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Main : Misc Packard Photos :  TEMPERATURE RECORDERS - 2735-A

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SubmitterBigKevMore Photos from BigKev    Last Update2018/7/23 8:24    Tell a friendTell a friend
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This illustration shows the instruments for recording temperatures used on continuous
heat-treating furnaces.
A line is drawn on each of the charts throughout each run and this accurately
records the temperature.
Equipment of this type is used on all heat-treating furnaces, enameling ovens,
paint drying ovens, core ovens and all places where accurate temperature
control is necessary.
This equipment, besides drawing a chart showing the temperature, also automatically
opens and closes either the gas or oil used for firing when the temperature
becomes either too high or low.
They are so accurate, that at temperatures of 1600 F. there is a variation of not
more than plus or minus 5 F.
You would not think much of a hospital where the temperature thermometers used
with the individual patient were not carefully checked by pre-established standards,
based on years of experience. In the Packard heat-treating department, they are
just as careful with the instruments used for recording temperatures as a hospital
superintendent is of the instruments used by his staff of physicians.
There is a crisis period in the heat-treating of every metal. If temperatures
are permitted to go beyond certain limitations, the molecules that m?*;e up this
metal break down, lose their efficiency and become worthless. We leave as little
as possible to human opinion and conjecture. Every batch of material has its own
chart. This accounts for the many numbers found on even the smallest parts.
These charts are filed for reference and constant study. Here, too, your Packard
product is protected to the maximum.

Picture courtesy of Roscoe Stelford

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