< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">B&nbs;型剩余电流断路器测试仪概述： < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">B型剩余电流断路器测试仪（以下简称测试仪）是为剩余电流断路器的性能测试而研制，它是检测B型剩余电流断路器脱扣电流和分断时间的关键仪器。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">测试仪的功能能够满足GB16916.1-2003、GB16917.1-2003和GB22974-2008标准对剩余电流断路器的测试要求。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">测试仪适用于电子式和电磁式的剩余电流断路器。
1P+N、2P、、+N、4P的断路器均能测试，输出大剩余电流为2A。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">测试仪的功能操作采用触摸屏，断路器动作后，脱扣电流和分断时间均能保持，便于读数和记录。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">系统显示和操作采用流行的工业级触摸屏，操作简单； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">辅助电源要求：三相四线输入380V，大于2A < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">接地方式：可靠接地 < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">2.2仪器输出电流范围和精度 < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;&nbs;测试仪输出的电流值为真有效值，测试不确定度小于1%； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;1）变频模式交流剩余电流范围：0~2A； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（2）50Hz交流剩余电流范围：0~2A； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（3）脉动直流剩余电流 < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">选项角为0°的脉动直流剩余电流，电流的范围为0~800mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">选项角为90°的直流剩余电流，电流的范围为0~400mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">选项角为135°的直流剩余电流，电流的范围为0~200mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（4）平滑直流剩余电流，剩余电流的范围为0~2A； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（5）叠加平滑直流的范围为5~100mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;（6）时间测试：在0~1000ms范围内，漏电测试仪测量的分断时间相对于计量值的偏差在±2ms。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;
利用迁移原理对液面测量方法进行改进从以上分析中可以了解到智能差压变送器测液面正、负迁移的原理，简单的来说，就是当h=0时，若变送器感受到的△=0，则不需要迁移；若变送器感受到的△＞0。则需要正迁移；若变送器感受到的△＜0。
则需要负迁移。
这样在实际应用中，就可以根据生产装置的工艺情况和仪表的使用条件及周围环境等灵活应用，对差压测量液面故障进行简单的处理并进行相应的改进。
正迁移故障判断正迁移的差压变送器在现场使用过程中测量是否准确，应打开三阀组平衡阀，关闭差压变送器三阀组的正、负压测量室，打开仪表放空堵头，此时仪表输出应≤4mA。
LoRa对距离的测量是基于信号的空中传输时间而非传统的RSSI，其精度可达5m(假设10km的范围)。
NB-IOT特点：广覆盖，将提供改进的室内覆盖，在同样的频段下，NB-IoT比现有的网络增益20dB，覆盖面积扩大100倍；具备支撑海量连接的能力，NB-IoT一个扇区能够支持10万个连接，支持低延时敏感度、超低的设备成本、低设备功耗和优化的网络架构；更低功耗，NB-IoT终端模块的待机时间可长达10年；(如果终端每天发送一次200Byte报文，5瓦时电池寿命可达12.8年)更低的模块成本，企业预期的单个接连模块5美元左右。
众所周知,博世电动在三月底推出了台热成像仪GTC,并公布了近十类常用应用。
近日，根据更多可用热成像仪解决问题的实际工况，引发了一场来自一线的热成像仪应用头脑风暴。
本文将介绍GTC热成像仪在电力、制造业等行业的五大应用：电力——用于高压电网线路的检测抢修、高压开关站测母排及电容柜的定期检测等。
制造业——用于线生产状态的检测和成品质量的检测。
图一：是用热成像仪观察玻璃容器线生产温度控制的情况图二：为利用热成像仪检测LED芯片生产成品包装前的温度状态安装——仅业的空调安装和检测行业，就有诸如冷媒泄漏、室内机、盘管、风机、室外机、冷水塔的工作状态可以用热成像仪来完成检测或协助维护。