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M786 (M & MM) Temperature Chambers

Pictures may show optional items
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The M786 chamber is available with cryogenic cooling (M786), mechanical cooling (M786M and M786MM), or a combination cryogenic and mechanical cooling.  All designs come standard with a castered stand.  These chambers are dual access chambers which means they have a hinged front door and a lift-off fixturable rear door which makes it ideal for production and volume testing.

The M786 is a high performance cryogenically cooled chamber with high temperature ramp rates.

The M786M and M786MM are mechanically cooled chambers that are available with a number of compressor configurations depending on your cooling  requirements. A Sigma techincal sales rep can help you determine what configuration best suits your needs. The M786M and M786MM chambers can be configured with cryogenic boost that can speed temperature transition rates when ramp rates above the mechanical cooling rate are needed.

Model C controller is standard
Model C4 programmable controller is optional

Models Description
M786 Cryogenic with L-CO2 or L-N2
M786M Single Stage Refrigerated system
M786MM Cascade Refrigerated system
Chamber Size
  Workspace Exterior
Model Volume Feet3
(Liters)		 H x W x D
 Inches (Centimeters)		 H x W x D
Inches (Centimeters)
M786 27
(765)		 36 x 36 x 35
(91.4 x 91.4 x 91.4)		 69.5* x 51.5 x 41
(176.5* x 130.8 x 104.1)
M786M
M786MM
* add 6.5" (16.5 cm) to height for top mounted controller
Operating Ranges °C
High Limit Low Limit
M786 200
(+300) 		 –65 L–CO2
–100 L–N2
–175 option
M786M 200
(+300) 		 –40
–65  L–CO2 Boost option
–100  L–N2 Boost option
M786MM 200
(+300) 		 –80
–100  L–N2 Boost option
Performance °C
(Center 70% of Range)
Cooling rate
°C per minute		 Heating rate
°C per minute
M786 13 – 21 §   10 – 30 §
M786M 1.4 – 6 §
18 (with Boost Option)		 10.8 – 21 §
M786MM 1.8 – 4.9 §
18 (with Boost Option)		 18 (Refer off) §

§  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.

Why are Sigma Chambers Superior?
(What Sigma quality & engineering means to you)
Chamber options and accessories
How to Select the Correct Size Chamber
Chambers vs Platforms
Cryogenic vs Mechanical Cooling
Controllers and failsafes
 

 

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