EN 993的这一部分规定了在1500至1800℃的温度范围内用于确定耐火材料的高温测量锥体当量（耐火性）的标准系列高温测量参考锥的特性。指定的高温测量参考锥适用于EN 993-12中描述的程序，不包括测定1500和1800°C

This part of EN 993 specifies the characteristics of a standard series of pyrometric reference cones, which are used for determining the pyrometric cone equivalent (refractoriness) of refractory materials, over the temperature range 1500 to 1800°C. The pyrometric reference cones specified are suitable for use in the procedure described in EN 993-12, excluding determination of 1500 and 1800°C.