cems维护要求（CEMS maintenance requirements）.docVIP

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cems维护要求（CEMS maintenance requirements）.doc

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cems维护要求（CEMS maintenance requirements）

cems维护要求（CEMS maintenance requirements） Gaseous pollutants CEMS 1 no more than 15 days with zero gas and high concentration of standard gas calibration device or a calibration instrument zero and span, and check Response time, zero and span drift during this period and the response time should be consistent with the response time: less than 200s. Zero drift (24 hour zero drift does not exceed the full range of + 2.5%) range drift (24 hour span drift does not exceed the full range of + 2.5%. When the ratio (relative accuracy) method for the determination of SO2 and NOx concentration: the average value of A. is greater than or equal to 250 mol/mo (L SO2, NO and NO2 were 715 mg/m3, 335 mg/m3 and 513 mg/m3), the relative accuracy is less than 15%; B. less than 250 mol/mol (SO2, NO and NO2 were 715 mg/m3, 335 mg/m3 and 513 mg/m3), the absolute value of the reference method and the results of CEMS mean value difference should be not greater than 20 mol/mol (SO2, NO and NO2 were 57 mg/m3, 27 mg/m3 and 41 mg/m3); C. less than 50 mol/mol (SO2, NO and NO2 respectively. 143 mg/m3, 67 mg/m3 and 103 mg/m3), the absolute value of the reference method and the results of CEMS mean value difference should be not greater than 15 mol/mol (SO2, NO and NO2 were 43 mg/m3, 20 mg/m3 and 31 mg/m3). No more than 30 days); a linear error test, linear error should be consistent with the linear error: low, medium and high concentration of standard gas inspection, no more than + 5% to determine the relative error value and the reference value of CEMS. No more than 3 months; a relative accuracy test, relative accuracy requirements. 2 no more than 3 months to replace a sampling probe filter. 3 no more than 3 months to replace a purification of the dilution air dehumidification, dust and other materials. 4 must use the standard material in the period of validity. 5 must vent air compressor in the condensed water every day. 6 direct measurement of gaseous pollutants CEMS, and no more than 3 months o