PAGEPAGE10《紙張透氣度測定儀檢定規(guī)程》標準修訂項目實驗報告《紙張透氣度測定儀檢定規(guī)程》標準修訂項目的主要承擔單位為中國煙草標準化研究中心（以下簡稱標準化中心），項目的協(xié)作單位是國家煙草質(zhì)量監(jiān)督檢驗中心、中國科學院合肥物質(zhì)科學研究院、浙江、川渝、廣東、廣西中煙工業(yè)有限責任公司、紅塔煙草（集團）有限責任公司和廈門煙草工業(yè)有限責任公司。標準化中心和協(xié)作單位以及其它參與規(guī)程修訂工作的項目組成員一起對規(guī)程的操作可行性、規(guī)程中的檢定項目及檢定指標要求與相關標準的一致性進行了驗證，以期達到科學、權威、可行的目的。目前行業(yè)內(nèi)使用的紙張透氣度測定儀主要是由國內(nèi)外四家公司生產(chǎn)的，項目組根據(jù)需要選取了這四家儀器公司具有代表性的10臺紙張透氣度測定儀進行了實驗驗證。一、實驗目的新修訂的《紙張透氣度測定儀檢定規(guī)程》與1998版檢定規(guī)程相比，主要變化是：1、改變了紙張透氣度測定儀的測量壓力條件，增加了紙張透氣度測定儀壓力計的檢定方法；2、增加了紙張透氣度測定儀樣品夾持器密封性的計量性能要求及其檢定方法；3、增加了透氣度示值誤差的計量性能要求及其檢定方法；4、增加了透氣度測量值重復性的計量性能要求及其檢定方法。為驗證新的檢定方法，確定了實驗方案：1、驗證紙張透氣度測定儀壓力計的檢定方法；2、驗證紙張透氣度測定儀樣品夾持器密封性的檢定方法；3、驗證透氣度示值誤差的檢定方法；4、驗證透氣度測量值重復性的檢定方法。二、實驗方法1、對紙張透氣度測定儀的外觀和電氣性能進行檢查，確認紙張透氣度測定儀符合開機要求。2、打開紙張透氣度測定儀電源，根據(jù)操作手冊要求對紙張透氣度測定儀進行工作前準備并預熱后，按照手冊步驟對紙張透氣度測定儀進行校準。3、紙張透氣度測定儀壓力計的實驗將數(shù)字壓差計并連至紙張透氣度測定儀的壓力計處。然后密封樣品夾持器接合面，用數(shù)字壓差計對紙張透氣度測定儀的測量壓力重復測量10次。分別記錄每次測量的數(shù)字壓差計讀數(shù)和紙張透氣度測定儀的壓力計示值。每次測量都以數(shù)字壓差計讀數(shù)為標準值，計算出紙張透氣度測定儀的壓力計示值與標準值之間的差值。4、紙張透氣度測定儀樣品夾持器密封性的實驗將皂膜流量計串聯(lián)到紙張透氣度測定儀的樣品夾持器和測量單元之間，密封樣品夾持器接合面。在皂膜流量計中引入皂泡，將皂泡調(diào)節(jié)至適當位置，開始測定。重復測量5次，計算并記錄樣品夾持器的氣體泄漏量。5、透氣度示值誤差和透氣度測量值重復性的實驗選取高、中、低至少三個透氣度流量盤，且流量盤的量值應均勻分布。用紙張透氣度測定儀對每個透氣度流量盤重復測量10次。分別記錄每次測量的紙張透氣度測定儀的透氣度值。計算出每個透氣度流量盤10次測量值的平均值以及每個透氣度流量盤10次測量值的極差。以上實驗結(jié)果見表1-表10。三、實驗儀器根據(jù)需要選定的實驗用的測試儀器如下：1、皂膜流量計量程應不低于20ml，準確度等級為1.0級。2、數(shù)字壓差計壓差測量范圍應不低于2kPa，準確度等級為0.1級。3、透氣度流量盤流量值在（0～50）L/min范圍內(nèi)的高、中、低至少三個透氣度流量盤，且流量盤的量值應均勻分布，準確度等級為1.5級。四、實驗環(huán)境條件——溫度：（23±1）℃，相對濕度：（50±2）%RH，大氣壓力：（96±10）kPa。五、實驗數(shù)據(jù)1、紙張透氣度測定儀1的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.300.200.100.100.10壓力計（Pa）序號12345678910備注壓力計示值1005100410051005100510061005100510041005壓力標準值997996997997997997997997997997示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0750.075480.075740.075480.07570.075380.075520.075660.075460.075660.075660.075570.5640.56280.56280.56280.56340.56280.5630.56320.56280.56320.56360.56304.4214.524.5184.524.524.5164.5184.5124.5164.5144.5124.51719.5019.64819.61219.72419.719.63819.6119.63419.63419.65419.64419.6502、紙張透氣度測定儀2的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.100.080.100.100.10壓力計（Pa）序號12345678910備注壓力計示值998998997998998998998998998998壓力標準值991992991992992992992992991992示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0210.020380.020240.02030.02050.020160.020260.020160.020280.020160.020160.02030.5040.51080.5110.51120.50960.50860.50860.50860.50860.50860.50860.50940.6810.77140.7720.77120.77220.7720.7720.77280.77280.77260.7720.77214.5834.654.6524.654.654.6484.6464.6464.6484.6464.6484.648424.3724.16624.16624.15424.17624.1824.20824.19624.21224.20824.1924.1863、紙張透氣度測定儀3的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.120.110.120.230.29壓力計（Pa）序號12345678910備注壓力計示值1000999999999998998998998998998壓力標準值999999999998998998998998998998示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0210.021860.021460.021440.021640.021660.021680.021660.021540.020340.021640.02150.5040.50580.5060.50640.50660.50660.50680.50680.5070.50720.5070.50660.681///////////4.583///////////24.3723.9423.9223.9323.92623.90823.92223.92623.91423.9123.9323.9234、紙張透氣度測定儀4的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.100.050.050.100.10壓力計（Pa）序號12345678910備注壓力計示值9979979999989991000998997999999壓力標準值994994994993995996995993995996示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0750.074170.074240.074290.074110.074130.074270.074290.074420.074110.074350.074230.5640.56360.56350.56340.56360.56420.56290.56390.56360.56290.56330.56354.421///////////19.50///////////5、紙張透氣度測定儀5的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.200.050.150.150.20壓力計（Pa）序號12345678910備注壓力計示值9991001100299810011001999999998999壓力標準值995997997993996996994994993994示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0210.02080.02090.02090.0210.0210.021060.021060.021040.021280.021280.02100.5040.50980.50960.51020.51040.51040.51060.51060.5110.51120.5110.51050.6810.69040.69040.69020.69060.6910.69080.69120.69120.6910.69120.69084.5834.4784.4824.484.4824.4844.4864.4864.4884.494.4924.484824.3724.39224.3724.34824.34424.3424.31224.31424.31824.28424.3724.3396、紙張透氣度測定儀6的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.400.400.300.400.30壓力計（Pa）序號12345678910備注壓力計示值100210011001100210001000100110009991000壓力標準值1001100010001001999999999998998999示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0210.02140.02120.02180.0210.02080.02140.0210.02180.02120.02160.02130.5040.50760.50760.50780.50740.50780.50760.50720.5070.50760.50780.50750.6810.68620.6860.68580.68620.68580.68560.68540.68580.6860.68580.68594.5834.6484.6464.6444.6464.6424.6444.6464.644.6444.6424.644224.3724.4224.4124.3924.4424.4124.4624.4424.4224.4924.4524.43307、紙張透氣度測定儀7的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.200.300.500.400.40壓力計（Pa）序號12345678910備注壓力計示值1002100210021003100110021001100110001001壓力標準值10001000100010009999991000998998998示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0210.02060.02080.02080.0210.02080.02040.0210.02080.02060.02060.02070.5040.50360.50360.50380.50340.50380.50360.50320.5030.50360.50380.50350.6810.68420.6840.68480.68420.68480.68460.68440.68480.6840.68480.68454.5834.6184.6144.6144.6164.6184.6144.6164.614.6144.6124.614624.3724.3924.3824.3624.4124.4124.4224.4124.3924.4624.4424.40708、紙張透氣度測定儀8的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.100.050.100.100.15壓力計（Pa）序號12345678910備注壓力計示值1001100110011001100110011001100110011001壓力標準值1005100510051006100510051006100610051005示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.1430.1420.1420.1420.1420.1420.1420.1420.1420.1420.1420.1420.3660.36220.36200.36220.36220.36220.36220.36220.36200.36200.36220.36227.627.79527.79507.79427.79467.79267.79387.79727.79327.79127.79587.794322.95///////////9、紙張透氣度測定儀9的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏0.600.500.700.800.60壓力計（Pa）序號12345678910備注壓力計示值1004100310031003100210021003100210021003壓力標準值999998999998997996999998998999示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.5560.5610.560.5610.5620.5610.5630.5620.5610.5620.5610.56149.459.499.4939.4989.4969.5029.4989.5069.4969.4989.5029.497933.4633.56233.58433.57633.59433.60233.58833.59633.633.58433.59833.588410、紙張透氣度測定儀1的實驗數(shù)據(jù)樣品夾持器密封性（ml/min）序號12345備注氣體泄漏1.101.201.051.151.30壓力計（Pa）序號12345678910備注壓力計示值999998999998999100099910019991000壓力標準值1012101310131012101210141013101410131012示值誤差和測量值重復性（L/min）流量盤標準值12345678910平均值0.0870.0900.0900.0910.0900.0910.0900.0910.0900.0900.0910.09040.2680.2730.2750.2740.27