Which company is better for gas scada system? What does the natural gas scada system include?

Monitoring object: The conventional monitoring method of gas pressure regulating box is to monitor the inlet pressure and outlet pressure of the pressure regulating box in real time. Other monitoring objects include gas leakage, valve status, access control status, etc.

Power mode:

A. Uninterrupted power supply mode: Since there is no stable 220V commercial power in the on-site voltage regulating station, solar energy can be used to supply power to PLC, RTU and transmitter involved in Scada acquisition terminal.

B battery power supply mode: with the development of low-power technology, the instrument can also use lithium battery power supply mode to meet the requirements of SCADA system. The basic principle is that the RTU equipment of SCADA system adopts integrated design, integrating pressure transmitter, temperature transmitter, concentration transmitter, switch transmitter, data storage unit and GPRS transmission module into a control unit, which is composed of low-power single chip microcomputer, high-efficiency power supply module and CMOS field effect transistor switch circuit. The pow consumption of that whole system in idle time can be controlled.

C, battery power alarm real-time solution:

? If the pressure in the pressure regulating box is abnormal and the pipeline pressure exceeds the set alarm upper limit, upper limit, lower limit and lower limit, RTU will immediately open the communication GPRS module, start the wireless data connection and report the data to the server. After receiving the alarm information, the server sends an alarm prompt to the client, mobile phone, mobile phone short message, etc.

U disk downloads historical data:

In addition to GPRS communication mode, you can also use U disk download mode. The RTU of U disk download mode can ensure the influence of external factors such as communication network failure (weak GPRS network signal) and server IP change.

Hilog4 of Hengtaishi Instruments integrates USB flash drive download and GPRS remote transmission.

At present, this passive power supply mode has matured. Beijing Hengtaishi Hilog4 series passive pressure recorder has been widely used in Beijing Gas, Tangshan Gas and Chengde Gas.