🔸 1. High Pressure Alarm
- Monitors: The high-pressure side — typically the air cylinder pressure (e.g., 200–300 bar or ~3000–4500 psi).
- Purpose: Alerts the user when the cylinder pressure drops to a critical level (usually around 50–25% of full capacity).
- Common Alarm Point: Around 55 bar (800 psi) — this means the cylinder is nearly empty.
- Type: Often an audible alarm (whistle, bell, or electronic tone).
- Importance: Warns the user that they are running out of air and must evacuate or switch cylinders soon.
🔸 2. Medium Pressure Alarm
- Monitors: The medium-pressure side — air after it’s regulated down from the high-pressure cylinder (e.g., ~6–10 bar or ~85–145 psi), typically on the way to the demand valve or second stage.
- Purpose: Alerts the user to malfunctions in the medium-pressure system (e.g., a hose rupture, regulator failure, or pressure drop due to a leak).
- Alarm Type: May include a visible gauge drop, electronic diagnostics, or alarms on advanced SCBA with telemetry.
- Importance: Indicates a possible equipment failure, which could lead to air supply disruption even if the cylinder still contains air.
If you have any questions, please feel free to contact us!
windy@muskwell.com
