HPS(TM) cold cathode gauges measure vacuum pressure from medium to ultrahigh vacuum. Brochure features information on the HPS(TM) Series 943 digital controller, the Series 941 analog controller, the Series 421 cold cathode sensor, and the Series 423 I-Mag(reg) cold cathode sensor. Both controllers operate with either sensor. In addition, the literature covers applications, specifications, operating principles, and product dimensions.
MKS Instruments, HPS Div., 5330 Sterling Dr., Boulder, CO 80301, FAX (303) 442-6880.