Air Differential Pressure Switch

Switch etc. for refrigeration system

     In the refrigeration system, some control accessories are often used to help protect the product and enhance the stability of the product system, such as: Refrigeration pressure switch, Thermostat switch, Pressure Gauge, Transmitter etc.

     An Air Differential Pressure Switch, also known as an Air Flow Switch or a Negative Pressure Switch, is a device commonly used in various applications where airflow or pressure regulation is essential. It is typically found in HVAC (Heating, Ventilation, and Air Conditioning) systems, exhaust fans, and other mechanical systems where maintaining a specific pressure difference is crucial.
    The primary function of an air differential pressure switch is to monitor the flow of air or the pressure difference between two points within a system. It has a built-in sensor that detects when the preset pressure threshold is exceeded. When the pressure drops below a certain level (negative differential pressure), or when it rises above a set point (positive differential pressure), the switch activates, triggering a control action such as turning on or off a fan, closing or opening dampers, or sending an alarm signal.
    These switches are usually adjustable, allowing users to fine-tune the pressure settings according to the specific requirements of their application. They may be either mechanical or electronic, with mechanical switches using a spring-loaded diaphragm or bellows to sense the pressure change, while electronic switches use a microprocessor to monitor and analyze the data.
    Overall, the air differential pressure switch plays a vital role in ensuring efficient and safe operation of various systems by maintaining the desired air flow and pressure conditions.

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