... high reliability and durability Sulfuric acid flow meter (98%) with 4~20mA output formCharacteristics:1. l Measurement flow of liquid, gas, steam, ropy ... ,thread inserted connection etc.C,4~20mA,pulse,0~10V,RS485,HART etc. SBL target flowmeter with digital display is a completely ... -in 3.6N li batter,(lifetime 1~2 years),external power supply of 24VDCOutput forms:4-20mA;pulse,0-10V;RS232/RS485 ...