The high-pressure sensor model DW-AS-503-PC on the main oil cylinder of the CIFA concrete pump truck (factory code: K1001210) serves the following functions:

1. Pressure Monitoring:
   It measures the hydraulic pressure inside the main oil cylinder to ensure the system operates within safe and optimal pressure ranges.
2. System Protection:
   By detecting high-pressure levels, the sensor helps prevent potential damage to the hydraulic system caused by overpressure or malfunctions.
3. Data Transmission:
   The sensor transmits real-time pressure data to the control system, which allows for precise control of the pumping process.
4. Performance Optimization:
   The pressure data is used by the control system to optimize the performance of the concrete pump truck, ensuring efficient and consistent pumping.
5. Safety Assurance:
   It plays a critical role in maintaining the safety of the equipment and the operator by triggering alarms or system shutdowns when abnormal pressure levels are detected.