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Sewage Treatment Application

In sewage treatment plants, level and flow detection and control instruments are crucial for ensuring the efficient and safe operation of the treatment process. The following are some commonly used level and flow detection and control instruments:
Level Detection Instruments
Magnetic Level Gauge: The basic principle of the magnetic level gauge is to use a float and magnetic coupling to transmit level information.
Float Level Gauge: Measures water level height by the movement of a float that rises and falls with the liquid level, commonly used for monitoring levels in tanks and reservoirs.
Ultrasonic Level Gauge: Measures levels using ultrasonic wave reflection, suitable for monitoring levels in various water tanks, sedimentation tanks, and reaction tanks.
Radar Level Gauge: Uses radar wave reflection to measure levels, suitable for environments with strong corrosiveness and high temperatures.
Pressure Level Gauge: Determines liquid level height by measuring the pressure exerted by the liquid on the sensor, suitable for monitoring levels in underground pools and pipelines.

Flow Detection Instruments
Electromagnetic Flow Meter: Measures the flow of conductive liquids using electromagnetic induction, widely used in the flow measurement process in sewage treatment.
Ultrasonic Flow Meter: Measures flow by the change in the speed of ultrasound traveling through the fluid, suitable for large diameter pipes and open channels.
Turbine Flow Meter: Measures flow by the rotational speed of a turbine in the fluid flow, suitable for measuring the flow of clean water and low-contaminant sewage.
Differential Pressure Flow Meter: Calculates flow by measuring the pressure difference created as the fluid passes through a throttling device (such as an orifice plate or Venturi tube).
Float Flow Meter: Measures flow by the movement of a float in the fluid flow, suitable for small flow and low-pressure applications.
Control Instruments
Level Switch: Controls pump start and stop based on signals from the level sensor to maintain the set level range.
Flow Switch: Regulates fluid flow to maintain a stable flow output in the system.
Automatic Control System: Combines PLC (Programmable Logic Controller) and SCADA (Supervisory Control and Data Acquisition) systems to achieve automatic monitoring and control of the entire sewage treatment process.
These level and flow detection and control instruments play an important role in the operation of sewage treatment plants, ensuring the efficiency and safety of the treatment process.