Temperature Testing Capabilities at Keystone Compliance

Keystone Compliance offers temperature and temperature humidity testing in chambers ranging from small bench top to large drive-in systems. Our largest chamber is brand new in 2011 and was specifically oversized in design. With inside dimensions of 12’ wide x 15’ long x 10’ tall and an 8’ x 9’ door, Keystone Compliance is capable of moving, installing, and testing multiple rack assemblies.

Keystone Compliance also operates a large walk in chamber that is especially equipped with twin 30 hp compressors and is capable of temperature transition rates exceeding 15 degrees Celsius per minute.

Temperature Testing Equipment at Keystone Compliance

Keystone Compliance operates state of the art temperature and temperature humidity test chambers. Our investment into our brand new drive in chamber is a reflection of our years of testing experience. We realize that temperature and temperature/humidity tests are the longest running tests in your testing program and we understand the importance of reliability of environmental chambers. No one ever wants to have a test chamber malfunction on the 29th day of a 30 day test program. With our investment into new and up to date equipment, Keystone Compliance has done everything possible to reduce the risk to your test program.

Keystone Compliance operates a number of different temperature and temperature/humidity test chambers. Chambers range in size from small bench top to large drive in systems. Temperature capabilities range from -200 to +200 degrees Celsius.

Keystone Compliance is capable of building customized test chambers as needed to accomplish any environmental test parameters.

Temperature Testing Overview

Temperature testing, per MIL-STD 810 Methods 501.4, 502.4 and 503.4, tests an item’s ability to operate in extreme conditions. The testing can occur at a constant temperature exposure or a cyclic temperature exposure

Constant temperature exposure

For constant temperature exposure, the test item is soaked until its temperature has stabilized and the test temperature is maintained for at least two hours following stabilization.

Cyclic Temperature Exposure

Cyclic temperature exposure has two procedures:

Procedure I – Storage. MIL-STD 810 states that the number of cycles for the storage test is set at a minimum of seven to coincide with the one percent frequency of occurrence of the hours of extreme temperatures during the most severe month in an average year at the most severe location. (The maximum temperature occurs for approximately one hour in each cycle.) When considering extended storage, critical materials, or materials determined to be very sensitive to high temperature, increase the number of cycles to assure the design requirements are met.

Procedure II – Operation. MIL-STD 810 states that the minimum number of cycles for the operational exposure test is three. This number is normally sufficient for the test item to reach its maximum response temperature. A maximum of seven cycles is suggested when repeated temperature response is difficult to obtain.

Temperature Testing Specifications

  • AREMA Section 11.5.1 Temperature
  • EN 50155 Section 2.1 Ambient Temperature
  • EN 60068-2-1 Cold Temperature
  • EN 60068-2-2 Dry Heat
  • EN 60068-2-30 Damp Heat
  • MIL-STD-202 Method 103 Humidity (steady state)
  • MIL-STD-202 Method 106 Moisture Resistance
  • MIL-STD-202 Method 108 Life (at elevated ambient temperature)
  • MIL-STD-810 Method 501.4 High Temperature
  • MIL-STD-810 Method 502.4 Low Temperature
  • MIL-STD-810 Method 503.4 Temperature Shock
  • MIL-STD-810 Method 507.4 Humidity
  • MIL-STD-883 Method 1004 Moisture Resistance
  • MIL-STD-883 Method 1005 Steady State Life Test/li>
  • MIL-STD-883 Method 1006 Intermittent Life Test/li>
  • MIL-STD-883 Method 1007 Agree Life Test
  • MIL-STD-883 Method 1008 Stabilization Bake
  • MIL-STD-883 Method 1010 Temperature Cycling/li>
  • MIL-STD-883 Method 1012 Thermal Characteristics Tests/li>
  • MIL-STD-883 Method 1013 Dew Point Test
  • MIL-STD-1344 Method 1002 Humidity
  • MIL-STD-1344 Method 1003 Temperature Cycling
  • MIL-STD-1344 Method 1005 Temperature Life
  • RTCA-DO 160 Section 5 Temperature Variation
  • RTCA-DO 160 Section 6 Humidity