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Editing time : 2020-03-19
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医用口罩合成血液穿透测试仪简介

医用口罩合成血液穿透测试仪用于合成血液等液源性液体喷射穿透性能的测定,以评估其安全防护性能。

适用标准:

  GB19083-2010:医用防护口罩技术要求;

  YY 0469-2011:医用外科口罩;

  YY/T0691-2008:传染性病原体防护装备医用面罩抗合成血穿透性试验方法(固定体积,水平喷射);

  ISO 22509:2004;F1862/F1862M-2013

  医用口罩合成血液穿透测试仪使用说明书包括操作程序和安全措施。在安装和使用仪器前请仔细阅读该说明书以确保使用的安全性和测试结果的精确性。本公司极力推荐用户阅读此操作手册,对于没有严格按照此使用说明来操作医用口罩合成血液穿透测试仪所造成的后果不承担任何责任。

  技术参数

  医用口罩合成血液穿透测试仪

  试验环境: 温度 (21±5)℃;相对湿度 (85±10)%

  喷射距离: (300±10)mm

  喷口直径: Φ0.84mm,长12.7mm

  液体喷射速度: 450cm/s;550 cm/s;635 cm/s

  电源: AC220V 50Hz

  主要用途

  适用于医用口罩防合成血喷溅穿透性能的测定。可供医药检验部门、安全检测部门和科研单位使用。

  原理

  医用面罩样品支撑在试验装置上,在300mm距离将2mL的合成血从内径0.84mm的套管中沿水平方向喷向被测口罩。模拟面罩被穿孔血管血液喷溅的场景,观察口罩另一面合成血液的穿透情况。

  分别以液体喷射速度:450cm/s550 cm/s635 cm/s所对应的液体喷射压力对医用面罩样品进行试验。记录各喷射速度的试验结果,给出医用面罩可接受质量水平限为4对应的zuigao血压。

  表格 1参考压力表压力与喷射时间的关系

  参考压力(kPa)喷出合成血液体积(mL)喷射2mL液体阀门开放时间(s)

  22.52 0.8

  30.520.66

  37.520.57

  试验步骤

  拉住仪器左上方试样夹的拉手,向左方拉下试样夹。将样品(标准中要求样品从预处理室取出60s内进行试验)固定在试样夹上,如果口罩有褶皱,将褶皱展开固定在试样夹上,以保证靶区为单层材料,以样品中心作为试验靶区。合上试样夹。

  按开始键,此时,一定量的合成血﹙表面张力﹙0.042±0.002N/m﹚沿水平方向喷向定位靶后方的被测口罩,同时时间定时器开始计时,到设定的喷射时间后,仪器自动停止喷射。

  10s后蜂鸣器响起,按停止按键,注意检查试样的观察面是否有合成血出现。

  一次试验结束。如果还需继续试验,重复步骤A-C直至做完全部试验。

  试验全部结束后,将试液箱中的合成血液残液清除干净,换入蒸馏水,清洗整个管路,当喷头喷出清水后,继续将试液罐内的清水全部排净。关闭空压机上出口阀,关闭电源开关。将残液盘洗刷干净,清理干净工作台面,将试液箱中的蒸馏水清除干净。

  定位靶试验

  首先,关闭空压机上的出口阀门,将空压机接通电源,待空压机达到预定压力后。切断空压机电源,关闭气源开关,打开出口阀门将仪器左侧的过滤减压阀阀头向上拔起,按照阀头指示,“+”方向为增压,“-”方向为减压调节,使过滤减压阀的压力表显示0.2MPa。安装上定位靶,使定位靶背面与口罩试样间距离为10mm,用定位靶底部导向板上的定位螺钉拧紧定位。

  将仪器左侧的气源开关旋到关闭(竖直为关闭),打开电源开关,按下上试液键,注意观察试液盒上方的回水管,回水管有试液流出,即刻按起上试液键。上试液完毕。

  用定位尺确定喷头到面罩的距离为(300±10)mm后,用螺钉将定位靶座固定。

  旋开仪器左侧气源开关(旋钮水平),调节仪器顶端的精密减压阀,按照阀头指示,“+”方向为增压,“-”方向为减压调节,参照表2调整压力表压力,将面板上的喷射时间定时器设定为1min或更长时间,按开始键,松开喷嘴定位螺钉,上下左右调整喷嘴,使喷射出的试液流对准定位靶板上的小孔中心呈直射状,旋紧定位螺钉,按停止键。

  对于密度为1.005g/mL的试验用液体,压力表压力与流速的关系见表格 2

  表格 2压力表压力与流速的关系

  参考压力(kPa)中靶速度(cm/s)喷射1s的质量

  最小(g)目标值(g)最大(g)

  39.54502.4562.5062.556

  49.55503.0023.0633.124

  596353.4663.5373.607


Founded in 1969 (Germany: Germany eager Technology Inc.) is an internationally renowned industrial company producing raw material testing and measuring instruments. Its production of wear tester, flame retardant, combustion tester, scratch tester, fatigue tester, textile color fastness, scratch, air permeability, abrasion, combustion, perspiration, physical properties, Water repellency, water resistance, leather and other test standards, including test instruments, experimental consumables, professional test standards, test methods manual and other test instruments are the most widely used instruments for durability test of products in the world. The name of German eager company is still the perfect combination of quality and reliability. Each product is marked with relevant international application standards, which can ensure that the products, pre-sales and after-sales services provided for you are the most efficient and high-quality, Chengwei Instrument Technology (Germany) Co., Ltd. is a German eager agent and branch company, which has established long-term strategic cooperation with many well-known instrument and equipment manufacturers in Europe and America. Mainly for domestic scientific research institutions, enterprises, quality inspection institutions to provide high cost-effective, high-quality testing equipment, To provide equipment and overall solutions for testing related laboratories, Chengwei Instrument Technology (Germany) Co., Ltd. in order to ensure the quality and reliability of products and pass strict tests before each product leaves the factory, our material testing industry standards are widely recognized by the industry. Chengwei Instrument Technology (Germany) Co., Ltd. is located in the international city of the east coast. It is a high-tech enterprise integrating scientific research, production and sales. It conforms to relevant international standards such as IEC, CCC, UL, CSA, VDE, JIS, KS, sev. BSI, HD, Kema, SSA and so on. Our development in recent years stems from our customers' trust in eager company. For a long time, the company has won unanimous praise from peers with its high-quality products and perfect services. At present, the customers include laboratories of quality supervision bureaus and inspection and quarantine bureaus of all provinces in China, and quality inspection departments of large and medium-sized enterprises. Our tenet: sincere service, sincere cooperation, common development and future creation.

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Contact us

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Contact person: manager Liu

Contact: 13310112765

Address: Shanghai

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