Where path management occurs in the instrument
Use a state table to connect field sampling, pretreatment, analysis and waste removal. Provide cleaning and maintenance bypasses to prevent wrong samples or wash liquid reaching detection, and record current data-validity status.
Specify destinations for old samples, wash liquid and maintenance drainage. Record renewal time at each restoration stage so an unrenewed signal is not labeled as a new sample.
Product responsibilities in this operation
Valves control the current source or destination; the associated drive performs metering or transfer. Port connections, actual positioning and shared-segment renewal must match the operation.
For online monitoring integration, define task state, sample or container identity, concurrent resources, interlocks and restart, including sample-refresh confirmation and measurement-validity checks.
Organize the sequence by actual architecture
- Use a state table to connect field sampling, pretreatment, analytical interfaces and waste removal. Define sources and destinations during normal measurement, washing and maintenance bypass.
- Relate valve positions and on/off states to pump actions, analysis-permission conditions and vessel states. Check isolation and interlocks during switching.
- During recovery, confirm actual sample renewal and method checks before releasing valid measurement. Retain data-status records for maintenance and the first recovery cycle.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Task state, sample or vessel identity, concurrent resources, interlocks and restart |
| Acceptance target | Test concurrent operation, limiting states and complete fault recovery; verify that identities, cumulative quantities and records match actual actions |
| Fault localization | Resource conflicts, communication loss or mismatched identities can cause delivery to the wrong destination or repeated dosing. |
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| MRV3 multiport rotary valve | Multiple-source selection | Compare 10-, 16- and 24-port options and port diagrams; verify high-pressure suitability separately |
| SV10 solenoid valve | On/off control or branch selection | Check normal state, differential pressure, flow direction and duty cycle; high-pressure tasks require a separately suitable configuration |
Validate operation results at the receiver
Cover concurrency, boundary states and complete recovery after faults. Check that identity, cumulative volume and records match actual operations.
Cover extended operation, maintenance, power loss, empty sources and blockage recovery, including data flags.
Locate abnormalities and restore the next operation
Resource conflicts, communication interruptions or identity mismatches can cause misdelivery or duplicate dispensing.
Stop the affected branches and recover using execution records.
Validate field service life and maintenance intervals under actual conditions; motor life or free-flow ratings alone are insufficient.