air speed)
Accuracy: ± 4% FS (under stable gas flow rate)
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
RS485 output: standard ModBus RTU
Response time: T90 ≤ 3s
Power supply: 20~28VDC
Electrical connection: M16 × 1.5, cable diameter: 4-8mm
Enclosure protection grade: IP65
Explosion proof sign: Ex tD A21 IP65 iaD 20 T130 ℃
Working pressure: less than 1 Bar
Working temperature: transmitter: - 20~+40 ℃; Probe rod: - 40~+80 ℃, - 40~+200 ℃ (optional)
Storage environment: temperature - 20~60 ℃, humidity 0~85% RH
3. Circuit connection

4. Installation dimension drawing

5. Explosion proof certificate

6. Model Selection Table