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INFRA-RED THERMOMETER |
Model DT8500 |
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ONLY £ 36.00 each exc VAT & P+P Our Model DT-8500 Infra-Red thermometers are excellent value for money non contact "gun type" or "pocket" version thermometers. Although we do not have an extensive range, this fixed emmisivity thermometer is a cost effective, easy to use, rugged thermometer, designed for quick checks on your control applications. At the price you cannot afford to be without one ! |
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What is Emissivity?
Emissivity of a material is a measure of the ability of the material to emit
infra red rays. It turns out that a matt black body is the best reflector
of the rays with varying other surfaces having different abilities. The bottom
line is that different surfaces have different emissivity ratios. As a result
when using infra red thermometers the emissivity setting can affect the accuracy
of measurement. There are therefore two types of infra red thermometers, those
with fixed emissivity settings like ours and then a more expensive range where
you can match the thermometers emissivity setting to suit the surface you
will be measuring. There are tables online that give the emissivity values
of most common surfaces.
Experience has shown that a good average emissivity setting is 0.95 that will
suit most general applications for general use. Our two models have this setting.
If the purpose of your task is to get a reasonably accurate measurement then
this is fine. If however you are after the most accurate measurement to the
last degree then look for thermometers with adjustable emissivity settings.
Our infra red thermometers are suited to rough and ready measurement intended
to give a good idea of temperature but not laboratory type measurements. If
for example you want to measure the temperature of a silver shaft a way around
this problem is to simply paint a section black. Problem solved. Hope this
helped.
| Phone | +44 (0)1244 539295 | |
| Fax | +44 (0)1244 533514 | |
| Contact us |