What do these products do in this instrument?
Bubble and pressure sensing: low-liquid monitoring and dose-event records
Provide bubble or pressure signals at defined supply locations. The controller preserves destination and confirmed delivery status. After a low-liquid interruption, distinguish no delivery, partial delivery and completed delivery before resuming.
ABD provides bubble or liquid-state signals for defined tubing; PDM5 provides pressure information at a defined location. Configure module, position and action window separately; the controller associates affected samples or tasks.
Match sensing locations to specific fluidic problems
Bubble modules report bubble or liquid state in defined tube segments; pressure modules report pressure at defined positions. Before selecting mounting points, define the phase and abnormality to observe: aspiration, delivery, source depletion or branch-load changes. Associate sensor positions with affected samples, cuvettes or stations.
Connect signals, action windows and recovery conditions
The same signal may mean different things at different valve positions or operating phases. Record normal ranges and faults with actual liquids, tubing and sequences. The controller combines action timing, confirmed delivery status, volume records and sample identity to pause, review or recover; one pressure change cannot directly identify a blockage location or specific cause. Distinguish measured, estimated and unknown volumes; completion of a command does not prove actual liquid delivery.
Translate actual branch conditions into configuration requirements
| Condition | To confirm |
|---|---|
| Installation conditions | Specify tubing dimensions, liquid, sensing location and branch to observe. |
| Timing and baseline | Record valve positions, pump actions, normal changes and fault-detection windows. |
| Abnormality handling | Associate affected containers with confirmed delivery status and volume records; define conditions for review, continuation or re-execution. Distinguish measured, estimated and unknown volumes; completion of a command does not prove actual liquid delivery. |
| Operation | Specific operating conditions |
|---|---|
| Supply monitoring | Specific sensor configuration, location, liquid/tubing, sampling rate, threshold and time window |
Supply monitoring
Investigate empty sources, bubbles and backpressure changes while recording the current dose and replenishment state. Check the first dose and received volume after restart; normal sensor signals do not replace volume measurement.
When an empty-source or bubble signal occurs, the platform should associate its timing with potentially affected containers and recorded delivery stages. Check the first dose after restoring the path before releasing the next batch. A normal sensor reading does not establish acceptable delivery.
Measure fault detection, false alarms and end-to-end response separately; cover baseline changes with liquid, speed and operating conditions
Normal air segments, viscosity changes and sampling delays may be misclassified. The controller determines task validity; sensors alone do not prove dose or assay results.
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| ABD bubble-detection module | Bubble or liquid-state identification in defined tubing | Validate detection and false alarms for tubing material, dimensions, medium and action window |
| PDM5 pressure-detection module | Pressure-state monitoring at a defined fluidic location | Confirm range and wetted configuration by model; validate normal baseline and abnormalities separately |
Confirm product roles in actual operation
| Operation | Measurements and observations | Priority checks |
|---|---|---|
| Supply monitoring | Measure fault detection, false alarms and end-to-end response separately; cover baseline changes with liquid, speed and operating conditions | Normal air segments, viscosity changes and sampling delays may be misclassified |
Include first, middle and last batch doses, recovery after bottle changes, and extended operation with the actual medium.
Can dispensing be repeated immediately after bubbles or abnormal pressure are detected?
First establish whether partial delivery has occurred and which container is affected. Immediate repetition may double-dose it. Act on the actual state and recheck the first cycle after recovery.
Repeated dosing and continuous supply are different modes. Valveless metering also requires validation with the actual medium and operating conditions.