一、紫外線燈管強度要求多高
按(an)照(zhao)(zhao)《消毒技術規范》規定的要(yao)求,高強(qiang)(qiang)度(du)(du)紫(zi)(zi)(zi)外線(xian)新(xin)燈的輻(fu)(fu)照(zhao)(zhao)強(qiang)(qiang)度(du)(du)應大(da)于180uW/cm2(253.7nm,距離1m處),普(pu)通紫(zi)(zi)(zi)外線(xian)燈管輻(fu)(fu)射(she)強(qiang)(qiang)度(du)(du)大(da)于90uW/cm2為合格。正(zheng)在(zai)使(shi)(shi)用(yong)中的燈管輻(fu)(fu)射(she)強(qiang)(qiang)度(du)(du)最低應達到70uW/cm2暫(zan)可使(shi)(shi)用(yong),但必須延(yan)長(chang)照(zhao)(zhao)射(she)時(shi)間(jian)。若紫(zi)(zi)(zi)外線(xian)光源的強(qiang)(qiang)度(du)(du)低于40uW/cm2,則再延(yan)長(chang)照(zhao)(zhao)射(she)時(shi)間(jian)也不能起(qi)到滿意的殺菌作用(yong),即應停止使(shi)(shi)用(yong)并更(geng)換新(xin)燈管。
因(yin)此,不要認為紫外(wai)線(xian)燈管只要亮(liang)著就還(huan)有殺菌作(zuo)用,每隔一段時(shi)間(jian)就應該對紫外(wai)線(xian)燈管強度進行檢測(ce)。
二、uv紫外線燈管強度監測多久一次
紫外線(xian)燈管強度監(jian)(jian)(jian)測(ce)時(shi)(shi)間應查看紫外線(xian)需要監(jian)(jian)(jian)測(ce)的時(shi)(shi)間,按時(shi)(shi)進行監(jian)(jian)(jian)測(ce):
1、使(shi)用中(zhong)的大于90uW/cm2?的半年監測(ce)一次。
2、大于70uW/cm2小于90uW/cm2?一季度監測(ce)一次。
3、累計使用1000小時換(huan)無論(lun)是否監測合格(ge)均換(huan)新管。
4、換(huan)新管時需監測合格后方可使(shi)用。
三、怎樣做紫外線燈管強度監測
uv燈(deng)管強(qiang)(qiang)(qiang)度(du)監(jian)測方法是用專門的儀(yi)器(qi)或試紙進行監(jian)測,用于測試紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)輻射(she)(she)強(qiang)(qiang)(qiang)度(du)的紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)強(qiang)(qiang)(qiang)度(du)儀(yi)也叫紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)輻照(zhao)(zhao)計或紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)指示(shi)卡(ka)。紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)強(qiang)(qiang)(qiang)度(du)指示(shi)卡(ka)由卡(ka)片(pian)紙、紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)感(gan)(gan)光(guang)色(se)(se)(se)塊(kuai)(kuai)和(he)標(biao)準色(se)(se)(se)組成。中央為(wei)紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)感(gan)(gan)光(guang)色(se)(se)(se)塊(kuai)(kuai),兩端分別(bie)印上輻射(she)(she)照(zhao)(zhao)度(du)為(wei)90μW/cm2和(he)70μW/cm2的標(biao)準色(se)(se)(se)塊(kuai)(kuai),當紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)感(gan)(gan)光(guang)色(se)(se)(se)塊(kuai)(kuai)受到(dao)紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)照(zhao)(zhao)射(she)(she)后,隨紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)輻射(she)(she)強(qiang)(qiang)(qiang)度(du)的強(qiang)(qiang)(qiang)弱,產(chan)生深淺(qian)程(cheng)度(du)不同的紫(zi)(zi)(zi)紅色(se)(se)(se),與標(biao)準色(se)(se)(se)塊(kuai)(kuai)比(bi)較可(ke)監(jian)測紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)燈(deng)253.7nm波(bo)段(duan)紫(zi)(zi)(zi)外(wai)(wai)線(xian)(xian)的輻射(she)(she)強(qiang)(qiang)(qiang)度(du)。
測定時(shi),打開紫(zi)外(wai)(wai)線(xian)(xian)燈管(guan)5min,待其穩(wen)定后,將指示卡(ka)置于(yu)距紫(zi)外(wai)(wai)線(xian)(xian)燈管(guan)下(xia)方垂直(zhi)1m中央(yang)處,將有圖案一面朝向(xiang)燈管(guan),照射1min。紫(zi)外(wai)(wai)線(xian)(xian)燈照射后,圖案中的紫(zi)外(wai)(wai)線(xian)(xian)感光色(se)塊由乳白色(se)變成深淺程(cheng)度不同的紫(zi)紅色(se)。將其與標準(zhun)色(se)塊相比,即可(ke)測知紫(zi)外(wai)(wai)線(xian)(xian)燈輻(fu)照強度是否達到使用(yong)要求。
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