# Development of a Pyrometer That Measures the True Temperature Field of the Two-Dimensional Array
## 6 Actual Measurement Experiment  
The two-dimensional array pyrometer designed in this work is used to carry out the actual measurement experiment on a high-temperature furnace. The temperature of the high-temperature furnace is adjusted to 1273 K. The scene of the actual measurement experiment is shown in Figure 13. The data of the two-dimensional array target (high-temperature furnace) are composed of the data of a total of 100 target points with ten longitudinal axes (target1-target10) at ten time points. The ten time points (time1-time10) are 49.46, 49.49, 49.53, 49.58, 49.61, 49.65, 49.68, 49.71, 49.75 and 49.81 s after the start of the measurement. The energy equivalent measured by the pyrometer is shown in Figure 14. The true temperature is calculated by the software part, and the true temperature measurement results of the two-dimensional array target are shown in Table 2. The true temperature operation time of the two-dimensional array pyrometer is shown in Table 3.  
Figure 14: _Cont._  
Figure 13: The actual measurement experiment.  
Figure 14: The energy equivalent of the high-temperature furnace (**a**–**j**), respectively, for target1–target10.  
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline  & \multicolumn{10}{c}{**True Temperature of Each Target/K**} \\ \hline  & **Target** & **Target** & **Target** & **Target** & **Target** & **Target** & **Target** & **Target** & **Target** & **Target** & **Target** \\  & **1** & **2** & **3** & **4** & **5** & **6** & **7** & **8** & **9** & **10** \\ \hline Time1 & no & no & no & no & no & no & no & no & no & no & no \\  & value & value & value & value & value & value & value & value & value & value \\ Time2 & no & no & no & no & 1136.6 & 1174.1 & 1150.1 & no & no & no \\  & value & value & value & value & & value & value & value & value \\ Time3 & no & no & no & 1185.3 & 1264.9 & 1264.1 & 1231.1 & 1186.8 & no & no \\  & value & value & value & & & & & & & \\ Time4 & no & no & no & 1197.5 & 1256.6 & 1267.7 & 1272.8 & 1180.4 & no & no \\  & value & value & value & & & & & & & \\ Time5 & no & no & 1151.6 & 1248.7 & 1285.4 & 1271.1 & 1281.8 & 1243.5 & 1155.6 & no \\  & value & value & & & & & & & & \\ Time6 & no & no & 1167.6 & 1189.8 & 1281.2 & 1281.1 & 1273.2 & 1212.0 & 1162.2 & no \\  & value & value & & & & & & & & \\ Time7 & no & no & no & 1172.7 & 1271.8 & 1277.7 & 1265.3 & 1190.2 & value & value \\ Time8 & no & no & no & 1157.2 & 1188.3 & 1166.9 & no & no & no \\  & value & value & value & value & & & & & & \\ Time9 & no & no & no & no & no & no & no & no & no \\  & value & value & value & value & value & value & value & value & value \\ Time10 & no & no & no & no & no & no & no & no & no \\  & value & value & value & value & value & value & value & value & value \\ \hline \hline \end{tabular}
\end{table}
Table 2: The true temperature measurement results.  
Table 2 shows that the uncertainty of the two-dimensional array pyrometer can reach 1.43%.  
In this paper, the software data processing part adopts multi-threaded parallel processing. The 100 true temperature operation processes are carried out at the same time. Therefore, the maximum value of the operation time in Table 3 is the total time required for the true temperature operation process of the two-dimensional array pyrometer, which is 304.769 ms, while the total true temperature operation time of the 100 target points with the single-threaded method is 1330.220 ms. The time used by the multi-threaded method is 77% less than that used by the single-threaded method. Additionally, the two-dimensional array pyrometer can directly scan and measure the true temperature of the two-dimensional array target without complicated positioning operations, which greatly simplifies the operation and improves the practicability of the two-dimensional array pyrometer.