Automatic Portable Pressure Calibrator

The pressure verification meter is the essential measurement equipment in the industrial production process and applies massively in each kind of production. In order to guarantee that the pressure measuring appliance is accurate, reliable, we must carry on the regular examination to the pressure measuring appliance. The examination efficiency of traditional manual examination method is very low, need of much labor intensity, and its examination precision can be easily influenced by human factor. This paper has systematically summarized the historical development and the present situation of pressure verification meter both domestic and foreign. In view of the special need of pressure measuring appliance's scene verification in oil field, this paper proposed the conception of develops in one kind to be able to complete the verification process automatically which called the incorporate pressure verification meter. Several major technique key questions which need to be solved to this pressure verification meter have been researched, the prime task and the achievement manifest in the following several aspects: 1) In view of the massive application of pressure verification meter of both indicator type and the transmitting instrument type, This Paper has researched automatic interpret system of the indicator's value of the pressure measuring appliance. 2)This paper has proposed control method of certain steps on base of having done the research of installment of making standard pressure automatically as well as it's control method. 3) This paper has conducted the deep research to the normal pressure sensor performance compensation, carried on good compensation to temperature and the misalignment characteristic of pressure sensor with the method of piecewise linearity compensating so that increased it's instruction precision to the pressure verification meter.