When the need arises for measuring temperature in
various industrial situations, most engineers think in terms of expensive electronic
temperature measuring equipment. In many cases, though, you can do the job with less
costly and much simpler methods. When the need is only for an indication that a pre
determined temperature has or has not been reached, heat-sensitive materials in the form
of crayons, paints, pellets, or labels can do the job readily, inexpensively, and
accurately enough for most industrial applications.
FABRIKA makes available in India temperature
indicating labels. These are available in reversible & irreversible types. Select
one for your application.
Principle:- These heat-sensitive,
fusible materials consist of crystalline solids. When heated, a temperature will be
reached in which the solids change sharply to a liquid. The melting point is reproducible
and is virtually unaffected by ambient conditions that may cause errors with other
temperature-sensing methods. For example, electrical means of measuring temperatures often
function erratically in the presence of static electricity, electrical "noise"
or ionized air near electrical equipment. |
Important Features:- |
 |
The
temperature indications obtained are unquestionably those of the surface being
tested. |
|
The
temperature sensitive material is applied directly to the surface, and therefore changes
state in direct response to that surface, and only that surface. |
|
No delay
in obtaining a signal. As it has an extremely small mass, it attains rapid equilibrium
with the surface. |
|
With the
use of fusible temperature indicators, there is no conduction of heat away from the
surface. |
|
No
dependence on the duration of heating. |
|
Simple
and Economical. |
|
Tolerance
+/- 10C |
|
Self
adhesive |
|
Resistant to water, oil and many
other chemicals. |
|
