Leapfrogging - Suggested Sequence for Maximum Throughput

Leapfrogging is a procedure for running low and high pressure systems simultaneously to maximize throughput. This process describes leapfrogging a group of eight samples. It is possible to leapfrog groups of samples continuously.

 

If samples require longer vacuum preparation or heated evacuation, increase the throughput by preparing samples in a vacuum oven.

  1. Prepare and weigh eight samples. Load eight penetrometers with samples then weigh them. Complete the Sample Data Worksheet and install samples 1 through 4 in the low pressure ports.
  2. Create sample files for at least the first four samples.
  3. Go to Unit [n] > Low pressure analysis to start the low pressure analysis.
  4. When the run is complete, remove samples 1 through 4 from the low pressure ports and weigh them. Install samples 5 through 8 in the low pressure ports.
  5. Start another low pressure run.
  6. Place samples 1 and 2 in the high pressure chambers.
  7. Go to Unit [n] > High pressure analysis to start the high pressure analysis.
  While waiting for analysis to complete, samples files can be created and other samples can be prepared for analysis.
  1. When the high pressure run is complete, remove samples 1 and 2 from the high pressure chambers and replace with samples 3 and 4.
  2. Start another high pressure run.
  3. Automatic reports specified in each sample file will print when that sample’s high pressure run ends.
  4. When the second low pressure run and the second high pressure run end, remove samples 3 and 4 from the high pressure chambers. Remove samples 5 through 8 from the low pressure ports and weigh them.
  5. Install samples 5 and 6 in the high pressure chambers. Start another high pressure run.
  6. When the third high pressure run is finished, install samples 7 and 8 in the high pressure chamber and start another high pressure run.
 
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