Page 39 - Glass Machinery Plants & Accessories no. 2-2020

glass thermocouples
are still required.

VIRTUAL NIR
TEMPERATURE
INFORMATION
Operating tem-
peratures can be
monitored, but also
other aspects of
furnace operations
such as bubbling
can be observed as
well.
The virtual NIR
temperature infor-
mation correlates
well with furnace
Figure 7 – A-SENS NIR Camera Image with Temperature Identification and crown tempera-
Virtual TC’s. The virtual NIR temperature information correlates well with fur- tures.
nace crown temperatures.Location in Front of the Furnace As we can see in
Figure 8, we can
also select lines or
different surfaces to
see the temperature
not only at selected
points.
In the left-hand
view of Figure 9,
the batch is in front
of the critical area
from the left side
of the melter, with
a lower glass tem-
perature of 1545˚C.
Therefore, the num-
ber of 60 seeds per
100 grams of glass
is high. In the right-
hand view of Figure
8, the batch is in
Figure 8 - Selecting temperature lines and areas within the Image Browser
front of the critical
reference Figure 7. The user also
can select certain areas or lines
besides points.
When fully utilized, the use of
crown or atmospheric thermo-
couples, and the expensive plati-
num incorporated therein can
be reduced. Of course some in-

Figure 9 – Example of Glass
Defect Correlation to Batch
Position and Temperature

glass machinery plants & accessories 2/2020 37