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\(A\) receives 24 points (8 votes in each of the three head-to-head elections) \(B\) receives 44 points (13 points in the competition against \(A\), plus 10 in the competition against \(C\) plus 21 in the competition against \(D\)) \(C\) receives 38 points (13 points in the competition against \(A\), plus 11 in the competition against \(B\) plus 14 in the competition against \(D\)) \(D\) receives 20 points (13 points in the competition against \(A\), plus 0 in the competition against \(B\) plus 7 in the competition against \(C\)) S
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山东颗粒过滤性测试仪
山东颗粒过滤性测试仪
1. 产品介绍
所示的PFE过滤效率测试仪EN版是一台通用型,根据标准GB2626-2019 EN149研制,主要用于检 测自吸过滤式防颗粒物呼吸器的过滤效率以及其材料的过滤效率和阻力。
测试仪分油雾和盐雾两类,油雾测试仪使用DEHS作为气溶胶,盐雾使用NaCl溶液经拉斯金喷嘴喷 雾再经干燥形成气溶胶。系统采用精密的仪表进行流量和气溶胶的浓度控制,并经系统集成与PLC 通信,操作简便并稳定性好。
测试分初始效率和加载效率两种模式,风量通过电气比例阀和流量计形成回路实时监控,保证测 试流量的精确和稳定,风量0-200L/MIN。气溶胶浓度由电气比例阀和差压计形成回路实时监控, 提供稳定的测试颗粒。
过滤效率测试仪是一台全自动的仪器,通过一台工控机控制以下运行:
所有工作参数自动反馈控制及读取:风量,阻力,效率。
在一次测量周期中,测量采样颗粒个数和样品阻力。
数据存储并打印数据
显示操作参数。
串行通讯,传输数据文件。
2. 安装和设置
3.1.开箱
为避免运输过程对仪器的损坏,仪器部分零部件分开包装,仪器安装人员将上门进行安装调试。
项目 | 名称 | 数量 |
1 | 测试仪 | 1 |
2 | 计算机和控制台 | 1 |
3 | 精密过滤器 | 1 |
4 | 尘埃粒子计数器校准证 书 | 1 |
5 | 说明书 | 1 |
3.2.安装
为了确保空气流通,仪器周围(7.5cm或更长距离)不能有其他仪器或墙壁。 安装包括以下步骤:
数据采集卡与232串口线连接
计数器电源线、数据线和采样管等连接
工控机安装并与串口线连接
填充NaC I溶液或DEHS
安装压缩空气罐和精密过滤器 连接气源和电源
完成以上步骤后,可以进行实验了。
3.2.1.数据采集卡与232串口线连接
为了避免运输过程对电子元件的损坏,分开包装。
打开主机箱外盖,拆开数据采集卡包装,进行接头的检查及串口接线。 安装后如图3-1
3.2.2. 计数器电源线、数据线和采样管等连接 打开主机柜外盖,在主机柜中间的档板上安放计数器,并接上电源线,数据线和采样管等
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