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7 Vacuum Gauges. 1. 7.1 Introduction . 7.6 Pirani and Thermocouple Gauges . 7.9 Penning (Cold Cathode) Ionization Gauge . Envelope connected to the Vacuum System. Heated Filament. Thermocouple Sensor. - TC Sensor on Heated Filament. - Reference Temperature is Outside Gauge PIRANI VACUUM GAUGE. The Pirani Gauge is a type of Thermal Conductivity Gauge. The Pirani gauge consists of a metal filament (usually platinum) suspended in Many gauges are available to measure vacuum within a vacuum furnace chamber. 7 - people.rit.edu/vwlsps/LabTech/Gauges.pdf (section 7.4). (see figure 10-2 below) which includes the vacuum gauges; Bourdon, Capacitance Manometer, Thermocouple, Convection. Enhanced Pi rani, Hot Cathode IonizationWith Bourdon gauges it is possible to roughly determine pressures between 10 mbar (7.5 Torr) and atmospheric pressure. Capsule Vacuum Gauge. This vacuum gauge PDF | Vacuum gauges for use in accelerators have to cover about 17 decades of pressure, from 10 –12 Pa to 10 5 Pa. In this article we describe the.