Pump the chamber down as far as practically possible, close the vacuum valve and measure the pressure rise over a period of time. Typically a rate of rise or leak rate is measured in a one (1) hour time period. If for example the pressure rises from 50 microns to 100 microns in one hour the rate oRead more
Pump the chamber down as far as practically possible, close the vacuum valve and measure the pressure rise over a period of time. Typically a rate of rise or leak rate is measured in a one (1) hour time period. If for example the pressure rises from 50 microns to 100 microns in one hour the rate of rise is 50 microns per hour. In other words you could say the leak rate is 50 microns per hour.
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If I understand the question, I believe the answer is they are the same. In the vacuum furnace industry, when we say "leak rate", we typically are measuring pressure as it rises to provide an indication of the in leakage of gasses into the vessel or furnace. This rise in pressure is called the "raRead more
If I understand the question, I believe the answer is they are the same. In the vacuum furnace industry, when we say “leak rate”, we typically are measuring pressure as it rises to provide an indication of the in leakage of gasses into the vessel or furnace. This rise in pressure is called the “rate of rise” when referenced over a period of time.
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