oil flow meter with good quality and tech advanced testing equipment convenient installation and maintenance ... .B;Flange ,clamp,thread inserted connection etc.C;4~20mA,pulse,0~10V,RS485,HART etc. SBL ... replacing target according to need. 10 ,LCD display.11,4-20mA, 0-10V, impulse, and RS485 outputs.12, ... 1~2 years),external power supply of 24VDCOutput forms:4-20mA;pulse,0-10V;RS232/RS485;Hart protocol, ...