The Weighing system of the material tank utilizes the pressure compensation link to perform function modification and correction on the weighing system. The random modification rate of the compensation coefficient is very high. Once the mechanical force on the material tank causes deformation, the pressure compensation coefficient must be modified at any time to meet the requirements of the material distribution process of the reaction vessel. Under the premise of ensuring that there is no mechanical structure influence on the periphery, the weighing of the material tank is mainly affected by the pressure at the top of the tank. Moreover, the force-bearing areas of the upper and lower tight valves of the weighing material tank are fixed. Dynamic correction of pressure compensation is carried out in real time through calculation. By taking advantage of the opportunities to add or reduce air during pressure testing and leak detection in the reaction vessel or planned maintenance, combined with the measurement principle of the static scale, During normal production, the force changes of the weighing material tank are measured, and a parameter record table is compiled. The data of the weight of the material tank changing with the variation of the gas pressure at the top of the tank is observed and recorded. Then, the real-time parameter curves of the top pressure and tank weight are drawn, and the compensation function formulas for the tank weight and top pressure are calculated. In this way, the dynamic correction of the pressure compensation coefficient of the weighing system of the material tank at the top of the tank can be achieved.

In order to quantify and balance the weight values of the material tanks (empty and full), a signal-based weighing system with a weighing module (weighing module total number junction box) must be used. It is an electronic product based on A microprocessor and a 24-bit ∑-Δ high-speed converter A/D, used for receiving and processing signals from Weighing modules. The signal-type additive weighing module compensated by this system maintains weight balance, calculates the total weight and reports the result to the control room. Meanwhile, the weighing system must be equipped with prevention of extreme values (peak suppressors) through a field communication network implemented in the RS-485 standard. The weighing system is based on weighing comparisons with other systems that operate on the same additive weighing module. The weighing system is equipped with an algorithm that can detect whether the expected balance effect has been achieved by running diagnostic tests. Diagnostic tests are based on tolerance Settings and compared with other weighing systems connected to additive weighing modules.

The dynamic weighing system with pressure compensation for material tank weighing determines the accuracy of weighing during normal production in the future. The parameters of top pressure and tank weight are shown in the same coordinate trend curve graph, and the corresponding change record table of tank top pressure, top pressure percentage, and tank weight is printed. It is prepared to record the change in tank weight corresponding to the top pressure within the range of 0 to 200kPa when pressurizing or adding or reducing air. At the same time, turn off the pressure compensation function of the material tank weighing instrument, set the zero point to the actual tare weight value of the material tank. The pressure compensation effectively eliminates the mechanical deformation influence of external factors on the material tank on the top of the tank, improves the accuracy of the tank top weighing system, can control the batching operation of the material tank time, achieve precise material distribution of the material tank, and lay a foundation for the stable smooth operation and efficient production of the material tank.