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Oven temperature uniformity is important to ensure uniform heating of the product.

Uniformity is the greatest deviation, in degrees, between the lowest and highest temperature points within the work area. For example, it is important to note that ±5°F represents an actual difference of 10°F (5.5°C).

Many factors influence uniformity:

  • Controller calibration
  • Sensor calibration
  • Sensor placement within the work area
  • Oven operating temperature (higher temperature/greater variables)
  • Air circulation (the greater the air circulation, the better the uniformity)
  • Placement of the product within the work area
  • Product geometry
  • Airflow pattern
  • Heat loss through walls
  • Metal-to-metal conduction

It is important to take all of these variables into consideration and to utilize a 10-point thermocouple test to ensure that the specified uniformity is obtained for the application. Although this 10-point test is not always included with the oven purchase, it is recommended and usually available for an additional cost. Some applications such as paint or resin curing require a temperature uniformity of ±10°F (±5.5°C). Many drying or preheating processes only require a uniformity of ±20°F (±11°C). Some technical processes need a uniformity of ±5°F (±2.7°C). Knowing your temperature uniformity requirements will help with oven selection.

Contact a Precision Quincy representative today at (302) 602-8738 or sales@pqovens.com for more information on temperature uniformity and oven selection. Need help in the selection process? Call, email or fill out this quick form and a Precision Quincy representative will get back to you. 

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