具有探头零点校准、两点校准功能， 可对系统误差进行自动修正；
A probe of zero calibration, a two-point calibration function, the system error of automatic correction;
系统可以进行自动零点校准和偏位法补偿，对测试IC提出了新的改进方法。
The function of zero connection and deviation compensationcan be realized in the system. An improved method for measuring iC is presented.
介绍了质量流量计的工作原理，分析了误差产生的原因，指出了影响流量计准确度的各种因素，同时给出了零点校准的方法。
Principle of mass flowmeter is intro-duced. Causes for error is analyzed. Factors that have impacts on accuracy of flowmeters and calibration measures are presented.
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