Research and Development of Calibration Device on SF_6 Gas Density Monitoring Equipment

The calibration of SF6 gas density on-line monitoring device needs to simulate different pressure environment to calibrate the data accuracy of the on-line monitoring device. At present, the simulation of different pressure environment is conducted by artificial cranking bar to change the stroke of cylinder piston to realize the aim of change the gas pressure. Generally, technical personnel take calibration device to the field, select a suitable pressure, connect the checked device to test button and conduct the contrast calibration. Based on above operation, multi-group data of the checked on-line monitoring device can be obtained. While this method depends on artificial manual operation, squander time and vigour and can not set pressure value exactly. In order to make up for deficiency of existing problems, the paper presents a calibration device on SF_6 gas density monitoring equipment. The calibration device can make the calibration procession conducted automatically through controlling the pressure and its lasting time automatically. The use of the device can effectively complete calibration and improve the quality of work.Facts show that it can provide a powerful guarantee to grid equipment reliable operation.