Testing your Products using a Temperature Chamber
by Peter Brown
Should you need your product to be reliable under any
temperature conditions, you will need to test them using a
temperature chamber. In the United States there are quite a
few manufacturers of this type of equipment.
Chamber manufacturers produce other types of chambers beside
just temperature chambers. These will included: Liquid
Carbon Dioxide Cooled Chambers Temperature Humidity
Chambers Altitude Chambers Salt Spray Chambers
Temperature Plates Liquid Nitrogen Cooled Temperature
Chambers AGREE Temperature Chambers Space Simulation
Chambers HALT Test Chambers Industrial Ovens
Here are some well known brands of temperature chambers:
Thermotron Tenney Environmental Associated Environmental
Blue M Espec Bemco Lunaire Despatch TestEquity
Sigma Systems ESS Cincinnati Sub Zero Delta Design
Ransco Russells
A wide temperature range of -70C to +170C can be achieved by
a temperature chamber provided it includes a cascade
compressor system (two compressors). A range of -35C to
+170C is common for a single stage compressor system.
Another method to cool Temperature Chambers is CO2 or LN2.
Normally a temperature range of -70C to +170C can be
obtained by using these cooling methods.
Temperature cycling is one of the most common applications
for a temperature chamber. This is accomplished by changing
the temperature of the product being tested over a period of
time. Normally temperature rate of change is specified in
degrees C per minute of the air temperature around the
product. Most chambers have a temperature ramp rate (both up
and down) of about 2c/min, but ramp rates of up to 15C and
beyond can be achieved using larger compressors or CO2/LN2
boost.
To facilitate automatic temperature cycling for a
temperature chamber, a programmable controller will be
required. The Watlow F4 controller is a good example of
this type of controller. Often chamber manufacturers design
their own controllers as well. RS-232 and IEEE-488
Interfaces optional for most controllers.
Options offered for temperature chambers are normally the
following: Window in the Door Water or air cooled
compressors Circular temperature chart recorders
Feed-Through Ports Dryer package to remove moist Castors
for easy movement of the chamber - 15668
Certified Refurbished
(http://www.lre.com/test/test-chambers-used/test-chambers-used.htm)
Temperature Chambers are a good alternative to new chambers
since you can save significantly while enjoying the benefits
of a warranty and money back guarantee. Other
(http://www.lre.com/test/lre-mainpage/lre-mainpage.asp)
Environmental Test Chambers besides temperature chambers are
also available.
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New Unique Article!
Title: Testing your Products using a Temperature Chamber
Author: Peter Brown
Email: simon@lre.com
Keywords: temperature chambers,environmental chambers,test laboratory,electronic manufacturing,military hardware,product reliability,quality control,product manufacture,electronics,science,environmental testing,computer hardware,manufacturing,manufacturing,industrial
Word Count: 344
Category: Computers:Hardware
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