8, after the transmitter overtime work required to maintain stability: Most transmitter after overtime work will have a "floating", so it is necessary to know before buying the stability of the transmitter, which can work in advance reduce future use of all kinds of troubles occur. 9, Package transmitter: the transmitter package, in particular is often easy to overlook its frame, but this is in the future use will gradually expose their shortcomings. The purchase of conveyor transfer must take into account the future of the transmitter working environment, absolute pressure transmitters Humidity how smart, how to install the transmitter absolute pressure transmitter, will have a strong impact or vibration. 10, between the transmitter and the other electronic equipment using what connection: the need to adopt a short-range connection, if the use of long-distance connection, the need to use a connector. Smart Pressure Transmitter Calibration using conventional methods described above for smart transmitter calibration is not enough, because it is the principle of HART transmitter structure decision. Because smart transmitter between 4-20mA current signal input pressure source and produce, in addition to mechanical, circuit, there are micro-processing chip computing tasks input data so that adjustments differ with the conventional method. In fact, manufacturers of smart transmitter calibration is also described as ABB transmitters, calibration there: "Setting Range" and "re quantitative process", "fine-tuning" of the points. The "set range" operating mainly through the LRV, URV is set to complete the configuration of the digital work, but "the quantitative process' operator requires the transmitter is connected to a standard vacuum absolute pressure transmitter pressure source through a Series instruction guide, direct induction by the transmitter and the actual pressure value can be set. The initial range ultimately set depends directly on the real pressure input value. But to see that in spite of the transmitter's analog output and input values ??used relationship is correct, but the numerical value display digital readout process will be slightly different, which can be calibrated by spinner vacuum absolute pressure transmitters, absolute pressure transmitters, Hua Hui science and technology provided by the Jinan-Technology Co., Ltd. Jinan Huahui Technology Co., Ltd. (www.cnhuahui.com/) strong, credible, in Jinan, Shandong pressure instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and continuously improve innovative ideas will lead China - Technology and you hand in hand into the brilliant, for a better future!