CNG pressure gauge(sensor) Model:CNG; Accuracy grade: 2.5,'output signal: =-0.25v; Diameter of outer shell (mm):50,54,64,75; Scale on the meter:0~400 bar/ 6000psi (dual scales); Fixing way:radial,axial; Cover material material:ABS engineering plastic (black),aluminum alloy(LY-12CZ),Stainless Steel (SUS304); Scale face material:PC(Polycarbonate); Spring pipe material:bronze (Qsn6.5-0.1), Stainless steel (SUS316L); Connector part material:brass (HPb59-1), Stainless steel (SUS316L); Connector thread:G1/4(PF1/4),M14*1.5,ZG1/4(PT1/4),NPT1/4; Power source: DC(12+-2v).we are the only company that manufacture CNG pressure gauges-electromagnetic induction.CNG Automobile Combusting Gas Pressure gauges(sensor) is mainly used to measure the pressure of natural gas inside an automobile gas tank and lines. In addition it also and sends it to the oil/gas switch gas pressure into an electrical signal and sends it to the oil/gas switch in front of driving control board in order to actually indicate the amount of gas inside hte gas tank.