Figure 9-25 The threshold-pressure alarm's limit (dotted line) has been set appropriately (top). An alarm is actuated when a partial disconnection occurs (arrow) because the threshold-pressure alarm's limit is not exceeded by the breathing-circuit pressure. A partial disconnection (arrow) is unrecognized by the pressure monitor because the threshold-pressure alarm's limit has been set too low (bottom). (Adapted from Baromed Breathing Pressure Monitor. Operator's Instruction Manual. Telford, PA, North American Dräger, August 1986.)