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1、光干涉甲烷测定器校验方法一、环境条件检查，查看检定环境的温度和湿度是否符合要求。二、查看被检仪器的型号名称、出厂编号填表。三、仪器的外观与通电检查外观完好、结构完整、附件齐全、连接可靠、外露的工作部件均能正常工作。干涉条纹明亮清晰，没有影响读取示值的弯曲和倾斜。条纹在全量程范围内移动时，没有急跳现象，并无色的变化。转动测微手轮，干涉条纹的移动量与测微手轮的刻度相对应。四、气密性能检查将被测仪器的抽出嘴用堵头堵死，进气嘴与压力计胶管相连，确认补偿微压计在关闭状态，打开液体压力计，用压力调压计对测定器甲烷室气路系统施加7KPa（714mmH2O）压力，保持10min。读取后5min的压力下降值，不
2、超过10Pa判定为合格。五、示值误差检定1、首先用清洁空气吹洗气路，时间不少于30s。2、将仪器对好零位，并用橡胶堵头把仪器出气嘴堵上,再用胶管将仪器进气嘴与带有气压源的液体压力计相连接。3、查表得出各检定点需要加压的水柱高度并记录。4、打开补偿微压计阀门，完成1%CH4，3%CH4检定点的检定。关闭补偿微压计阀门，用水柱压力计完成6%CH4，9%CH4检定点的检定。由低到高依次检定，每点检定三次，取三次算术平均值为测量值，用该测量值减去标准值的差作为该点基本误差。2 / 7光干涉甲烷测定器校验原始记录型号名称出厂编号环境温度（）相对湿度（）外观与通电检查气密性能检查示值误差检定标准值压力值（
3、mmH2O）被检仪器示值（CH4）平均值（CH4）基本误差（CH4）1231.003.006.009.00校验人： 校验结果： 校验日期：附表： 环境温度、检定点、水柱高度（mm）对照表1%3%6%9%1%3%6%9%1551.98155.86311.71467.571652.14156.33312.66469.0015.152.00155.90311.81467.7116.152.16156.39312.78469.1715.252.02155.95311.90467.8516.252.18156.45312.89469.3415.352.03156.00312.00468.0016.352
4、.20156.50313.01469.5115.452.05156.05312.09468.1416.452.22156.56313.12469.6815.552.06156.09312.19468.2816.552.24156.62313.24469.8515.652.08156.14312.28468.4316.652.26156.67313.35470.0215.752.09156.19312.38468.5716.752.28156.73313.46470.2015.852.11156.24312.47468.7116.852.30156.79313.58470.3715.952.13
5、156.28312.57468.8516.952.31156.85313.99470.541752.33156.90313.81470.711852.52.157.47314.95472.4217.152.35156.96313.92470.8818.152.54157.53315.06472.5917.252.37157.02314.03471.0518.252.56157.59315.18472.7617.352.39157.07314.15471.2218.352.58157.65315.29472.9417.452.41157.13314.26471.3918.452.60157.70
6、315.40473.1117.552.43157.19314.38471.5718.552.62157.76315.52473.2817.652.45157.25314.49471.7418.652.64157.81315.63473.4517.752.47157.30314.61471.9118.752.66157.87315.74473.6217.852.49157.36314.72472.0818.852.68157.93315.86473.7917.952.51157.42314.83472.2518.952.70157.99315.98473.961952.71158.04316.0
7、9474.132052.90158.60317.2475.8019.152.73158.10316.20474.3020.152.92158.66317.33475.9919.252.75158.16316.31474.4720.252.94158.73317.45476.1819.352.77158.21316.42474.6320.352.96158.79317.58476.3719.452.79158.27316.53474.8020.452.98158.85317.71476.5619552.81158.32316.64474.9720.553.01158.92317.83476.75
8、19.652.83158.38316.76475.1320.653.03158.98317.96476.9419.752.84158.43316.87475.3020.753.05159.04318.09477.1319.852.86158.49316.98475.4720.853.07159.11318.22477.3219.952.88158.54317.09475.6320.953.09159.17318.34477.512153.11159.23318.47477.702253.27159.71319.42479.4321.153.13159.28318.56477.8522.153.
9、29159.77319.55479.3221.253.14159.33318.66477.9922.253.31159.84319.67479.5121.353.16159.38318.75478.1322.353.33159.90319.80479.7021.453.18159.42318.85478.2722.453.35159.96319.93479.8921.553.19159.47318.94478.4222.553.38160.03320.05480.0821.653.21159.52319.04478.5622.653.40160.09320.18480.2721.753.221
10、59.57319.13478.7022.753.42160.15320.31480.4621.853.24159.62319.23478.8522.853.44160.22320.44480.6521.953.25159.66319.33478.9922.953.46160.28320.56480.842353.48160.34320.69481.032453.69160.98321.96482.9423.153.50160.41320.82481.2224.153.71161.03322.05483.0823.253.52160.47320.94481.4124.253.73161.0732
11、2.15483.2223.353.55160.53321.07481.6024.353.74161.12322.24483.3723.453.57160.60321.20481.8024.453.76161.17322.34483.5123.553.59160.66321.32481.9924.553.77161.21322.43483.6523.653.61160.73321.45482.1824.653.79161.26322.53483.7923.753.63160.79321.58482.3724.753.80161.31322.62483.9423.853.65160.85321.7
12、0482.5624.853.82161.36322.72484.0823.953.67160.92321.83482.7524.953.84161.41322.81484.222553.85161.45322.19484.362654.06162.08324.18486.2725.153.87161.52323.04484.5526.154.08162.15324.31486.4625.253.89161.58323.16484.7526.254.11162.22324.43486.6525.353.92161.65323.29484.9426.354.13162.28324.56486.84
13、25.453.94161.71323.42485.1326.454.15162.34324.69487.0325.553.96161.77323.54485.3226.554.17162.41324.81487.2225.653.98161.84323.67485.5126.654.19162.47324.94487.4125.754.00161.89323.80485.7026.754.21162.53325.07487.6025.854.02161.96323.92485.8726.854.23162.60325.19487.8025.954.04162.03324.05486.0826.
14、954.25162.66325.32487.982754.28162.72325.45488.172854.43163.20326.40489.6027.154.29162.77325.54488.3128.154.46163.26326.53489.7927.254.31162.82325.64488.4628.254.48163.33326.65489.9827.354.32162.87325.73488.6028.354.50163.39326.78490.1727.454.34162.91325.83488.7428.454.52163.45327.91490.3627.554.351
15、62.96325.92488.8828.554.54163.52327.03490.5527.654.37163.01326.02489.0328.654.56163.58327.16490.7427.754.39163.06326.11489.1728.754.58163.64327.29490.9327.854.40163.10326.21489.3128.854.60163.71327.41491.1227.954.42163.15326.30489.4628.954.62163.77327.54491.312954.65163.83327.67491.503054.86164.4732
16、8.94493.4029.154.67163.90327.80491.6930.154.88164.53329.06493.5929.254.69163.96327.92491.8930.254.90164.60329.19493.7929.354.71164.02328.05492.0730.354.92164.66329.324939829.454.73164.09328.18492.2630.454.94164.72329.44494.1729.554.75164.15328.30492.4530.554.96164.79329.57494.3629.654.77164.21328.43
17、492.6430.654.98164.85329.70494.5529.754.49164.28328.56492.8330.755.01164.91329.82494.7429.854.81164.34328.68493.0230.855.03164.98329.95494.9329.954.84164.40328.81493.2130.955.05165.04330.08495.123155.07165.10330.21495.313255.23165.58331.16496.7431.155.08165.15330.33495.4532.155.25165.64331.28496.933
18、3.255.48166.34332.68499.0234.255.69166.97333.95500.9233.355.50166.40332.81499.2134.355.71167.04334.08501.1133.455.52166.47332.93499.40343455.74167.10334.20501.3033.555.55166.53333.06499.5934.555.76167.16334.33501.4933.655.57166.59333.19499.7834.655.78167.23334.46501.6833.755.59166.66333.31499.9734.755.80167.29334.58501.8733.855.61166.72333.44500.1634.855.82167.35334.71502.0633.955.63166.78333.57500.3534.955.84167.42334.84502.25