Vacuum Sensors or Vacuum Gauge can send a signal to a readout or a vacuum controller.
Sensors do go bad overtime and are typically easy to replace.
Gauge cables are not always included when purchasing a vacuum gauge / sensor.
Varian Eyesys ConvecTorr Active Rough-Vacuum Gauge.Varian’s Eyesys ConvecTorr Active Vacuum Gauge is a compact pressure-measurement solution. It has a fast response to changing pressures between 1 mtorr and atmospheric pressure, which is made possible by maintaining the temperature of the filament at a constant level. Input; 13-28vdc, 150ma.
Duniway Stockroom Corp I-100-K Vacuum Ionization gauge. Uncoated, Iridium Filament,