PTS Flowbench Forum

pierre wrote: it is right ?

I am searching the operator's manual for the SF 60, Unfortunately there are only those of the SF 110 and SF 120. Perhaps it is the schematic diagram represented in

Best regards.

In answer to your question the flowpath you show in the diagrams is correct. I have never seen a SF60 manual though.

I think that most likely the reason that the small Superflow benches were "blower center" designs is so that the user can have easy access to the orifice plate to make selecting different ranges very easy, simple and foolproof. Having to do correction due to the temperature change introduced by the blower motor is not any big deal. I really think that the design is possibly superior to the SF300 and SF600 designs which seem to suffer from non linearity due to turbulence inside of the cabinet and there are more chances of leaks with their rotating plate design.

Most of this of course is moot in today's world where digital pressure sensors reduce the need to have a lot of ranges to still have good accuracy.

Here are some pictures of what I built. I threw this together in a week end. I was doing it to see how well it would work. It is great! What a good design Bruce has. Mine is crude looking but it works so good. I am building a new 8 motor one that will be pretty also

John