The system consists of vacuum pump, resistance vacuum gauge,electronic thermometer, three-way valve, connection leather pipe, and etc.
Experimental objective
☆To learn correct operation of electronic scale, barometer, thermometer, and hygrometer;
☆To measure density of air.
☆Analysis and correction of systematic error.
Main technical parameters
☆Vacuum pump: pumping speed: 1L/sec., ultimate vacuum: 6x10^-2Pa.
☆Resistance vacuum gauge: digital pumping vacuum degree, display unit: Pa.
☆Measuring range: 1.0x10⁵Pa~1.0x10^-1Pa;
☆Effective control range: 5.0x10⁵Pa~5.0x10^-1Pa, measurement accuracy: 0.5Pa.