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一、问题的提出分析仪器在使用过程中需要校准,才能保持仪器原有的精度。RD-04型氢分析器的测量下限为50％H_2,(即仪器的“零”点),上限为80％H_2。按目前常用的校准仪器的方法,须配制少量的50％H_2,即“零”点气样,通入仪器,调整好“零”点,再通入配制好的大气样(70—80％H_2)或经正确分析的流程气来校准刻度。仪器能否达到出厂时的精度,往往取决于“零”点是否调整得正确。一般使用单位,特别是小化肥厂,缺乏配气用的专用设备和气体,
First, the question put forward Analytical instruments need calibration during use, in order to maintain the original accuracy of the instrument. The RD-04 Hydrogen Analyzer has a lower limit of measurement of 50% H 2 (ie, the “zero” point of the instrument) with an upper limit of 80% H 2. According to the commonly used methods for calibrating instruments, a small amount of 50% H 2, ie “zero” gas sample, shall be prepared and introduced into the instrument to adjust the “zero” point. ) Or a properly analyzed process gas to calibrate the scale. Instrument can reach the factory accuracy, often depends on the “zero” point is adjusted correctly. General use of units, especially small fertilizer plants, the lack of gas with special equipment and gas,