RO/DI Pressure gauge

I noticed in another thread the talk of pressure for funcinality of the unit. I have had a pressure gauge that has been sitting here brand new for months and figure its time to install it. Where on the system does it go? I thought after the filters but before membrane is this correct? I dont remember where they told me to install it I got it from bulk reef supply and they said something about you dont want it before everything???? I did not want to hijack the other thread with tis question. Thanks.

 

I just checked mine, I have a 5 stage from bulk reef supply. The pressure gauge is installed inbetween the filters and the membrane. It came on the unit from them, its just tee'd off and actually mounted onto the piece of metal that holds the filters.
Hope this helps
Jake

 

Install it after the carbon block and before the RO membrane. What you are measuring is pressure availablke to the membrane and evidence of plugging or fouling filters due to sediment and particulates.