Where condensate discharge occurs in the instrument
Determine whether the inlet carries continuous liquid or an air/foam mixture. Configure for acidity, temperature, discharge cycle and system vacuum, checking drainage-induced air leakage and backflow.
Drainage under vacuum involves sealing and sample-gas bypass leakage as well as liquid flow. Confirm the configuration for temperature, acidity, drainage interval and inlet gas content.
Product responsibilities in this operation
The drain pump removes collected condensate while the sample-gas path remains in its intended pressure state. Establish whether the inlet remains liquid-filled or intermittently draws gas, then choose the compatible pumping arrangement and receiver.
DPGL800 handles gas or gas–liquid aspiration permitted by its specific configuration. Check inlet gas content, foam, peak inflow and container vacuum; use a separately suitable solution for continuous liquid-only transfer.
For a separate liquid-filled condensate-transfer branch, compare DPL30, DPL60 and DPL30H against the actual liquid, suction condition and outlet load. Confirm that this arrangement maintains a permitted inlet state and does not open an unintended air path into the sample gas.
For condensate discharge, confirm liquid or gas-liquid inlet state, peak inflow, allowable accumulation, lift and waste vessel.
Organize the sequence by actual architecture
- Identify the main sample-gas path, condensate collection location and separate drain branch. Determine whether the inlet contains continuous liquid, intermittent gas or foam.
- Select a configuration that permits the inlet condition at the actual condensate formulation, temperature, vacuum and drainage interval. Define drainage and isolation sequence.
- Drain under actual sample-gas operating conditions. Check accumulation, bypass leakage, backflow and effects on sample-gas flow and pressure.
- After maintenance, recheck gas tightness and method-specified target composition. Do not route condensate in series through the sample-gas analytical interface.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Liquid or gas-liquid inlet conditions, peak incoming flow, allowable accumulation, lift and waste container |
| Acceptance target | Test condensate removal at the actual temperature, formulation, system vacuum and inlet gas content. Check peak accumulation, full-vessel or blockage handling, bypass leakage and backflow while the sample-gas path operates. |
| Fault localization | Blocked drainage or foam can accumulate condensate; a leaking drain can admit air under vacuum or disturb sample-gas flow. Restoring liquid discharge alone may leave the measured gas composition affected. |
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| DPGL800 gas–liquid diaphragm pump | Suitable gas–liquid aspiration or container-vacuum branches | Confirm inlet medium and waste architecture; not for continuous liquid-only transfer (100% liquid) |
| DPL30 liquid diaphragm pump | Liquid supply or auxiliary circulation | Select by installed resistance, actual wash or working fluid and task window |
| DPL60 liquid diaphragm pump | Liquid supply or auxiliary circulation | Judge by peak demand and installed operating point, not free flow alone |
| DPL30H high-backpressure liquid diaphragm pump | Liquid branches requiring higher backpressure capability | Calculate pressure budget and actual flow first, then confirm interfaces and materials |
Validate operation results at the receiver
Test condensate removal at the actual temperature, formulation, system vacuum and inlet gas content. Check peak accumulation, full-vessel or blockage handling, bypass leakage and backflow while the sample-gas path operates.
After drainage or maintenance, verify gas tightness and the effect on sample-gas flow, pressure and method-specified target composition. Evaluate the collection and drain branch separately from the gas-analysis interface.
Locate abnormalities and restore the next operation
Blocked drainage or foam can accumulate condensate; a leaking drain can admit air under vacuum or disturb sample-gas flow. Restoring liquid discharge alone may leave the measured gas composition affected.
Place the affected sampling branch in its defined maintenance state and isolate the drain as required. Clear the fault and verify drainage, gas tightness and sample-gas renewal before accepting measurements from the restored path.
Liquid flow, unloaded gas flow and gas-liquid drainage capability are not interchangeable. An absorbent-liquid pump is not necessarily suitable as a sample-gas pump.
References
View references (4)
- [1]FOREACH DPGL800 gas–liquid diaphragm pump: configurations and specifications
- [2]FOREACH DPL30 liquid diaphragm pump: configurations and specifications
- [3]FOREACH DPL60 liquid diaphragm pump: configurations and specifications
- [4]FOREACH DPL30H high-backpressure liquid diaphragm pump: configurations and specifications