Temperature ramp rates vary from chamber to chamber, and are dependent on the thermal mass of the unit under test and on the given temperature. Typical ramp rates range from 1°C/min for walk-in chambers and up to 5°C/min for the smaller chambers. 

 Max Working Space (m) 
Temperature Range (°C) 
Humidity Range (% rh)
High and Low Temperature
(Constant and Cyclic)		 4.2 x 2.5 x 2.5 
 -50 to +70 
  
1.2 x 1.2 x 1.2  
 -70 to +180  
  
High Temperature
(Constant)
 0.54 x 0.47 x 0.54 
 +500
  
High Temperature, high humidity
(Constant and Cyclic)
 4.2 x 2.5 x 2.5
 +70 
 10 to 98
0.91 x 0.91 x 0.91
 +80 
 30 to 98

In addition to these permanent chambers, prefabricated enclosures are available to condition test items within the range of -70°C to +170°C through the use of stand-alone pre-conditioners and liquid nitrogen with the capability to achieve ramp rates of up to 3°C/min.