A good user interface
and integrated solutions offer you time
savings 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.
Dry-block well -
optimized for accuracy
Dual-zone heating block: Central-control
This type of heating block is
constructed in two zones, with
central-control of the zones. The main
zone (lower zone) ensures optimum heat
dissipation throughout the entire block.
The upper zone compensates for the heat
loss from the top of the block and from
the sensor-under-test, and is optimized
to give a good homogeneity in the block.
The central-control dual-zone heating
blocks are used in the JOFRA temperature
calibrators
ITC-320 and ITC-650. |
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