The gross weight of a fully charged CO2 bottle in a fixed CO2 system is 220 lbs. When the bottle is empty it weighs 120 lbs. What is the minimum acceptable gross weight of the CO2 bottle before it should be recharged by the manufacturer?
• How to calculate the net weight of CO2 in the bottle from the given gross and empty weights • Typical inspection criteria: bottles are often recharged if the loss is more than a certain percentage of original CO2 charge • Difference between gross weight (bottle + CO2) and tare weight (empty bottle only)
• First, find how many pounds of CO2 are in the bottle when it is full. How do you calculate that? • If a maintenance rule says a bottle must be recharged when it has lost more than a certain percentage of its CO2, how would you apply that to the original CO2 charge? • Once you know the minimum acceptable CO2 weight, how do you convert that back into a gross weight to compare with the answer choices?
• Confirm you are using CO2 weight = full gross weight − empty bottle weight • Be sure you are applying the percentage to the CO2 charge only, not to the full gross weight • After finding the minimum acceptable CO2 charge, add back the empty bottle weight to get the minimum acceptable gross weight
No comments yet
Be the first to share your thoughts!