The 531 Thermocouple Gauge Tube is the time-proven, lowcost solution for continuous aand accurate indication of rough vacuum pressure from 1 x 10-3 to 2.0 Torr (1 x 10-3 mbar to 2.7 mbar). Featuring rugged dependability and consistent operation unaffected by mounting orientation. The 536 Thermocouple Gauge Tube is a welded 304 stainless steel version of the 531 with an additional baffle that greatly extends the sensor life when exposed to condensable gases in demanding applications. It provides a continuous and repeatable indication of pressures from 1 x 10-3 Torr to 2 Torr (1 x 10-3 mbar to 2.7 mbar). The thermocouple and heater are noble metal to minimize any possible affect of contaminants on gauge performance. Both gauges are offered in a variety of mounting options and are easily interfaced with Agilent’s XGS-600 gauge controller.