Introduction - Presys TA-1200PLAB Technical Manual

PRESYS
 Instruments

1 - Introduction

The TA-1200PLAB Calibration Furnace is state-of-the-art in the manufacture and
performance of high temperature furnaces for calibration of thermocouples.
Its design privileges fundamental technical characteristics in temperature
measurement and which are usually the predominant sources of uncertainty in a
calibration. Thus it has been designed and tested according to international standards to
perfect the following characteristics:
I. Low axial and radial gradients due to the use of differentiated heaters distributed
along the thermal well in order to minimize losses at the ends of the insert and to
extend the temperature constant region called the measurement zone.
II. High immersion of the sensors to be compared - it has an insert with 250 mm of
immersion in the conductive part and about 70 mm in the insulation part, making
about 320 mm of total immersion of the sensors, which minimizes heat losses by
conduction the rod.
III. High thermal stability or thermal inertia - The 400 mm long insert has a large mass
volume and stabilizes any temperature fluctuation due to insertion or removal of the
sensor in the insert.
The entire calibrator is enclosed in a thermal shield for operator and laboratory
protection from the high temperatures generated. Thus in an eventual blackout of energy
the cooling of the furnace happens naturally and surely.
Temperature Advanced Calibrator TA-1200PLAB generates temperature in the
insert in order to calibrate thermocouples. Besides providing high accuracy temperature
values, it also allows the measurement of signals generated by the thermo-element which
is being calibrated. This is possible due to an embedded calibrator specific for this type of
signal. Thus, they incorporate the functions of dry block, standard thermometer and
calibrator for TC.
TA-1200PLAB
TA-1200PLAB
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