Hardware Reference
In-Depth Information
An IR thermometer works by capturing the infrared energy naturally emitted from all ob-
jects warmer than absolute zero (0° Kelvin). Infrared energy is a part of the electromag-
netic spectrum with a frequency below that of visible light, which means it is invisible to
the human eye. Infrared wavelengths are between 0.7 microns and 1,000 microns (milli-
onthsofameter),althoughinfraredthermometerstypicallymeasureradiationintherange
0.7-14 microns.
Because IR thermometers can measure the temperature of objects without touching them,
they are ideal for measuring chip temperatures in a running system—especially the tem-
perature of the CPU heatsink. By merely pointing the device at the top of the CPU and
pulling the trigger, you can get a very accurate measurement in about 1 second. To enable
more accuracy in positioning, many IR thermometers incorporate a laser pointer, which
is used to aim the device. IR thermometers like the MiniTemp series are available from
companies like Raytek (
www.raytek.com
)
.
Large Claw-Type Parts Grabber
One of the more useful tools in my toolbox is a large claw-type parts grabber, normally
sold in stores that carry automotive tools. Having one of these around has saved many
hours of frustration digging back into a system or behind a desk for a loose or dropped
screw.
Preventive Maintenance
Preventive maintenance is the key to obtaining years of trouble-free service from your
computersystem.Aproperlyadministeredpreventivemaintenanceprogrampaysforitself
