How does the ventilation process operate in automatic mode of our ex-proof pressurized container?

When the container is in automatic mode, the system will display different detection states for different detection conditions.

• When alarm for Gas low concentration（≥10%LEL: < 15%LEL) and H2S low concentration （≥8pprn: < 20ppm) and H2 low concentration（≥10%LEL; <15%LEL) and O2 low concentration(≤19%), the corresponding indicator light of "gas/H2S/H2 low concentration alarm indication" and "O2 leak alarm indication" is on; Explosion-proof sound and light will alarm; the fan will keep running and the air change timing is suspended

        When the alarm is removed, the ventilation will continue automatically.

• When alarm for low differential pressure(<50Pa), Sound and light alarm will be sent out after 10s delay, and the indicator light of ”pressure loss alarm" will be on; If the differential pressure is restored within 60s, the ” pressure loss alarm” indicator light will be off, the alarm will be relieved and the ventilation process will continue; After 60 seconds, the fan power supply will be cut off,  the ventilation process will stop, sound and light alarm, unable to enter the ”safe power supply” state.

• When alarm for Gas (≥15%LEL: <60%LEL) / H2S（ ≥20ppm）/ H2 (≥ 15%LEL) high concentration , and fire alarm (smoke detector、heat detector、MCP) and local ESD signal will be received, the power supply of the fan will be cut off, and the ventilation process will stop.

TLS is an international supplier that can customize onshore | offshore special containerised solutions,Any requirements, please contact us directly:
E-mail: [email protected]
Hotline: +65-65637288; +65-31386967

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