Abstract : a portable digital instrument for multi - using ( multi - parameter ) is introduced . it includes the function of vacuometer , atmospheric pressure altimeter , thermometer ( environment ) and pressuremeter ( for example the standard pressuremeter of sphygmomanometer calibration ) 文摘:介绍一种便携、数字式的多用途仪器，它具有真空度计、气压高度计、 （周围环境）温度计以及压力计(例如可作为校准血压计的标准器)等功能。
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4 . the thrust measurement device was calibrated , and the accuracy was 2 % fs . at the same time the signal of thrust measurement was input to the computer . e - type chromel - constantan thermocouple was used to measure the temperature of mpt , and the accuracy was 5 % fs . the vacuum measurement was realized by using zdf - 5427m vacuometer , and the accuracy was 3 % fs ( 4 )对推力测量系统进行了标定并实现了计算机采集，推力测量系统最大相对误差为2 fs ；温度测量目前还只限于对mpt谐振腔壁温的测量，使用e型镍铬?康铜热电偶即可较容易实现，其测量精度为5 fs ；真空测量采用zdf - 5427m微机型复合真空计，其由热偶计和热阴极电离计复合而成，该真空计测量控制精度为3 fs 。
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