The pressure range of an explosion-proof pressurization cabinet is an important operating condition. Only within a specific pressure range can the explosion-proof pressurization cabinet function properly. Falling below or exceeding the pressure range will result in the loss of explosion-proof effectiveness.。

Pressure range of explosion-proof positive-pressure cabinets

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The normal working pressure range of the explosion-proof pressurization cabinet is 200Pa-300Pa.。

When the pressure value exceeds 100Pa, the sensor automatically detects the pressure inside the cabinet, and the pressurization control system begins to operate, closing the inlet solenoid valve and supplying air to the cabinet through the throttle valve.。

When the pressure value drops below 100Pa, the explosion-proof warning light will alarm, entering an under-pressure alarm state. Technical personnel are required to perform fault diagnosis and resolution. After promptly resolving the air inlet fault and the pressure rises back to 200Pa-300Pa, the explosion-proof pressurization cabinet can resume normal operation.。

When the pressure value drops below 50Pa, the pressurization control system will cut off the main power supply to prevent safety accidents. The explosion-proof audible and visual alarm will remain in the under-pressure alarm state, and fault diagnosis should be conducted as soon as possible. The above constitutes low-pressure protection.。

When the pressure exceeds 400Pa, the pressure relief valve releases pressure until the pressure drops below 300Pa, at which point the valve closes and the equipment operates normally. This constitutes high-pressure protection.。The pressure relief valve has been fully debugged before leaving the Zhengzhou Hualong factory. non-technical personnel are prohibited from adjusting the pressure relief valve to prevent high-pressure surges from impacting the cabinet.。