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M256 Temperature Chamber

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The Model M256 is available in 2 basic configurations, cryogenic and mechanically cooled. A castered stand comes with all 256 chambers.

The M256 is a performance cryogenic chamber with high temperature ramp rates. 

The M256M and M256MM are mechanically cooled chambers that are available with a number of compressor options depending on your cooling rate requirements.

Standard with a Model C controller, Model C4 programmable controller is optional

Models Description
M256 Cryogenic with L-CO2 or L-N2
M256M Single Stage Refrigerated system
M256MM Cascade Refrigerated system

Single Zone Shock Chamber

The M256 chamber can be configured as a high performance single zone shock chamber that meet the requirements of MIL SPEC 202, Method 107 testing, and is able to achieve -170°C.  Configured with the optional Shock package, the chamber features a top mounted C4 controller and maintains a very compact footprint, and is supplied with hinged lift off door.  Click here to learn more
Chamber Size
  Workspace Exterior
Model Volume Feet3
(Liters)		 H x W x D
 Inches (Centimeters)		 H x W x D
Inches (Centimeters)
M256 5.8
(165)		 25 x 25 x 25
(63.5 x 63.5 x 63.5)		 58.5* x 30 x 39
(148.6* x 76.2 x 99.1) 
M256M
M256MM
* add 6.5" (16.5 cm) to height for top mounted controller
Operating Ranges °C
High Limit Low Limit
M256 200
[+400 High temp option]		 –65 L–CO2
–100 L–N2
–185 option
M256M 200
[+300 High temp option]		 –30
–65  L2 –CO2 Boost option
–100  L–N2 Boost option
M256MM 200
[+300 High temp option]		 –60
–65  L2 –CO2 Boost option
–100  L–N2 Boost option
Performance °C
(Center 70% of Range)
Cooling rate
°C per minute		 Heating rate
°C per minute
M256 19 §   13 §
M256M 2 §
20 (with Boost Option)
M256MM 2.2 §
20 (with Boost Option)		 13 §

§  Cooling Rate

Cryogenic rates are highly dependent upon coolant type
(L–N2 or L–C02), pressure, and quality.  For more information download or request a copy of our brochure on Cryogenic Cooling

Mechanical refrigeration (not available on all chambers) rates are dependant on refrigeration system chosen and other factors.
Note: Cryogenic boost can be added to mechanically refrigerated systems to speed transition temperatures

    Heating Rate

Temperatures shown are for typical heaters. 
Faster and slower rates available.

 

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