501 and 519 temperature control meters are installed on the panel of the control box, and their matching temperature sensors are respectively installed at the hot air outlet of the hot blast stove and the air inlet of the oven. 501 temperature control meter only displays the outlet temperature of the hot blast stove (T < 500 ℃), and the set temperature at the air inlet of the drying oven is t = 70 ℃, When the temperature is higher or lower, the flow of natural gas will be controlled by the actuator to reach the set temperature<br>
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