I hope your all well and enjoying the holidays at foot.

I work with closed molded Carbon Fiber utilizing vacuum assist resin transfer and would like to improve from using the more reliable absolute pressure gauge instead of analog.

I'll say up front that I cannot currently afford a new/retail system such as a new Heise digital.....but I do find them in my budget on auction sites on occasion and have considered them instead of say the cheaper handheld Vacuum digitals. Those seem to range in the $200-300.00 zones. The Heise can be had with tranducer and cables for $1000.00 or less used.

My question is when researching which perameters are out there I become confused on what will work best for what I do?

I require to go as deep as -29.9" hg and I'm lucky to be at sea level. My pump is a Leybold D16a with kw2555 fittings. I see controllers, transducers,digital gauges in seperate auctions and I don't want to get the wrong componets.

Ayone here have experiance with this type of system? Your advice is very much appreciated.