34A-5/8

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A 34A-5/8 is an air-to-open pressure switch, designed to activate when a predetermined air pressure is reached. It is typically used in ovens, dryers and other fixed glass assembly devices. The device works by using a brass bellows to sense the air pressure, which is connected to a metal lever. Once the air pressure exceeds the preset threshold an electrical switch is activated, turning off the device or signaling an alarm.

The 34A-5/8 is used in a variety of industries, including industrial, commercial and agricultural. It is often employed in HVAC systems, controlling the air pressure in air conditioning systems or fan motors. Air-to-open pressure switches can also be used in water pumps and pressure tanks, as an overpressure safety measure. Additionally, some industrial equipment rely on the device to detect an airflow and activate an alarm or shut off a machine if the pressure falls outside of the preset range.

The working principle of the 34A-5/8 is relatively simple. The brass bellows is connected to a steel lever arm, and when the pressure reaches a set point, the lever arm contacts the switch disk, closing the switch\'s electrical circuit. It is important to note that the contact gap and brass bellows must be configured correctly, as a misconfigured device can cause a false alarm and potential damage to both the bellows and the device it is connected to.

As the 34A-5/8 is considered a specialist device, it often requires a professional to change the configuration of the unit or replace the bellows. The cost of the replacement parts and labour will vary depending on the complexity of the application and the manufacturer.

In summary, the 34A-5/8 is an air-to-open switch designed to be used in a range of applications, such as HVAC systems, water pumps and pressure tanks. It uses a brass bellows to detect a preset pressure, and when the pressure exceeds the threshold, it closes the switch’s electrical circuit, turning off the device, issuing an alarm or signaling another response. The device requires professional installation and maintenance to ensure it is working correctly and safely.

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