... :2.5%(DN<40) 2>Output:pulse,4-20mADC 3>Display:LCD,LED 4>min.velocity of flow:less than 1.5m ... is a high accuracy flow sensor.Several output and display methods canbe selected.it can be used in the ... lubicated system(option)6.LCD display7.Multi output pulse,4^20mADC.8.spectrum15,25,40,50,80,100,150, ... 20~50 Degree CentigradeHumidity:Less than 95%. LWGQ-300 Field display gas meter with Lithium battery