... &corrosion high reliability and durability high accuracy Nitrate flow meter (LCD display)Characteristics:1. l Measurement flow of liquid, gas, ... RS485;Hart protocol,GPS.Our digital flow meter are all LCD display,it also can show accumulated flow and instant flow ... 08% and fast measurementSmall pressure loss,only about 1/2ΔP of standard orifice.Explosion-proof sign: Intrinsically safe type(ExiallCT4 ...