Hello Thanks for the reply. I switch only EVM #2 and #3, And I calibrate and test EVM with battery. e2e.ti.com/.../test-result-3.xlsx Despite calibration & testing EVM #2, #3 at the same time, EVM #2 (with pipe #3) test results were not good. There seems to be a problem with the #3 pipe or the position, so I will change the pipe or change the position in next test. But I have a question. Before I test iteration #1 10L/h VFR, EVM #2 (with pipe #3) Delta ToF was around -200 and 1L/h VFR, even thought zero flow rate. And it effected the iteration #1 test result. So I reconnected battery and 5pin(laptop), Delta ToF changed to around -50 and 0 VFR. As the Delta ToF and test results seems strange, Delta ToF offset might be changed during calibration. And when I remove VCC jumpers to use EVM with battery, I didn't remove GND jumper because EVM can't connect to USS GUI without it. Please check if I did anything wrong. And always, thank you for your help. Kim.
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