PLC controlMain features of pressure gauge calibration platform:

The boosting device is driven by compressed air, with a unique design, high pressure, and large flow rate;

The precision pressure control system adjusts the pressure of high-pressure liquid, and can be easily increased by gently adjusting the knob, which is simple and labor-saving. The calibration process is stable and accurate in terms of pressure rise and fall;

All pipelines and joints adopt highly reliable sealing methods to prevent leakage and dripping;

The pressure gauge quick manual joint technology is internationally leading, with a long service life and no leakage;

Can simultaneously calibrate two instruments to improve work efficiency;

Adopting a closed overall structure, the power station is integrated for easy maintenance in the later stage, and the stainless steel tabletop is clean and beautiful for practical operation;

It can provide pressure, voltage, current measurement and DC 24V output, making it convenient for users to calibrate pressure transmitters, digital pressure gauges or other pressure instruments.

According to the range of the pressure gauge being debugged, the system is equipped with multiple formulas, with one formula for each range. The corresponding formula can be selected based on the tested gauge. Install the standard gauge and the debugged pressure gauge on the PLC touch screen. The tested air source pressure is 6MPa, and then the PLC automatically adjusts the precision pressure reducing valve to adjust the outlet pressure to a larger calibration value of the debugging pressure. The PLC controlsPneumatic high-pressure needle valveOpen and close, set the pressure values of the three test points corresponding to the foot switch according to the range of the pressure gauge, and control the change of pressure values with the foot switch.

0-6MPaVerification tableThe corresponding pressure gauges can be set through PLC as 0-0.1, 0-0.16, 0-0.25, 0-0.4, and so on up to 0-6MPa. At the testing point, the accuracy of the pressure gauge is determined by comparing it manually with the standard gauge and recording it manually.

If you have higher pressure requirements, please consult our company. The higher pressure can reach 600MPa.

Key Features:

It is divided into two parts: continuous testing system and liquid testing system. The continuous testing system performs vacuum and low-pressure range calibration, while the liquid testing system performs high-pressure range calibration; 、

The vacuum testing section uses German Leybold vacuum pumps and vacuum gauges;

Low pressure testing process: The high-pressure gas is depressurized and used for testing;

● High pressure testing process: Low pressure compressed air is used as the driving gas source for the supercharger, and the supercharger produces high-pressure liquid for testing (if gas testing is required for high-pressure calibration, a specially customized high-pressure gas calibration system can be used);

● High voltageBoosting systemAdopting our company's unique designed turbocharger, with high pressure and large flow rate;

All valves of the overall equipment are imported high-performance products, such as SMC for vacuum valves and Festo, Asco, Tescom for proportional pressure reducing valves;

The control software is developed using Labveil from NI Corporation in the United States, which has the functions of dynamic display and automatic recording and saving of displayed test data. It can classify and query test data and print verification reports;

The computer in the control system adopts Advantech industrial control computer with stable performance, and the data acquisition part adopts NI high-speed data acquisition card from the United States. The verification process adopts imported high-performance vision system from abroad to ensure the accurate collection of verification data;

The entire verification process is unmanned and semi-automatic controlled (reverse calibration method).