Continuous Flow Monitoring
During operation, pump-equipped devices monitor airflow and trigger a Pump Blocked notification if flow drops below the required level. Sampling is suspended until normal flow is restored.
- G7/G8: Continuously monitors flow rate and adjusts pump speed to maintain target flow. If flow drops below 150 mL/min, a Pump Blocked notification is triggered.
- EXO: Detects blocked flow during inlet operation. If airflow is interrupted or restricted, the affected inlet is disabled and triggers a Pump Blocked notification.
Common causes of reduced airflow include:
- Kinked, crushed, or obstructed tubing.
- Disconnected or improperly seated inlets.
- Dirty or clogged inlet filters.
- Cold temperatures below -20°C (-4°F).
Note:
Filter condition is not monitored. Clogged inlet filters may contribute to block conditions but are not called out explicitly in device behavior.
