A good user interface
and integrated solutions offer you
timesavings and easy handling of even
difficult calibration jobs. But the
quality of your temperature calibration
measurements still depends on the
quality of the temperature source.
The temperature block must be very
stable and at the same time have a good
temperature homogeneity. This is very
important because the sensors-under-test
may have different measurement zones. As
the sensor-under-test will also act as a
thermal load in the block during the
calibration, it is important that the
block keeps the good homogeneity even
with multiple numbers of probes and with
large probes.
The new dual-zone design of the heating
block is the most innovative step taken
to solve the thermal problems mentioned
above. AMETEK has developed two
different versions of the dual-zone
principle - the ACTIVE-CONTROL and the
CENTRAL-CONTROL versions. Both versions
eliminate the need for insulation of the
sensors-under-test and make it possible
to calibrate liquid filled and other
mechanical sensors.
State-of-the-art
well design - Optimized for accuracy
Dual-zone heating block: Active-control
The heating block is constructed in two
zones, with SEPARATE active-control of
each zone. The homogeneity in the lower
part of the block is close to that of a
laboratory liquid bath. The lower zone
controls the calibration temperature.
The upper zone compensates for heat loss
through the sensor-under-test and from
the top of the block, and ensures a good
homogeneity independent of the load.
The active-control dual-zone heating
blocks are used in the JOFRA temperature
calibrators
ATC-156, ATC-157, ATC-320 and ATC-650. |
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