E drive boosters are installed in applications where they can run and move gas, not short start stop cycles like home blending would be. This is mostly, but not exclusively due to an industry rule of thumb of a maximum of 6 starts per hour. 6 starts per hour is a recipe for motor replacement and a motor won't stay happy like that for too long so most like to see 4 or less.
There is also the requirements that a typical home blender would have, inlets down to 100 psi. Outlets to 4500 psi. PLUS capacity control. Meeting all these requirements is not easy for anything electric, but is very simple for pneumatic drive.
Example application:
Fire truck has 9, 6K bottles on board with a panel and CFS. While SCBAs are being filled, the booster will shuffle the air from the lower banks to the higher banks as to maximize how many SCBAs can be filled.
In this application, the unit runs for a decent amount of time and works its way towards being maxed out, minimum Inlet pressure gets met and it shuts down.
When O2 is involved, heat becomes more of a consideration. Because an E drive booster, even with a VFD, already has a window of operation, the temp limit, tightens that window up and makes the unit less versatile. In reality, this doesn't apply to you, @tbone1004,because from what I can tell you have tons of blending stuff and you would use the right tool for the job, so you won't be regulating O2 to unreasonably low numbers to try and control the throughput on a device that probably shouldn't be used for that particular gas transfer. However, typically a home blender would want one booster, maybe two and the boosters that offer the greatest control and bandwidth are pneumaticlly driven types. E drive really shines when you have a decent amount of gas to move but home blending SCUBA cylinders doesn't have the throughput required to go electric.
