Conflat Vacuum Fittings Bakeout Surface Mount K-Type Thermocouple, Response Times < 0.15 Seconds

These self-adhering mount K-Type thermocouples provide a rapid response (less than 0.15 seconds) and can be operated up to temperatures of 260°C (500°F) or can be cemented in place for use at temperatures up to 315°C (600°F). They use a polyimide and fiberglass junction insulation along with a fiberglass-insulated lead wire and require a patch length 1" by 0.375" width. It is important that the thermocouple be securely connected to the part being heated at all times so that good thermal contact in achieved during the complete bakeout cycle. Caution, if the thermocouple loses contact with the fitting, the temperature controller will measure a much lower temperature of the room air. This will result in a dangerously high run away heating of the vacuum-flanged fitting. We recommend that these thermocouples be directly adhered to the outer surface of the flange with the band nozzle heater installed over the thermocouple. This procedure will clamp the thermocouple onto the heated conflat flange.

Information On Our Plug & Play PID Heater Control Systems
Our single zone PID heater control systems (P1011283) and (P107361) are designed to accurately measure and control the temperature of our conflat flange ThinBand nozzle heaters, as well as Ideal Vacuum Cube heater plates, and other vacuum heater and chiller units in real time. These heater control systems can operate at 120 or 240VAC with single or multiple heater loads up to 20A (2400W@120VAC, 4800W@240VAC).

Information On Our Conflat Nozzle Type Band Heaters
These conflat 2.75 (2-3/4) inch nozzle heaters are designed to be tightened around the outer surface of the conflat flange. The thermal energy from the bakeout process helps desorb layers of water vapor in vacuum chambers allowing the molecular water vapor to be pumped away leading to a much quicker pump down time for ultra-high vacuum (UHV) applications. These conflat flange bakeout nozzle heaters are a low-cost solution to more expensive CF heating jackets. These conflat thin band nozzle heaters have a 2.75-inch inner diameter by 1.0-inch width, operate on 110 to 120 VAC input power, consume 300 Watts of power. and have 18-inch flying FFG Leads. They are tightened on to the conflat flange with an integrated socket head cap screw hardware component. Conflat ultra-high vacuum metal-to-metal seal with copper gasket and stainless-steel conflat flanges allows for baking of temperatures up to 450 °C. (maximum bakeout temperature can be limited by the choice of gasket material).

These nozzle heaters work directly with our heating and temperature control units which incorporate temperature measurement input for a thermocouple. These items work together to make a complete CF heating and temperature control solution. Caution - it is important to understand the risk of being burned by heated vacuum flanges. The bakeout temperature of conflat flanges and fittings can reach 450 degrees Celsius! The vacuum system operator needs to be trained correctly on how to safely work around these very hot surfaces.

The links below will take you to our selection of CF heaters, Cube heater plates and thermocouples (including feedthrough types).

CF Flange Bakeout Heaters
Ideal Vacuum Cube Heater Plates
K Type Thermocouples