KPM-3 is developed and created by LLC Gidrogazkomplekt for convenience at operation of devices of measurement of pressure, and has useful functions extremely necessary for the correct and reliable work on objects of housing and public utilities in utility networks of heating and water supply. KPM-3 is the auxiliary device and simplifies mounting, dismantle and periodic checking of devices of pressure, and also performs function of a damper. By means of this device it is possible to modify the installed pressure sensors.