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人体血液中的 PH 值、氧分压、二氧化碳分压以及由此而推算出来的剩余碱、碳酸氢根等一系列数值都随着温度的不同而变化。因此,为了准确地测量出血气值、所有血气分析仪都必须严格控制测量室内的温度。一般控制在37℃恒温下测量。瑞士 AVL—940型血气分析仪的测量室温度控制系统分为加热控制和温度监视。测量室内有两个相同的用于检测温度的热敏电阻(NTC)。一个将温度的变化转换成电信号变化,送给加
PH value of the human blood, partial pressure of oxygen, partial pressure of carbon dioxide and the resulting residual base, bicarbonate and a series of values vary with temperature. Therefore, in order to accurately measure the bleeding value, all blood gas analyzers must strictly control the temperature inside the measuring chamber. General control at 37 ℃ constant temperature measurement. Switzerland AVL-940 blood gas analyzer measuring chamber temperature control system is divided into heating control and temperature monitoring. There are two identical thermistors (NTCs) in the measurement chamber for temperature detection. A change in temperature will be converted into electrical signals, given plus