To manufacture glass bottles for the food and beverage industries, the result must meet certain standards in order to be used. 

Diagram: https://www.o-i.com/our-story/how-glass-bottles-and-jars-are-made/ 

Sensors are required to monitor temperature at the following stages of manufacturing:

Furnace

Ingredients are heated to approx. 1550C to create molten glass.

Refiner

The molten glass cools to about 1250C.

Forehearth

Glass brought to a uniform temperature to prepare for cutting into gobs.

Forming Machine

Glass continues cooling to approx. 700C in order to shape and expand the gob into the end result.

Annealing

Glass bottles are reheated to about 565C and then cooled slowly to 150C.

Monitoring of temperatures at each stage of this process is crucial to produce glass bottles that meet industry standards.

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