For high-temperature furnaces with a volume greater than 0.15, the size and shape of the temperature measurement frame are determined based on the size of the temperature measurement area. 9 temperature measurement points are recognized, and the extension direction from the temperature control thermocouple measurement end does not exceed 500mm as the monitoring point, and the other 8 The temperature measurement points are respectively placed on the eight end corners of the temperature measurement area. The temperature measurement points of the high-temperature furnace are selected based on the "working area size" as the design parameter for the high-temperature furnace. The working area size provided by the manufacturer or customer is used as the measurement parameter. temperature area.
1. In actual testing, if the customer only uses a certain temperature value during actual operation, this value is generally used as the nominal temperature. For example, 550°C is generally used as the nominal temperature for ash experiments in flour processing, and 950°C is often used as the nominal temperature in cement work. In school, the nominal temperature must be approved by the customer.
2. When selecting the nominal temperature of the high-temperature furnace, you should also check whether the wire connecting the high-temperature furnace and the temperature-control thermocouple is a compensation wire. In practical applications, it is often the case that the high-temperature furnace temperature controller and the thermocouple are connected with ordinary wires. Because the high-temperature furnace generally operates at a relatively high temperature, the end temperature of the temperature-controlled thermocouple is closer to the furnace, causing the temperature-controlled thermocouple to be connected. The final temperature will be dozens of degrees Celsius higher than the ambient temperature. If ordinary wires are used instead of compensation wires, it will greatly affect the temperature control effect of the box-type resistance furnace.
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