Resistance Thermometry is based on the principle of change of
resistance of a conductor due to a change in it's temperature. The temperature
sensitive bulb (RTD) consists of a compactly
wound, strain free, rigidly supported filament of pure platinum wire. The winding when
subjected to the temperature to be measured, changes its resistance. This change is
accurately measured by a suitable resistance measuring instrument, connected to the
resistance thermometer. The resistance value is interpreted directly as a measure of
temperature.
Resistance Temperature
Detectors ( RTD
) are the most accurate, stable & sensitive thermometers available today and
under the latest International Temperature Scale - 90, protocol (ITS - 90), They are the
recommended as standard for comparison checking of all other types of
thermometers, functioning between the range - 260°C.
to + 960°
C.
" STABLERES "
Resistance Thermometer Assemblies are manufactured by FABRIKA from Platinum bulbs with a
nominal resistance value of 100 Ohms at 0°
C or in some special cases with 50 Ohms windings. Elements with 200 Ohms , 500 Ohms or
1000 Ohms windings are also offered for special high sensitivity applications.
The Platinum RTD bulbs are completely
sealed, so that no foreign matter can reach the measuring wire element, ensuring long term
stability. The RTD bulbs are supported, strain
free in closely machined protecting tubes. The sensitive bulbs are packed in an inert
mineral insulation media, which is vibration compacted and sealed against ingress of
impurities. The resultant assemblies are compact, vibration resistant and quick
responding.
FABRIKA, offers the widest
range of Resistance Thermometers in all standard industry sizes, elements and materials.
Complete with installation fittings for screwed, welded, or flange mounting.
WE PROBABLY HAVE A STANDARD
ASSEMBLY, TO MEET ANY SPECIAL REQUIREMENTS.
State of the art Resistance
Thermometers, for in situ mounting in Bearings, Thrust Pads, etc. as protection for large
rotating machinery, with extremely small dimensions and high vibration resistance
properties are our specialty. We can also design and supply high reliability Miniature
Sensors for surface temperature measurements in 3 wire or 4 wire configurations. |
