I have updated the tags for visibility . What is the total flow on the inlet? Total flow settings less than 20ml/min can sometimes be problematic . The S/SL inlet is designed/supported with a 20ml/min total flow. When you add a sampler such as a purge and trap inline this can complicate settings as you are extending the flow path.
With a 1:1 split ratio, the total flow is 4.0 mL/m. After going to 50 psi pulse, the total flow is 21.1.
1 person found this helpful
The Pulsed injection will return the Total Flow back to 4ml/min after 10mins (in your case), this will cause the EPC to shutdown as it cannot achieve the correct pressure at such low total flow. As what James mentioned, it require about minimum 20ml/min of Total Flow for the EPC to be stable throughout, ie. even at standby mode. Even with 2:1 it may still be a problem too. Give it a 5:1 if really need to but would recommend 10:1 though.