Place the component in the complete analytical fluid path
Sources and pumpsDefined valve stateLoop or common pathDetector, vessel or bypassWaste and wash state
Draw the liquid path for prime, normal operation, wash, idle and recovery. Mark which liquid contacts each part and where volume, concentration, pressure or detector response will be accepted.
Select by operating duty rather than a family name
| Configuration | Best starting duty | Boundary to confirm |
|---|---|---|
| MRV3 multiport rotary valve | Select one of multiple low-pressure sources or destinations | Channel count, bore, internal volume and purge |
| HP high-pressure valve | Sample-loop injection and pressure-zone switching | Maximum working pressure, loop geometry and fittings |
| 6010 solenoid valve | Fast shutoff, diversion or isolation | Normal state, media, pressure and energization pattern |
Continue with the application task that matches the liquid movement
Each task guide uses a concrete liquid path, calculation, abnormal-condition table and receiving-position acceptance plan. Choose by what the instrument must accomplish, not by a broad market label.
Provide the inputs that change the configuration
| Input | Provide | Why it changes the design |
|---|---|---|
| State table | Every port connection during prime, run, wash, idle and fault | Prevents hidden cross-connections |
| Pressure envelope | Pressure on each port before, during and after switching | Separates low-pressure selection from high-pressure injection |
| Volume and carryover | Bore, common path, loop and purge budget | Controls delay, contamination and peak dispersion |
FOREACH can use these inputs to match the product configuration, wetted materials, interfaces and control arrangement. The instrument developer remains responsible for method limits, safety logic and qualification of the complete analyzer.
Verify the result after priming, idle time and a realistic fault
- Record the installed configuration and actual liquid, not only the component model.
- Measure steady operation and the first cycle after priming, planned idle and liquid replacement.
- Challenge the relevant abnormal condition: air entry, restriction, low level, blocked outlet or incomplete wash.
- Accept the result at the receiving vessel, detector or cleaned surface; retain the component-level signal for diagnosis.