What is the minimum amount of pressure needed to pass the BG4 field test?

The minimum amount of pressure needed to pass the BG4 field test is 200 bar. This pressure level is set to ensure that the BG4 breathing apparatus is functioning correctly and can provide adequate airflow and oxygen supply in emergency situations. The BG4 is designed for use in environments that might pose serious risks, such as mines where rescue operations may be necessary. Meeting this pressure standard is crucial to guarantee that the equipment performs effectively under extreme conditions, ensuring the safety of the users while they carry out life-saving tasks.

The specified higher pressures are indicative of the rigorous requirements for safety equipment used in potentially hazardous scenarios, highlighting the importance of reliable performance in critical situations.