As a new series product specially used for vacuum measurement and control, JC627 vacuum / absolute pressure transmitters has completely solved the problem of difficult vacuum measurement. This series product has three specifications, i.e. JC627G negative pressure transmitter, JC627A absolute pressure transmitter and JC627CA capacitor thin-film absolute pressure transmitter, which have widely been used in such fields as pharmaceutical, medical equipment, airspace and aerospace, scientific research, leakage detection and completed automation equipment fields.