1. Product Overview
YGM305 is an intrinsically safe and explosion-proof product specially designed for gas explosion environment, which has passed the national explosion-proof certification. Its explosion-proof signs are Exd [ia Ga] IIB T4 Gb (explosion-proof box), Exd ia IIB T4 Ga (probe assembly), and comply with the national standards of GB3836.1-2010, GB3836.2-2010, GB3836.4-2010, and GB3836.20-2010. YGM305 probe part is made of high temperature resistant stainless steel probe rod, which can be used in the high temperature environment of 200 ℃ at most; The sensor part is designed with intrinsic safety and low power consumption. It is isolated from the main control circuit by zener type safety barrier. The enclosure is a professional explosion-proof case. The explosion-proof function is added under the condition of intrinsic safety and low power consumption, which makes the use of this product more safe and reliable.
2. Main technical indicators
Measuring range: selected according to the on-site air volume (wind 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 d [ia Ga] Ⅱ B T4 Gb (explosion-proof box), Ex ia Ⅱ B T4 Ga (probe assembly)
Working pressure: less than 1 Bar
Working temperature: transmitter: - 20~+40 ℃; Probe rod: - 40~+80 ℃, - 40~+120 ℃ (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