JJF-噪声变送器电流输出特性校准规范试验验证报告

PAGEPAGE1《噪声变送器电流输出特性校准规范》实验验证报告《噪声变送器电流输出特性校准规范》起草小组2024.7.6《噪声变送器电流输出特性校准规范》实验报告基本情况1.1实验时间和地点实验时间为2024年3月~6月，实验地点为辽宁省计量科学研究院声学振动室。实验温度为20.5C~23.2C，湿度为34%RH~56%RH，气压为99.5kPa~101.6kPa1.2实验方法本实验采用《噪声变送器电流输出特性校准规范》（征求意见稿）中描述的方法。1.3实验用标准器和配套设备表1.实验室的计量标准器和配套设备名称型号编号制造单位声校准器42313028117丹麦B&K公司活塞发声器42283234890丹麦B&K公司前置放大器26692783832丹麦B&K公司声学分析仪3160-A-0423160-107949丹麦B&K公司数字电流表20000964411KEITHLEY消声箱2.00m×1.40m×1.40m2009慈溪低频耦合腔AWA6153S+2008783杭州爱华精密衰减器LXY-PA-11148灵兴元声源LXY100-20K20191006灵兴元1.4实验用样机本次实验共使用了以下3台样机：台湾路昌公司生产的TR-SLT1A4型噪声变送器，编号：Q449748；杭州兆华生产的2110型噪声变送器，编号：201138；杭州兆华生产的2112型噪声变送器，编号：220534；2、实验数据本实验进行了以下三个项目的实验：序号项目名称技术要求的条号校准方法的条号1参考条件下的电流输出5.17.2.22频率响应5.27.2.33幅值级线性5.37.2.44线性工作范围5.47.2.55自生噪声5.57.2.6样机1台湾路昌公司生产的TR-SLT1A4型噪声变送器，编号：Q449748；1指示声级调整声校准器的型号4228；声压级124.0dB。噪声变送器在参考环境条件等效自由场声压级下的输出15.71mA。2频率响应(参考频率=250Hz)频率（Hz）参考声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）2053.510.770.12650.2631.564.611.920.1226-0.016377.813.480.1219-0.0612587.914.820.12310.0225095.415.710.1227/50080.814.010.12390.08100084.014.340.12310.02200085.214.540.12370.07400085.014.300.1212-0.11800082.914.280.12400.09频率响应(参考频率=1000Hz)频率（Hz）参考声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）2053.510.770.12650.2431.564.611.920.1226-0.036377.813.480.1219-0.0912587.914.820.12310.0025095.415.710.1227-0.0250080.814.010.12390.06100084.014.340.1231/200085.214.540.12370.04400085.014.300.1212-0.14800082.914.280.12400.063幅值级线性度频率（Hz）标准声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）25075.413.240.1225-0.0195.415.710.1227/125.419.310.1221-0.054自生噪声频率计权本机噪声/mA123平均值A7.737.817.887.81样机2杭州兆华生产的2110型噪声变送器，编号：201138；1指示声级调整声校准器的型号4231；声压级94.0dB。噪声变送器在参考环境条件等效自由场声压级下的输出13.85mA。2频率响应(参考频率=1000Hz)频率（Hz）参考声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）2053.628.3890.1291-0.2931.564.479.9320.1323-0.076377.7811.720.1327-0.0412587.8013.060.1329-0.0325095.3114.060.1329-0.0350080.6512.260.13540.13100084.3812.640.1334/200085.3212.840.13460.07400085.1312.840.13490.10800082.8012.490.13430.063幅值级线性频率（Hz）参考声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）100034.06.4730.17312.3044.07.3530.13760.3154.08.6060.13400.0764.09.9230.13350.0474.011.2390.13310.0284.012.580.13330.0394.013.900.13310.02104.015.210.1329/114.016.550.13300.01124.017.880.13300.01125.018.010.13300.01126.018.140.13290.00127.018.290.13300.01128.018.410.13300.01131.518.980.13390.07136.619.010.1283-0.304：线性工作范围：92.6dB5自生噪声频率计权本机噪声/mA123平均值A4.044.054.064.05样机3杭州兆华生产的2112型噪声变送器，编号：220534；1指示声级调整声校准器的型号4231；声压级94.0dB。噪声变送器在参考环境条件等效自由场声压级下的输出13.87mA。2频率响应(参考频率=1000Hz)频率（Hz）标准声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）2053.508.8920.13270.762559.159.4510.14510.3531.564.479.9810.13850.054069.4110.580.1338-0.035073.7111.120.1326-0.066377.7811.670.1320-0.058081.6012.190.1322-0.0310084.8412.630.1325-0.0212587.8013.030.1326-0.0216090.7313.420.1327-0.0120093.1413.750.1328-0.0125095.3114.030.1329-0.0131597.3414.310.13280.0040099.2114.550.1329-0.01500100.714.760.13280.00630102.014.940.13300.00800103.215.100.13300.011000104.015.200.1331/1250104.615.290.13300.011600105.015.340.13310.012000105.215.360.13310.002500105.215.370.13300.013150105.115.370.13310.024000104.915.340.13330.025000104.515.270.13320.006300103.815.140.1330-0.038000102.814.980.1326-0.0510000101.414.700.1322-0.121250099.6714.280.1311-0.291600097.2413.450.1287-0.752000094.6311.850.1220-2.073幅值线性度(线性工作范围)频率（Hz）标准声压级（dBA，参考20μPa）电流输出（mA）灵敏度（mA/dB）相对偏差（dB,参考）100044.07.3430.13800.3254.08.5850.13400.0664.09.9190.13380.0674.011.240.13350.0484.012.580.13360.0497.013.920.13360.04104.015.200.1330/114.016.570.13340.03124.017.960.13390.06125.018.100.13400.07126.018.240.13410.07127.018.380.1341