Staged Heating Sigma chambers have staged heating for extremely fast ramp rates and precise control near the set point. Failsafe A ll Sigma ovens are supplied with an adjustable independent bi-metallic overtemp power lockout system. This provide highly reliable protection against overtemp conditions. Also see Sigma literature on mechanically refrigerated chambers for information on models using mechanical refrigeration with expendable gas boost. Cabling or plumbing may be run through this opening providing a reasonable area remains open for exhaust.
Additional apertures are available as options.
Conversion kits are available to convert any sigma chamber from one type of coolant to another. Also, more than one valve and injector can be provided for coolant versatility. They feature extremely rapid cycling rates, extremely low gradients, flexible programming capabilities, and rugged construction. Extended temperature ranges are available. The chambers are cooled by L-N 2 .