Tell me about your project!
My company MFG South Dakota builds wind turbine blades currently the blades are 57.9 meters long (186 feet) the blades are build from several parts each made by a vacuum infusion process.
Vacuum pressure for our purposes is measured in Millibars (MB) during the part manufacturing process we need measure the vacuum under the infusion bag prior to infusing it with resin, this is done by a hand held digital vacuum gauge, the problem with using a gauge is once the infusion starts the gauge must be removed from the bag (crimping the vacuum line) or resin will get into the gauge and ruin it.
my goal is to be able to read atmospheric pressure under the infusion bag from start of infusion to completion of curing, this needs to accurate and repeatable.
I am currently using two arduino mega for a vacuum alarm system one arduino opens and closes a vacuum valve and sends the valve state to a network using java to record drop tests prior to infusing the part. The second arduino is reading the serial output from a Digivac 2l760 and controls a series of relays which go to warning lights to signify changes in vacuum level, the Digivac sensor is on the manifold for the mold and as such the vacuum level it reads is not the same as what is under the infusion bag (very long lag time), this is where I hope your sensors will work for me, I am proposing using 10 – 20 SingleTact sensors on a mold in order to read the pressure from one end of the mold to the other this will assist in location leaks and other useful info.
Another goal is use the arduino as a web server to show a graphic of the part in the mold and display the pressure readings at various point around the mold.
Can you comment on the outcome? Was the SingleTact sensor a good choice?
it sounds wery good