Cryogenic Hoses: Coolant delivery hoses are used to connect your temperature chamber or thermal platform to your coolant source, be it a bulk system, a dewar, or a high pressure cylinder. Sigma offers Vacuum jacketed and Armored hoses for L-N2, as well as hoses for L-C02. Getting the right hose, with the right fittings, in the right size, with the right insulation, with the proper safety facilities, is essential for a successful and safe operation. Sigma hoses come with the correct fittings for both the coolant source and the temperature chamber or platform. L-N2 hoses include a Safety Pressure Relief Valve.

Cryogenic Hose & Dewar Accessories: Coolant delivery hoses are used to connect your temperature chamber or thermal platform to your coolant source, be it a bulk system, a dewar, or a high pressure cylinder. Sigma offers Vacuum jacketed and Armored hoses for L-N2, as well as hoses for L-C02. Getting the right hose, with the right fittings, in the right size, with the right insulation, with the proper safety facilities, is essential for a successful and safe operation. Sigma hoses come with the correct fittings for both the coolant source and the temperature chamber or platform. L-N2 hoses include a Safety Pressure Relief Valve.

Redundant cryogenic coolant cut-off valve: The perfect companion for a Sigma Precision Failsafe is a redundant cryogenic coolant cut off valve.  In the event of a Failsafe over or under temperature trigger, the redundant valve closes to shut off the flow of cryogenic coolant.  This option is a must to protect from the possibility of a stuck open cryogenic valve during critical or unattended tests.

Rack mount for smaller and custom chambers: Rack mounting is an option for all small Sigma chambers.  Models M10, M18, M24M, M26, M35, M50M, M52, and M59 are all available with flanges for mounting in standard 19" or 24" racks as appropriate.

Extended Temperature Option: Standard temperature range for Sigma Systems test chambers is -100°C to +200°C.   Thermal chambers ordered with the standard High Temp Option are rated from -100°C to +300°C.  Low temperature options that will allow operation as low as -185°C and high temperature options that will allow operation at +350°C, or above, are available.   These extended range temperature chambers are always designed for your specific requirements.   Contact your Sigma Systems representative or sales engineer for more information.

Spare coolant solenoid valves and injectors: Sigma uses custom designed valves and injectors to provide your chamber with extremely high performance, quiet operation, and long life. However, Valves are "wear" items and will eventually wear out. You can purchase spare coolant solenoid valves and injectors to avoid down time that could occur with a valve failure. Valves are available as "Built-up" valves that are pre-assembled, insulated, and ready to install, or as simply valves.

Dry Nitrogen Purge Systems: Dry Nitrogen purge systems are available for any chamber.  Dry nitrogen purging is an outstanding way of eliminating moisture and/or oxygen from the test environment.  Even Nitrogen cooled chambers can benefit from a dry Nitrogen purge as the purge can be used even while the chamber is heating.  The purge can be provisioned for manual, door switch, or C4 programmable controller control.

Air Cooled Chambers: Chambers that will be operated above ambient, and that do not require fast ramp down rates, can be supplied with air cooling slots for cooling by exchange of ambient air.   This option eliminates the need for refrigeration or cryogenic coolants, but does result in more room for heating than a cryogenically cooled model.