Technical parameters 

 Measuring range: water (20 ℃) 1-200000L / h 
 Air (standard conditions) 0.03-4000m3 / h 
 Turndown ratio: 10:1 a special type of standard 20:1 
 Accuracy: standard 1.5 Special Type 1.0 
 Pressure loss: 7kPa-70kPa 
 Medium temperature: 
 Standard: -80 ℃ - 200 ℃; PTFE: 0 ℃ - 85 ℃ 
 High temperature: up to 400 ℃ 
 Media Viscosity: DN15: η <(F15.1-F15.3) 
 η <(F15.4-F15.8) 
 DN25: η < 
 DN50-DN150: η < 
 Ambient temperature: liquid crystal -30 ℃ - 85 ℃ 
 Pointer-type -40 ℃ - 120 ℃ 
 Connection: 
 Standard: DIN2501 standard flange 
 Special type: any standard specified by the user or threaded flange 
 Cable Interface: M20X1.5 
 Power supply: 
 Standard: 24VDC two wire 4-20mA 
 Type :85-265VAC 50HZ AC 
 Battery Type: 3.6V @ 7.5A Li-ion battery, use for three years 
 Alarm output: 
 Minimum or maximum instantaneous flow alarm 
 Open collector output (max 100mA @ 30VDC in 
 Part of impedance 100 ohm) 
 Relay Output: 1A @ 30VDC/0.25A @ 250VAC 
 Pulse output: 
 Accumulated pulse output, the minimum gap of 50 ms 
 LCD: 
 Display instantaneous flow values range :0-50000 
 Accumulated flow display value range: 0 - 
 Protection class: IP65 
 Explosion-proof mark: 
 Intrinsically Safe ia Ⅱ CT5 
 Flameproof d Ⅱ BT6