Job Description:

• 1) Tests temperature of glass melting furnaces and regulates gas and air supply to maintain specified temperature, using any of following methods: Measures temperature of furnace sections, using optical pyrometer.

• 2) Sights through opening of pyrometer into furnace opening and turns sleeve dial on pyrometer until color of wire filament matches luminosity of flames.

• 3) Reads dial indicator to obtain millivolt reading and compares reading with temperature chart to determine if temperature is in accordance with specifications.

• 4) Turns valves to adjust gas-to-air ratio and increase or decrease temperature within refractory.

• 5) Computes and plots averages of glass temperatures on graph paper from temperature charts, using pencil and template to draw lines and circles.

• 6) Interprets graph to determine need for temperature adjustment.

• 7) Turns valve to increase or decrease air and gas supply into burners.

• 8) Tests gas-to-air ratio of burned atmosphere, using gas analyzer.

• 9) Inserts hose of gas analyzer into furnace and starts suction pump to withdraw sample of burned atmosphere.

• 10) Observes dial indicator on analyzer to determine if gas-to-air ratio is in accordance with specifications.

• 11) Turns valve to adjust gas-to-air ratio and control heat of furnace.

• 12) Records tests, temperatures, and adjustments in log.