Legacy Indirect Vacuum Gauges & Controllers

Below is a list of older indirect vacuum measurement products and links to their recommended current replacements. These recommended replacement products are the closest match for most common applications. In some cases, the newer product is not a direct replacement for the older product. Contact MKS Instruments for assistance in these situations.

Legacy Product Recommended Replacement
903 Inverted Magnetron Cold Cathode Vacuum Transducer 500 Cold Cathode Gauge Module
909AR Digital and Analog Hot Cathode Vacuum Transducer 354 Micro-Ion® Module
979B Atmosphere to Vacuum Transducer 392 Micro-Ion® Plus Micro-Ion/Conductron Module
999 Quattro Multi-Sensor Vacuum Transducer with Atmospheric Switching 390 Micro-Ion® ATM Micro-Ion/Conductron/Piezo Module
356 Micro-Ion® Plus Modules 392 Micro-Ion® Plus Micro-Ion/Conductron Module
385 Convectron® ATM Module 910 DualTrans MicroPirani/Absolute Piezo Vacuum Transducer
316 Low Vacuum Gauge Controllers 475 Convectron® Gauge Controller
345 Pirani Vacuum Sensors 275 Convectron® Pirani Vacuum Gauge
317 Convection-Enhanced Pirani Vacuum Sensors 275 Convectron® Pirani Vacuum Gauge
Mini Ion Gauge (MIG), Hot Cathode Ionization Vacuum Sensor 355 Micro-Ion® Bayard-Alpert Vacuum Gauges
Nude Hot Cathode Ionization Vacuum Sensor 274 Nude Bayard-Alpert Type Ionization Vacuum Gauge
943 Cold Cathode Vacuum Gauge Controller 937B Digital Combination Vacuum Gauge Controller
945 Pirani Vacuum Gauge Controller 475 Convectron® Gauge Controller
947 Convection-Enhanced Pirani Vacuum Gauge Controller 475 Convectron® Gauge Controller

Here is a complete index of current indirect vacuum gauges, sensors, transducers, modules, and vacuum controllers from MKS Instruments.