The advantages of intelligent instrument mainly include:

 For the instrument manufacturing process ——, simplify the adjustment process, compensate the sensor defects (such as linearization, environmental factor compensation, etc.), improve the instrument performance, reduce the manufacturing cost, and can form a multi-parameter composite instrument.

 Instrument installation and debugging process —— Simplify the installation and debugging process (such as alignment, zero), reduce the installation and debugging cost.

 The instrument operation process —— improve the measurement quality, conducive to soft measurement, easy to maintain the instrument calibration and asset management (need the support of system and equipment management software).

 What are the selection principles of the pressure / differential pressure transmitter?

 The main basis for the selection of pressure / differential pressure transmitter is: according to the properties of the measured medium, to save money, easy installation and maintenance as a reference. If the measured medium is of high viscosity and easy to crystallization and strong corrosion, the isolated transmitter must be selected.

 In the selection, we should consider the medium corrosion of the membrane box metal, we must choose the membrane box material, the membrane box material of the transmitter has ordinary stainless steel, 304 stainless steel, 316L stainless steel, tantalum membrane box material, etc.

 In the selection, the temperature of the measured medium should be considered. If the temperature is generally 200℃ ~400℃, the high temperature type should be selected, otherwise the silicone oil will produce vaporization expansion, so that the measurement is not accurate.

 The working pressure level of the equipment should be considered in the selection, and the pressure level of the transmitter must be consistent with the application situation. From the selection of transmitter measurement range, the general transmitter has a certain range adjustable range, it is best to use the range range in its range of 1 / 4~3 / 4 section, so that the accuracy will be guaranteed, for the differential pressure transmitter is more important. In practice, some applications (liquid level measurement) require the measurement range migration of the transmitter. The measurement range and the migration amount are calculated according to the field installation position, and the migration is divided into positive migration and negative migration.