Vacuum pressure gauge

A vacuum pressure gauge for measuring a vacuum pressure in a vacuum system component (VSC), the vacuum pressure gauge comprising:

• a base for mounting the vacuum pressure gauge to the vacuum system component;
• a vacuum pressure sensor fastened to the base;
• a control unit configured to control the vacuum pressure sensor, the control unit comprises a first printed circuit board;
• a power supply unit for supplying power to the vacuum pressure sensor, the power supply unit comprises a second printed circuit board;
• wherein the control unit is mounted to the power supply unit such that the first and second printed circuit boards are arranged in a stacked arrangement;
• the power supply unit and the vacuum pressure sensor having complementary electrical connectors for connecting the power supply unit to the vacuum pressure;
• wherein the power supply unit is removably mounted to the vacuum pressure sensor;
• and
• the control unit and the power supply unit are removable from the vacuum pressure sensor as a unit.