This machine is equipped with up to two modular precision sensors and an optional barometric reference. It is primarily used as transfer / working standard for the testing resp. calibration of diverse pressure measuring instruments. Calibration software DCal allows comfortable calibration of pressure measuring instruments. It also has a Digital precision pressure indicator IKA 500. Due to an optionally certified measurement inaccuracy of 0.01 % FS, differential pressure of ± 0.03 % FS of the entire measuring chain.